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Advances in Materials and Technologies for Gas Sensing from Environmental and Food Monitoring to Breath Analysis

ADVANCED SUSTAINABLE SYSTEMS (2023)

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Article Chemistry, Multidisciplinary

Rationally Designed Dual-Mesoporous Transition Metal Oxides/Noble Metal Nanocomposites for Fabrication of Gas Sensors in Real-Time Detection of 3-Hydroxy-2-Butanone Biomarker

Junhao Ma et al.

Summary: A polymer-mediated co-assembly method was proposed for the construction of highly connected mesoporous structures and the simultaneous loading of noble metal nanoparticles in TMOs/NM nanocomposites. The materials showed high sensitivity and selectivity in gas sensing performance, with the sensors integrated into a wireless module connected to smartphones for real-time detection of specific biomarkers.

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Corroles at work: a small macrocycle for great applications

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Summary: Corrole chemistry has experienced significant progress in the last 20 years, thanks to the easy synthesis of corrole derivatives. The study of corroles has revealed their unique characteristics compared to porphyrins, leading to an exploration of their potential in various application fields.

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Molecularly imprinted nanocomposites of CsPbBr3 nanocrystals: an approach towards fast and selective gas sensing of explosive taggants

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Summary: A solid-state luminescent gas sensor based on a nanocomposite of CsPbBr3 nanocrystals embedded in a molecularly imprinted polymer has been synthesized, demonstrating excellent sensing capabilities and specificity towards nitro-containing molecules. Molecular imprinting successfully generates specific recognition sites, enabling fast detection of nitrotoluene with a limit of detection as low as 0.218 mu g mL(-1).

JOURNAL OF MATERIALS CHEMISTRY C (2022)

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Article Chemistry, Analytical

Ultrafast NH3 gas sensor based on phthalocyanine-optimized non-covalent hybrid of carbon nanotubes with pyrrole

Shijie Gai et al.

Summary: By tightly combining TfmpoPcCo on the surface of MCNT@PPy, a MCNT@PPy/TfmpoPcCo hybrid with a uniform 3D network was constructed, and an excellent NH3 sensor with ultrafast response/recovery time and low detection limit was achieved. The sensor exhibits outstanding gas selectivity and stability.

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Article Chemistry, Analytical

A selective methane gas sensor based on metal oxide semiconductor equipped with an on-chip microfilter

Ruijie Wu et al.

Summary: Gas sensors based on metal oxide semiconductor are cost-effective and reliable for methane leakage detection, but they have cross sensitivity to volatile organic compounds. This study presents a novel on-chip microfilter that enhances the selective and sensitive response to methane and can be used for different oxide-based sensors.

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Highly sensitive and selective H2S sensors with ultra-low power consumption based on flexible printed carbon-nanotube-thin-film-transistors

Yue Geng et al.

Summary: Flexible printed carbon-nanotube thin-film transistors (CNT-TFTs) were fabricated using a printing process for gas detection. The sensors exhibited low power consumption, high sensitivity, signal amplification, and mechanical flexibility, making them promising for H2S gas detection.

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The Evolution of Molecular Recognition: From Antibodies to Molecularly Imprinted Polymers (MIPs) as Artificial Counterpart

Ortensia Ilaria Parisi et al.

Summary: Molecular recognition is a useful property shared by various molecules, allowing them to play important roles in biological and pharmaceutical research, diagnostics, theranostics, therapy, and drug delivery. While antibodies have been widely used, their high production cost and time limitations have led to research on alternative molecules such as MIPs. However, further investigations are needed to address the lack of toxicity studies and limited practical applications of MIPs.

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Highly Reliable Organic Field-Effect Transistors with Molecular Additives for a High-Performance Printed Gas Sensor

Eun-Sol Shin et al.

Summary: The stability of OSC-based gas sensors can be greatly improved by adding molecular additives, allowing for reliable and reversible gas detection in air for multiple uses.

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Conductive Hydrogel- and Organohydrogel-Based Stretchable Sensors

Zixuan Wu et al.

Summary: Conductive hydrogels have shown great potential for stretchable electronics, with improved stability, unique properties, and outstanding performance in sensors. However, there is still a lack of systematic summary on their working principles, properties, and applications.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Biophysics

Highly sensitive and chemically stable NH3 sensors based on an organic acid-sensitized cross-linked hydrogel for exhaled breath analysis

Lichao Liu et al.

Summary: The incorporation of organic acids into crosslinked hydrogels enhances the detection performance of NH3 in high humidity environments, resulting in sensors with excellent selectivity and stability towards NH3 under high humidity conditions.

BIOSENSORS & BIOELECTRONICS (2021)

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Article Biochemistry & Molecular Biology

pH-responsive color indicator films based on methylcellulose/chitosan nanofiber and barberry anthocyanins for real-time monitoring of meat freshness

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Article Engineering, Environmental

Novel green phosphorene as a superior chemical gas sensing material

T. Kaewmaraya et al.

Summary: Green phosphorus and its monolayer variant, GreenP, are new members of 2D phosphorus polymorphs with high stability, tunable bandgap, excellent electronic transport, and anisotropic properties. Gas-sensing characteristics show stronger adsorption of NO, NO2, CO, and CO2 on GreenP, while NH3 and H2O are weakly physisorbed. Sulfur doping can enhance NO2 adsorption, leading to increased sensitivity in sensing devices.

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Article Chemistry, Analytical

PANI nanofibers-supported Nb2CTx nanosheets-enabled selective NH3 detection driven by TENG at room temperature

Si Wang et al.

Summary: A selective NH3 sensor based on Nb2CTx nanosheets driven by a TENG for enhanced sensing response has been proposed. Gas sensing properties can be optimized by regulating the spray volume of Nb2CTx nanosheets. Results show that the gas sensing response of Nb2CTx/PANI-2 sensor has been significantly improved, even under high humidity conditions.

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Article Chemistry, Analytical

A miniaturized electronic nose with artificial neural network for anti-interference detection of mixed indoor hazardous gases

Junyu Zhang et al.

Summary: The study developed a miniaturized electronic nose for semi-quantitative, simultaneous, and anti-interference detection of CO and CH4, using different models for evaluation, with BP-ANN model showing the best performance.

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Article Chemistry, Analytical

Hole-supply-rate-controlled methanol-gas-sensing reaction over p-type Co3O4/single-walled carbon nanotube hybrid structures

Nguyen Duc Chinh et al.

Summary: Co3O4/single-walled carbon nanotube (Co3O4/SWCNT) hybrid structures were fabricated and showed promising methanol sensing properties. The best sensing performance was observed for the material fabricated by deposition for 15 min and oxidized at 500 degrees C. The hybrid sensor structures also exhibited a low detection limit, good selectivity, repeatability, and long-term stability, indicating their potential for practical applications in methanol sensing.

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A novel low-cost gas sensor for CO2 detection using polymer-coated fiber Bragg grating

Zhenze Zhou et al.

Summary: A new PES-coated FBG sensor is reported for CO2 detection, which exhibits volume dilation in CO2 exposure to transfer stress to the grating, causing changes of the period and the refractive index. The sensor shows good selectivity to CO2 with a minimum response time of 3.27 min.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Physical

Atomic-level mediation in structural interparameter tradeoff of zinc oxide nanowires-based gas sensors: ZnO nanofilm/ZnO nanowire homojunction array

In Su Jeon et al.

Summary: The study successfully manipulated the surface area and density of oxygen vacancies of ZnO nanowires using atomic layer deposition, leading to improved gas sensor response values and detection limits. The surface area was found to be critical for enhancing gas response up to 50 ALD cycles, while the density of oxygen vacancies was more crucial for gas sensing performance with increasing ALD cycles (>50 cycles).

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Physical

In-situ growth of Co3O4 nanoparticles based on electrospray for an acetone gas sensor

Xiangxiang Fan et al.

Summary: In this study, Co3O4 nanoparticles were prepared by the electrospray method and used to fabricate an acetone gas sensor. The nanoparticles showed excellent sensitivity to acetone and were able to detect sub-ppm levels of acetone at an optimum working temperature of 200 degrees Celsius.

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Gas-sensing selectivity of n-ZnO/p-Co3O4 sensors for homogeneous reducing gas

Shuai Nie et al.

Summary: This study prepared a series of n-ZnO/p-xCo(3)O(4) NPs and found that the Zn:Co molar ratio influenced the gas-sensing selectivity. The results indicated that n-ZnO/p-0.61Co(3)O(4) NPs, formed with a p-n heterojunction, hold promise in addressing the issue of poor selectivity in MOS-based gas sensors.

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS (2021)

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Article Chemistry, Analytical

Room temperature highly toxic NO2 gas sensors based on rootstock/scion nanowires of SnO2/ZnO, ZnO/SnO2, SnO2/SnO2 and, ZnO/ZnO

Vo Thanh Duoc et al.

Summary: The grafted structures between SnO2 and ZnO nanowires were achieved through a two-step growth process, showing promising sensitivity for NO2 gas sensing.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Sensitive H2 gas sensors based on SnO2 nanowires

Sihang Lu et al.

Summary: Highly sensitive H-2 gas sensors based on porous network of SnO2 nanowires were demonstrated in this study, with improved performance and shortened response/recovery time after Pd doping. The superb sensitivity of the sensor was credited to the ultrathin SnO2 nanowires network structure and the catalytic activity of Pd.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Humidity-resistant gas sensors based on SnO2 nanowires coated with a porous alumina nanomembrane by molecular layer deposition

Syreina Sayegh et al.

Summary: A novel approach for enhancing the humidity resistance of SnO2 nanowire-based gas sensors by coating them with a humidity-resistant nanomembrane using Molecular Layer Deposition (MLD) is described in this work. The sensor exhibited remarkable gas response in increasing relative humidity conditions and showed stability and good recovery times in humid environments. This study highlights the benefits and practical applications of MLD-prepared nanomaterials for gas sensors and paves the way for complex 3D designs and various applications requiring gas or ion selectivity in humid atmospheres.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Effect of mixing ratio on NO2 gas sensor response with SnO2-decorated carbon nanotube channels fabricated by one-step dielectrophoretic assembly

Masafumi Inaba et al.

Summary: The study fabricated CNT/SnO2 heterojunction gas sensors using one-step dielectrophoretic assembly and investigated the effect of CNT/SnO2 ratio on gas detection properties. The results showed that the UV-irradiated CNT/SnO2 heterojunction gas sensor had a high response to 1 ppm NO2 in artificial air.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Well-connected ZnO nanoparticle network fabricated by in-situ annealing of ZIF-8 for enhanced sensitivity in gas sensing application

Yong Xia et al.

Summary: Low-power microheater platforms show great potential in reducing power consumption during gas sensing processes. By in-situ annealing a porous metal organic framework (MOF), ZIF-8, using a miniature heater electrode with a fast ramp rate, a well-connected nanoparticle network with high porosity is formed, leading to significantly enhanced response to ethanol compared to ex-situ annealed counterparts and commercially available nanoparticles. AC impedance spectroscopy reveals that the increase in performance is attributed to the large number of highly accessible and effective adsorption sites on the in-situ annealed material.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Decoration of multi-walled carbon nanotubes with CuO/Cu2O nanoparticles for selective sensing of H2S gas

Jae Hoon Bang et al.

Summary: The study involved decorating multi-walled carbon nanotubes with Cu2O/CuO nanoparticles for gas sensing applications, resulting in high sensor response to H2S gas. The Cu2O/CuO decorations increased the effective surface area for sensing studies and acted as an effective catalyst for H2S gas.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Design and preparation of hollow NiO sphere- polyaniline composite for NH3 gas sensing at room temperature

Qi Hu et al.

Summary: The h-NiO-PANI sensor developed in this study, based on the hollow NiO sphere and polyaniline composite material, shows efficient and rapid detection of NH3 gas at room temperature. It exhibits excellent NH3 response and anti-interference performance, making it a promising candidate for daily life applications.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Polydopamine-modified SnO2 nanofiber composite coated QCM gas sensor for high-performance formaldehyde sensing

Zhanjia Kang et al.

Summary: This paper presents a quartz crystal microbalance sensor based on SnO2 NFs/PDA composite with high sensitivity and selectivity to formaldehyde gas. The sensor exhibited excellent sensing characteristics over a wide range of formaldehyde concentration, including high sensitivity, short response/recovery times, and high linearity. The adsorption mechanism of formaldehyde gas was attributed to hydrogen bonding and aldehyde ammonia Schiff base interactions.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Dual-target gas-phase biosensor (bio-sniffer) for assessment of lipid metabolism from breath acetone and isopropanol

Koji Toma et al.

Summary: VOCs in breath and skin gas are promising samples for disease screening and metabolism assessment, with simultaneous measurement of multiple VOCs improving examination quality. A dual-target gas-phase biosensor was developed to measure IPA and acetone vapours, relevant to lipid metabolisms, showing dynamic ranges that encompass those in the breath of healthy people. The biosensor was applied for measurement of IPA and acetone in the breath of healthy people, demonstrating intermittent and repeated measurement of both VOCs.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

MOF-derived porous Fe2O3 nanocubes combined with reduced graphene oxide for n-butanol room temperature gas sensing

Ruixue Mo et al.

Summary: The study successfully prepared porous Fe2O3 nanocubes using prussian blue metal-organic framework as a self-template, combined with reduced graphene oxide to form a gas sensor with enhanced sensing performance towards n-butanol. The sensor exhibited excellent selectivity, perfect linearity, and outstanding long-term stability.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Selective ppb-level NO2 gas sensor based on SnO2-boron nitride nanotubes

Bharat Sharma et al.

Summary: This paper demonstrated a hybrid SnO2-BNNTs sensor for trace ppb-level NO2 detection, with a low detection limit and better sensor response than the SnO2 sensor. The sensing characteristics of the sensor were studied, including response, repeatability, stability, and response-recovery time. The increased space charge depleted regions at the p-n heterojunction promoted a tunneling effect and provided conducting channels through BNNTs for an improved sensor response.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

New nano-composite based on carbon dots (CDots) decorated magnesium oxide (MgO) nano-particles (CDots@MgO) sensor for high H2S gas sensitivity performance

Ahmed Gamal El-Shamy

Summary: A Schottky device based on carbon dots decorated magnesium oxide nanoparticles has been engineered for H2S gas sensing applications, displaying high response and sensitivity due to reduced barrier height between crystals.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Pd-Doping-Induced Oxygen Vacancies in One-Dimensional Tungsten Oxide Nanowires for Enhanced Acetone Gas Sensing

Ping Li et al.

Summary: Metal oxide semiconductors with tunable interface structures and properties have been widely used as gas sensing materials. Constructing appropriate heterogeneous interface structures and oxygen vacancies is important for tuning the sensing properties. This study demonstrates that Pd doping can effectively change the structure and composition of one-dimensional nanomaterials, leading to enhanced sensing properties towards acetone. The fabricated heterostructures in PdxW18O49 nanowires have shown excellent sensing selectivity and a wide detection range, making them promising for high-performance gas sensors.

ANALYTICAL CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

An Ion-In-Conjugation-Boosted Organic Semiconductor Gas Sensor Operating at High Temperature and Immune to Moisture

Chuang Yu et al.

Summary: Organic electrical gas sensors have made significant advancements in sensitivity and selectivity through the use of new materials and concepts, allowing them to operate at higher temperatures and humidity levels. Research also found that sensitivity increased with temperature, and the introduction of the ion-in-conjugation concept had a significant impact on sensor performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Review Chemistry, Analytical

Molecularly Imprinted Polymer-Based Sensors for Priority Pollutants

Mashaalah Zarejousheghani et al.

Summary: There is growing global concern about the health risks of water and air pollution, with EPA listing 129 different chemical compounds as priority pollutants. Long-term exposure to these chemicals can cause severe health effects, and MIPs show great potential for developing sensors to detect these pollutants.

SENSORS (2021)

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Article Chemistry, Analytical

Pore size dependent acetic acid gas sensing performance of mesoporous CuO

Wangchang Geng et al.

Summary: Mesoporous CuO materials with adjustable pore size and high specific surface area were successfully synthesized by a simple and economical one-pot hydrothermal method. The optimal gas-sensing performance was achieved with a film thickness of about 71μm, while mesoporous CuO materials with higher specific surface area and suitable pore size distribution showed enhanced acetic acid sensing performance.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Review Materials Science, Multidisciplinary

Food Sensors: Challenges and Opportunities

Max Weston et al.

Summary: Food sensors have been developed for quality monitoring and contaminant detection to improve food management. However, challenges such as the complexity of food samples, sensor design, and signal processing need to be addressed for successful translation into commercial products.

ADVANCED MATERIALS TECHNOLOGIES (2021)

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Article Chemistry, Analytical

Internet of Food (IoF), Tailor-Made Metal Oxide Gas Sensors to Support Tea Supply Chain

Estefania Nunez-Carmona et al.

Summary: This study analyzed the volatile compounds of three major types of tea using different technologies and methods, providing a competitive tool to enhance product quality. The results demonstrate the potential of an innovative remote controllable technology supported by machine learning to increase food safety along the entire production chain.

SENSORS (2021)

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Article Engineering, Electrical & Electronic

Significantly enhanced NO2 gas-sensing performance of nanojunction-networked SnO2 nanowires by pulsed UV-radiation

Nguyen Manh Hung et al.

Summary: A unique combination of nanojunction-networked SnO2 nanowires and pulsed UV-radiation shows high response gas sensors working at room temperature. The pulsed UV-radiation significantly enhances gas response and reduces response and recovery times. The enhancement of gas response is attributed to the photogeneration of electron-hole pairs.

SENSORS AND ACTUATORS A-PHYSICAL (2021)

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Article Chemistry, Analytical

Self-template synthesis of spherical mesoporous tin dioxide from tin-polyphenol-formaldehyde polymers for conductometric ethanol gas sensing

Bingxi Feng et al.

Summary: Spherical mesoporous SnO2 materials with tunable diameter, large pore size and high specific surface area are synthesized via a self-template strategy by direct thermal decomposition of tin-polyphenol-formaldehyde polymers. Gas sensors fabricated from these materials exhibit excellent sensitivity to ethanol, fast response and recovery time, good repeatability, and long-term stability, showing potential applications in catalysis, sensing and energy storage.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Material dependent and temperature driven adsorption switching (p- to n-type) using CNT/ZnO composite-based chemiresistive methanol gas sensor

Madhumita Sinha et al.

Summary: The study presents a composite chemiresistive sensor utilizing carbon nanotubes and zinc oxide for detecting VOCs, demonstrating unique adsorption switching phenomena and dual-mode sensor capabilities. The sensor shows selectivity towards methanol with high response values, making it a highly reproducible and high-quality sensor.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Facile synthesis of mesoporous CdS/PbS/SnO2 composites for high-selectivity H2 gas sensor

Haineng Bai et al.

Summary: Novel mesoporous heterostructures composed of CdS, PbS, and SnO2 were synthesized via a green and facile treatment, showing enhanced gas-sensing properties for H-2 gas detection. The CdS/PbS/SnO2 sensor exhibited fast response/recovery time, ultralow detection limit, outstanding selectivity, reliable reversibility, and long-term stability, mainly attributed to its large surface-to-volume ratio and numerous heterojunctions for accelerated carrier transfer. This work suggests great potential for ppb-level H-2 gas monitoring in extreme environments.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

Ultrahigh sensitivity and surface mechanism of gas sensing process in composite material of combining In2O3 with metal-organic frameworks derived Co3O4

Dongmei Han et al.

Summary: By utilizing the advantages of metal organic frameworks and metal oxide semiconductors, a composite material was synthesized to significantly improve gas sensor performance. Systematic ethanol detection confirmed the sensors based on this material made significant progress in sensitivity and selectivity. The enhanced performance was attributed to the heterojunction effect and abundant active sites.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Chemistry, Analytical

How femtosecond laser irradiation can affect the gas sensing behavior of SnO2 nanowires toward reducing and oxidizing gases

Jae-Hun Kim et al.

Summary: Generating oxygen vacancies on SnO2 nanowires by femtosecond laser irradiation can enhance gas sensing properties, improving response to NO2 and toluene gases. Lower laser pulse energy leads to better sensing performance.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Multidisciplinary Sciences

Fully integrated ultra-sensitive electronic nose based on organic field-effect transistors

Daniil S. Anisimov et al.

Summary: Modern solid-state gas sensors have reached a detection limit approaching ppb levels, with applications in process control, environmental monitoring, and exhaled breath analysis. Organic field-effect transistors (OFETs) show great promise for gas sensing due to their sensitivity, low cost, and low power consumption. However, they face challenges in selectivity and environmental stability, which can be addressed through the development of cross-selective arrays and proper analysis techniques. The newly developed integrated OFET-based electronic nose demonstrates high sensitivity and can differentiate toxic air pollutants, paving the way for affordable air sensing networks in the Internet of Things.

SCIENTIFIC REPORTS (2021)

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Article Oncology

Urine LOX-1 and Volatilome as Promising Tools towards the Early Detection of Renal Cancer

Michela Murdocca et al.

Summary: This study presents an innovative combined approach to identify the presence of LOX-1 protein within the urine of clear cell RCC patients for the first time, which is quantitatively correlated to tumor grade and stage, showing potential for early diagnosis and management. The identification of specific biomarkers in biofluids by combined approaches could be suitable for RCC, especially due to easy obtainability by noninvasive methods. The study demonstrates the diagnostic potential of volatile compounds in urine and their correlation with LOX-1 and cancer, offering promising results for ccRCC tumors.

CANCERS (2021)

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Article Multidisciplinary Sciences

Sensor array and gas chromatographic detection of the blood serum volatolomic signature of COVID-19

Yolande Ketchanji Mougang et al.

Summary: This study demonstrates that volatile organic compounds (VOCs) in blood serum can accurately distinguish COVID-19 patients, providing a new method for disease diagnosis. The analysis of more than 100 different VOCs showed that the pattern of abundances of 17 compounds could identify COVID-19 from non-COVID with an accuracy of 89%. The combination of GC/MS analysis and gas sensor array achieved an accuracy of 89% in distinguishing COVID-19 patients.

ISCIENCE (2021)

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Article Chemistry, Analytical

Detection of the bacteria concentration level in pasteurized milk by using two different artificial multisensory methods

Jeniffer Katerine Carrillo-Gomez et al.

Summary: This paper describes the successful detection and classification of Escherichia coli, Salmonella enterica, and Klebsiella pneumoniae in pasteurized milk using an E-nose and E-tongue, which both achieved comparable results. The E-tongue with a gold electrode demonstrated a high success rate in discriminating decreasing concentrations of E. coli in the milk.

SENSING AND BIO-SENSING RESEARCH (2021)

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Article Materials Science, Multidisciplinary

Electrohydrodynamic jet printed conducting polymer for enhanced chemiresistive gas sensors†

Nhlakanipho Mkhize et al.

Summary: Electrohydrodynamic Jet Printing (EHD) is capable of printing sub-micron structures with various materials, showing promising results in compared to traditional additive manufacturing techniques. By using EHD to print polyaniline-based chemiresistors, researchers achieved high detection sensitivity for ammonia gas sensors on both glass and flexible substrates. The study also highlighted the importance of dopant acids in polymer structure and sensing, paving the way for further development of miniaturized flexible polymer sensors.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Nanoscience & Nanotechnology

TiO2 Nanowires for Humidity-Stable Gas Sensors for Toluene and Xylene

Zamaswazi P. Tshabalala et al.

Summary: The study demonstrates temperature-dependent selectivity and stability towards CO, C7H8, and C8H10 by synthesizing various TiO2 nanostructures, with TiO2 nanowires exhibiting dual-selectivity functionality towards C7H8 and C8H10, as well as higher surface area and interconnected pore distribution compared to TiO2 nanoparticles. The X-ray diffraction patterns confirmed the tetragonal structure of anatase TiO2, while surface studies revealed different morphologies with TiO2 nanowires showing the highest concentration of oxygen vacancies and Ti3+ which influenced its dual-selectivity functionality.

ACS APPLIED NANO MATERIALS (2021)

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Article Materials Science, Multidisciplinary

High performance gas sensors with dual response based on organic ambipolar transistors

Xu Zhou et al.

Summary: Research on organic semiconductor gas sensors based on ambipolar transistors shows higher sensitivity and stability in gas sensing, enabling easier discrimination of target gases.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Methane Detection with a Tungsten-Calix[4]arene-Based Conducting Polymer Embedded Sensor Array

Ru-Qiang Lu et al.

Summary: A sensor using a special material demonstrates high sensitivity to methane detection in dry air, with a theoretical limit of detection of 2 ppm. Additionally, discrimination of methane from interfering volatile organic compounds is achieved through a sensor array and principal component analysis.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Analytical

Facile synthesis of MgGa2O4/graphene composites for room temperature acetic acid gas sensing

Lifang He et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Nanoscience & Nanotechnology

Fabrication of a Micro-Electromechanical System-Based Acetone Gas Sensor Using CeO2 Nanodot-Decorated WO3 Nanowires

Kaiping Yuan et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Room-Temperature, Highly Durable Ti3C2Tx MXene/Graphene Hybrid Fibers for NH3 Gas Sensing

Sang Hoon Lee et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Nanoscience & Nanotechnology

Enhancing the Charge Carrier Separation and Transport via Nitrogen-Doped Graphene Quantum Dot-TiO2 Nanoplate Hybrid Structure for an Efficient NO Gas Sensor

G. Murali et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Engineering, Environmental

Rapid detection of low concentration CO using Pt-loaded ZnO nanosheets

Yan Wang et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

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Article Engineering, Environmental

Room-temperature gas sensors based on ZnO nanorod/Au hybrids: Visible-light-modulated dual selectivity to NO2 and NH3

Jing Wang et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

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Article Engineering, Electrical & Electronic

Transition metal dichalcogenides-based flexible gas sensors

Rahul Kumar et al.

SENSORS AND ACTUATORS A-PHYSICAL (2020)

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Article Chemistry, Analytical

Enhancement of gas sensing by implantation of Sb-ions in SnO2 nanowires

Jae-Hun Kim et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Carbon monoxide gas sensing properties of metal-organic frameworks-derived tin dioxide nanoparticles/molybdenum diselenide nanoflowers

Zhimin Yang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Visible-light activated room temperature NO2 sensing of SnS2 nanosheets based chemiresistive sensors

Ding Gu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Design of highly porous SnO2-CuO nanotubes for enhancing H2S gas sensor performance

Kee-Ryung Park et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

UV-light enhanced CO gas sensors based on InGaN nanorods decorated with p-Phenylenediamine-graphene oxide composite

Maddaka Reddeppa et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

Optimization of the surface coverage of metal nanoparticles on nanowires gas sensors to achieve the optimal sensing performance

Jae-Hyoung Lee et al.

SENSORS AND ACTUATORS B-CHEMICAL (2020)

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Article Chemistry, Analytical

High-performance dual cavity-interferometric volatile gas sensor utilizing Graphene/PMMA nanocomposite

Dnyandeo Pawar et al.

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Highly repeatable and sensitive three-dimensional γ-Fe2O3@reduced graphene oxide gas sensors by magnetic-field assisted assembly process

Cheng Zou et al.

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Variation of shell thickness in ZnO-SnO2 core-shell nanowires for optimizing sensing behaviors to CO, C6H6, and C7H8 gases

Jae-Hun Kim et al.

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Controllable synthesis of ultrathin WO3 nanotubes and nanowires with excellent gas sensing performance

Shah Zeb et al.

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Preparation of Gas-Responsive Imprinting Hydrogel and Their Gas-Driven Switchable Affinity for Target Protein Recognition

Yubo Wei et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Trace-Level, Multi-Gas Detection for Food Quality Assessment Based on Decorated Silicon Transistor Arrays

Zhen Yuan et al.

ADVANCED MATERIALS (2020)

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Enhanced Gas Sensing Performance of Organic Field-Effect Transistors by Modulating the Dimensions of Triethylsilylethynyl-Anthradithiophene Microcrystal Arrays

Do Hun Kwak et al.

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Rational design and tunable synthesis of Co3O4 nanoparticle-incorporating into In2O3 one-dimensional ribbon as effective sensing material for gas detection

Rui Zhang et al.

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Advances in the Development of Innovative Sensor Platforms for Field Analysis

Silvia Rizzato et al.

MICROMACHINES (2020)

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Discriminable Sensing Response Behavior to Homogeneous Gases Based on n-ZnO/p-NiO Composites

Wen-Dong Zhou et al.

NANOMATERIALS (2020)

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Review of Gravimetric Sensing of Volatile Organic Compounds

Christine K. McGinn et al.

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In Situ Formation of Multiple Schottky Barriers in a Ti3C2MXene Film and its Application in Highly Sensitive Gas Sensors

Junghoon Choi et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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VLS growth of pure and Au decorated β-Ga2O3 nanowires for room temperature CO gas sensor and resistive memory applications

Tzu-Feng Weng et al.

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2D Transition Metal Dichalcogenide Heterostructures for p- and n-Type Photovoltaic Self-Powered Gas Sensor

Youngjun Kim et al.

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UV assisted ppb-level acetone detection based on hollow ZnO/MoS2 nanosheets core/shell heterostructures at low temperature

Xiao Chang et al.

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Monitoring of Post-Harvest Maturation Processes inside Stored Fruit Using Photoacoustic Gas Sensing Spectroscopy

Ana Maria Bratu et al.

MATERIALS (2020)

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Formaldehyde detection with chemical gas sensors based on WO3 nanowires decorated with metal nanoparticles under dark conditions and UV light irradiation

Benachir Bouchikhi et al.

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Indium-implantation-induced enhancement of gas sensing behaviors of SnO2 nanowires by the formation of homo-core-shell structure

Jae-Hun Kim et al.

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Electronic Nose for Monitoring Odor Changes of Lactobacillus Species during Milk Fermentation and Rapid Selection of Probiotic Candidates

Zoltan Kovacs et al.

FOODS (2020)

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Monitoring Food Spoilage Based on a Defect-Induced Multiwall Carbon Nanotube Sensor at Room Temperature: Preventing Food Waste

Nagih M. Shaalan et al.

ACS OMEGA (2020)

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Conducting polymer-inorganic nanocomposite-based gas sensors: a review

Yan Yan et al.

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS (2020)

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Carbon nanotubes: functionalisation and their application in chemical sensors

Mohd Nurazzi Norizan et al.

RSC ADVANCES (2020)

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Synthesis of Pd nanoparticle-decorated SnO2 nanowires and determination of the optimum quantity of Pd nanoparticles for highly sensitive and selective hydrogen gas sensor

Zhicheng Cai et al.

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Onsite fish quality monitoring using ultra-sensitive patch electrode capacitive sensor at room temperature

Mukut Senapati et al.

BIOSENSORS & BIOELECTRONICS (2020)

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Study of a platinum nanoparticle (Pt NP)/amorphous In-Ga-Zn-O (A-IGZO) thin-film-based ammonia gas sensor

Po-Lin Chen et al.

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A high-performance trace level acetone sensor using an indispensable V4C3Tx MXene

Wei-Na Zhao et al.

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Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors

Tran Thi Ngoc Hoa et al.

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Stable One-Dimensional Single Crystalline Black Phosphorus Nanowires for Gas Sensing

Xiaohong Jiang et al.

ACS APPLIED NANO MATERIALS (2020)

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Nanotechnology-based approaches for food sensing and packaging applications

Fatima Mustafa et al.

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Carbon Nanotube Chemical Sensors

Vera Schroeder et al.

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Molecularly Imprinted Polymers

Joseph J. BelBruno

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3D-multilayer MoS2 nanosheets vertically grown on highly mesoporous cubic In2O3 for high-performance gas sensing at room temperatur

Muhammad Ikram et al.

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Black tea classification employing feature fusion of E-Nose and E-Tongue responses

Mahuya Bhattacharyya Banerjee et al.

JOURNAL OF FOOD ENGINEERING (2019)

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Progress toward a novel methane gas sensor based on SnO2 nanorods-nanoporous graphene hybrid

Mohammad Kooti et al.

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Predictive gas sensor based on thermal fingerprints from Pt-SnO2 nanowires

Matteo Tonezzer et al.

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Bilayer Au nanoparticle-decorated WO3 porous thin films: On-chip fabrication and enhanced NO2 gas sensing performances with high selectivity

Hongwen Zhang et al.

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One-step electrospun SnO2/MOx heterostructured nanomaterials for highly selective gas sensor array integration

Longfei Song et al.

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Intelligent Food Packaging: A Review of Smart Sensing Technologies for Monitoring Food Quality

Hanie Yousefi et al.

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In Situ Growth of Leakage-Free Direct-Bridging GaN Nanowires: Application to Gas Sensors for Long-Term Stability, Low Power Consumption, and Sub-ppb Detection Limit

Danna Zhao et al.

NANO LETTERS (2019)

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Enhanced gas sensing performance based on the fabrication of polycrystalline Ag@TiO2 core-shell nanowires

Xiaohong Yang et al.

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Development of a Pd/Cu nanowires coated SAW hydrogen gas sensor with fast response and recovery

Wen Wang et al.

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Low-Voltage-Driven Sensors Based on ZnO Nanowires for Room-Temperature Detection of NO2 and CO Gases

Jae-Hun Kim et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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High-Temperature Gas Sensors for Harsh Environment Applications: A Review

Abhishek Ghosh et al.

CLEAN-SOIL AIR WATER (2019)

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The 2019 surface acoustic waves roadmap

Per Delsing et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2019)

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Carbon nanotubes and its gas-sensing applications: A review

Tao Han et al.

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Fabrication of Co3O4 nanowires assembled on the surface of hollow carbon spheres for acetone gas sensing

Chunmei Zhang et al.

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Synthesis of three-dimensionally ordered macro/mesoporous C-doped WO3 materials: Effect of template sizes on gas sensing properties

Meng-Di Wang et al.

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Selective gas sensor based on one single SnO2 nanowire

Matteo Tonezzer

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Ultraselective acetone-gas sensor based ZnO flowers functionalized by Au nanoparticle loading on certain facet

Peng Wang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

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Rationally designed mesoporous In2O3 nanofibers functionalized Pt catalysts for high-performance acetone gas sensors

Wei Liu et al.

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Chemiresistive Sensor Array and Machine Learning Classification of Food

Vera Schroeder et al.

ACS SENSORS (2019)

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Review Respiratory System

Breath analysis of cancer in the present and the future

Reef Einoch Amor et al.

EUROPEAN RESPIRATORY REVIEW (2019)

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Review on Smart Gas Sensing Technology

Shaobin Feng et al.

SENSORS (2019)

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Toluene- and benzene-selective gas sensors based on Pt- and Pd-functionalized ZnO nanowires in self-heating mode

Jae-Hun Kim et al.

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Room-temperature-operated fast and reversible vertical-heterostructure-diode gas sensor composed of reduced graphene oxide and AlGaN/GaN

Atanu Bag et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

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WO3 nanowires loaded with cobalt oxide nanoparticles, deposited by a two-step AACVD for gas sensing applications

Eric Navarrete et al.

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Diffusion-Driven Al-Doping of ZnO Nanorods and Stretchable Gas Sensors Made of Doped ZnO Nanorods/Ag Nanowires Bilayers

Gitae Namgung et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Reduced Graphene Oxide/Mesoporous ZnO NSs Hybrid Fibers for Flexible, Stretchable, Twisted, and Wearable NO2 E-Textile Gas Sensor

Weiwei Li et al.

ACS SENSORS (2019)

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Ultrahigh-sensitive gas sensors based on doped phosphorene: A first-principles investigation

Jariyanee Prasongkit et al.

APPLIED SURFACE SCIENCE (2019)

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Sputtered SnO2:NiO thin films on self-assembled Au nanoparticle arrays for MEMS compatible NO2 gas sensors

Ying Wang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

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Room temperature toluene gas sensor based on TiO2 nanoparticles decorated 3D graphene-carbon nanotube nanostructures

Yotsarayuth Seekaew et al.

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Effect of Crystallization Modes in TIPS-pentacene/Insulating Polymer Blends on the Gas Sensing Properties of Organic Field-Effect Transistors

Jung Hun Lee et al.

SCIENTIFIC REPORTS (2019)

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Near-Room-Temperature Ethanol Gas Sensor Based on Mesoporous Ag/Zn-LaFeO3 Nanocomposite

Mingpeng Chen et al.

ADVANCED MATERIALS INTERFACES (2019)

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Pore Engineering of Mesoporous Tungsten Oxides for Ultrasensitive Gas Sensing

Yuhui Li et al.

ADVANCED MATERIALS INTERFACES (2019)

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Apple fruit quality monitoring at room temperature using sol-gel spin coated Ni-SnO2 thin film sensor

Ajay Beniwal et al.

JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION (2019)

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Octahedral SnO2/Graphene Composites with Enhanced Gas-Sensing Performance at Room Temperature

Lizhai Zhang et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Understanding the noble metal modifying effect on In2O3 nanowires: highly sensitive and selective gas sensors for potential early screening of multiple diseases

Liu Wei et al.

NANOSCALE HORIZONS (2019)

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Profiling Single Cancer Cells with Volatolomics Approach

Mamatha Serasanambati et al.

ISCIENCE (2019)

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Preventing explosions of hydrogen gas inhalers

Ryosuke Kurokawa et al.

MEDICAL GAS RESEARCH (2019)

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Amplifying gas sensor performance by embedding a cellulose-based buffer layer in organic transistors

Moonjeong Jang et al.

JOURNAL OF MATERIALS CHEMISTRY C (2019)

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Ordered Mesoporous Tin Oxide Semiconductors with Large Pores and Crystallized Walls for High-Performance Gas Sensing

Xingyu Xiao et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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Real-time assessment of food freshness in refrigerators based on a miniaturized electronic nose

Min Wang et al.

ANALYTICAL METHODS (2018)

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A study on volatile organic compounds emitted by in-vitro lung cancer cultured cells using gas sensor array and SPME-GCMS

Reena Thriumani et al.

BMC CANCER (2018)

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Ordered porous metal oxide semiconductors for gas sensing

Xinran Zhou et al.

CHINESE CHEMICAL LETTERS (2018)

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Embedded Platform for Gas Applications Using Hardware/Software Co-Design and RFID

Amine Ait Si Ali et al.

IEEE SENSORS JOURNAL (2018)

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Highly Sensitive, Printable Nanostructured Conductive Polymer Wireless Sensor for Food Spoilage Detection

Zhong Ma et al.

NANO LETTERS (2018)

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A physically based compact I-V model for monolayer TMDC channel MOSFET and DMFET biosensor

Ehsanur Rahman et al.

NANOTECHNOLOGY (2018)

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The preparation of reduced graphene oxide-encapsulated alpha-Fe2O3 hybrid and its outstanding NO2 gas sensing properties at room temperature

Bo Zhang et al.

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A review on advances in application of polyaniline for ammonia detection

Nicolas R. Tanguy et al.

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Simple fabrication method of silicon/tungsten oxide nanowires heterojunction for NO2 gas sensors

Kyounghoon Lee et al.

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Low power-consumption CO gas sensors based on Au-functionalized SnO2-ZnO core-shell nanowires

Jae-Hun Kim et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Carbon dioxide colorimetric indicators for food packaging application: Applicability of anthocyanin and poly-lysine mixtures

Francesco Saliu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Pt-In2O3 mesoporous nanofibers with enhanced gas sensing performance towards ppb-level NO2 at room temperature

Yunshi Liu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Article Chemistry, Analytical

Highly flexible, mechanically stable, and sensitive NO2 gas sensors based on reduced graphene oxide nanofibrous mesh fabric for flexible electronics

Hyung Ju Park et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Reduced graphene oxide-CuFe2O4 nanocomposite: A highly sensitive room temperature NH3 gas sensor

L. Satish K. Achary et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Fabrication of conductive graphene oxide-WO3 composite nanofibers by electrospinning and their enhanced acetone gas sensing properties

Jinniu Zhang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Article Chemistry, Analytical

Simple post-synthesis of mesoporous p-type Co3O4 nanochains for enhanced H2S gas sensing performance

Pham Long Quang et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Facile synthesis of SnO2 hierarchical porous nanosheets from graphene oxide sacrificial scaffolds for high-performance gas sensors

Changuhi Zhao et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Versatile breath sampler for online gas sensor analysis

Stephanie Schon et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Exhaled breath analysis using electronic nose and gas chromatography-mass spectrometry for non-invasive diagnosis of chronic kidney disease, diabetes mellitus and healthy subjects

Tarik Saidi et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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A low temperature, highly sensitive and fast response toluene gas sensor based on In(III)-SnO2 loaded cubic mesoporous graphitic carbon nitride

Ritu Malik et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Interaction-tailored organization of large-area colloidal assemblies

Silvia Rizzato et al.

BEILSTEIN JOURNAL OF NANOTECHNOLOGY (2018)

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High-Performance Flexible ZnO Nanorod UV/Gas Dual Sensors Using Ag Nanoparticle Templates

Do-Kyun Kwon et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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UV-illumination and Au-nanoparticles enhanced gas sensing of p-type Na-doped ZnO nanowires operating at room temperature

Cheng-Liang Hsu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2018)

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Article Chemistry, Multidisciplinary

Pt-Functionalized PdO Nanowires for Room Temperature Hydrogen Gas Sensors

Hee-Jin Cho et al.

ACS SENSORS (2018)

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Highly Sensitive, Temperature-Independent Oxygen Gas Sensor Based on Anatase TiO2 Nanoparticle Grafted, 2D Mixed Valent VOx Nanoflakelets

Appu Vengattoor Raghu et al.

ACS SENSORS (2018)

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Optimization of SAW and EIS sensors suitable for environmental particulate monitoring

Maria Serena Chiriaco et al.

MICROELECTRONIC ENGINEERING (2018)

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Two-Dimensional Transition Metal Dichalcogenides and Metal Oxide Hybrids for Gas Sensing

Eunji Lee et al.

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Highly Selective Sensing of C2H6O, HCHO, and C3H6O Gases by Controlling SnO2 Nanoparticle Vacancies

Lingyue Liu et al.

ACS APPLIED NANO MATERIALS (2018)

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Environmental Gas Sensing with Cavitands

Roberta Pinalli et al.

CHEMISTRY-A EUROPEAN JOURNAL (2018)

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Pt Nanoparticles Sensitized Ordered Mesoporous WO3 Semiconductor: Gas Sensing Performance and Mechanism Study

Junhao Ma et al.

ADVANCED FUNCTIONAL MATERIALS (2018)

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Diagnosis and Classification of 17 Diseases from 1404 Subjects via Pattern Analysis of Exhaled Molecules

Morad K. Nakhleh et al.

ACS NANO (2017)

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Porphyrinoids for Chemical Sensor Applications

Roberto Paolesse et al.

CHEMICAL REVIEWS (2017)

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Low cost smart phone diagnostics for food using paper-based colorimetric sensor arrays

Yu Chen et al.

FOOD CONTROL (2017)

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Recent development of two-dimensional transition metal dichalcogenides and their applications

Wonbong Choi et al.

MATERIALS TODAY (2017)

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A Formaldehyde Sensor Based on Molecularly-Imprinted Polymer on a TiO2 Nanotube Array

Xiaohui Tang et al.

SENSORS (2017)

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Gas Sensors Based on Molecular Imprinting Technology

Yumin Zhang et al.

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SAW Sensors for Chemical Vapors and Gases

Jagannath Devkota et al.

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Novel proximal fish freshness monitoring using batteryless smart sensor tag

Wan-Young Chung et al.

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Self-heating effects on the toluene sensing of Pt-functionalized SnO2-ZnO core-shell nanowires

Jae-Hun Kim et al.

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Quantitative detection of formaldehyde and ammonia gas via metal oxide-modified graphene-based sensor array combining with neural network model

Dongzhi Zhang et al.

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Flexible polyaniline/carbon nanotube nanocomposite film-based electronic gas sensors

Lina Xue et al.

SENSORS AND ACTUATORS B-CHEMICAL (2017)

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Reduced graphene oxide/α-Fe2O3 composite nanofibers for application in gas sensors

Lanlan Guo et al.

SENSORS AND ACTUATORS B-CHEMICAL (2017)

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Clinical contributions of exhaled volatile organic compounds in the diagnosis of lung cancer

Tsuyoshi Oguma et al.

PLOS ONE (2017)

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Excitation and time resolved spectroscopy of SAW harmonics up to GHz regime in photolithographed GaAs devices

Silvia Rizzato et al.

JOURNAL OF MICROMECHANICS AND MICROENGINEERING (2017)

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An Ultrasensitive Organic Semiconductor NO2 Sensor Based on Crystalline TIPS-Pentacene Films

Zi Wang et al.

ADVANCED MATERIALS (2017)

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Calixarenes based materials for gas sensing applications: a review

Satish Kumar et al.

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY (2017)

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Functional hybrid nanostructure materials: Advanced strategies for sensing applications toward volatile organic compounds

Vanish Kumar et al.

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Polyaniline nanofibers: broadening applications for conducting polymers

Christina O. Baker et al.

CHEMICAL SOCIETY REVIEWS (2017)

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Nanostructured Materials for Room-Temperature Gas Sensors

Jun Zhang et al.

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Breath testing as potential colorectal cancer screening tool

Haitham Amal et al.

INTERNATIONAL JOURNAL OF CANCER (2016)

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Development of a low cost optimized handheld embedded odor sensing system (HE-Nose) to assess ripeness of oranges

Satyam Srivastava et al.

JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION (2016)

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MOF-Based Membrane Encapsulated ZnO Nanowires for Enhanced Gas Sensor Selectivity

Martin Drobek et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

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Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: A review

A. Mirzaei et al.

CERAMICS INTERNATIONAL (2016)

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Development and validation of a colorimetric sensor array for fish spoilage monitoring

Mohamed K. Morsy et al.

FOOD CONTROL (2016)

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Investigation of high-k yttrium copper titanate thin films as alternative gate dielectrics

Anna Grazia Monteduro et al.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2016)

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Nano-Optomechanical Systems for Gas Chromatography

Anandram Venkatasubramanian et al.

NANO LETTERS (2016)

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Hierarchical graphene-polyaniline nanocomposite films for high-performance flexible electronic gas sensors

Yunlong Guo et al.

NANOSCALE (2016)

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Dielectric investigation of high-k yttrium copper titanate thin films

Anna Grazia Monteduro et al.

JOURNAL OF MATERIALS CHEMISTRY C (2016)

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Comparison of volatile organic compounds from lung cancer patients and healthy controls-challenges and limitations of an observational study

Kristin Schallschmidt et al.

JOURNAL OF BREATH RESEARCH (2016)

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Surface acoustic wave devices for sensor applications

Liu Bo et al.

JOURNAL OF SEMICONDUCTORS (2016)

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Deep Cavitand Self-Assembled on Au NPs-MWCNT as Highly Sensitive Benzene Sensing Interface

Pierrick Clement et al.

ADVANCED FUNCTIONAL MATERIALS (2015)

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Breath sensors for lung cancer diagnosis

Yekbun Adiguzel et al.

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Organic-Inorganic Hybrid Nanocomposite-Based Gas Sensors for Environmental Monitoring

Ajeet Kaushik et al.

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Organic field-effect transistor-based gas sensors

Congcong Zhang et al.

CHEMICAL SOCIETY REVIEWS (2015)

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Electronic noses for food quality: A review

Amy Loutfi et al.

JOURNAL OF FOOD ENGINEERING (2015)

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Breath analysis by nanostructured metal oxides as chemo-resistive gas sensors

Marco Righettoni et al.

MATERIALS TODAY (2015)

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Hydrogen gas sensor based on metal oxide nanoparticles decorated graphene transistor

Zhangyuan Zhang et al.

NANOSCALE (2015)

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Chemiresistive polyaniline-based gas sensors: A mini review

Ilaria Fratoddi et al.

SENSORS AND ACTUATORS B-CHEMICAL (2015)

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Response to NO2 and other gases of resistive chemically exfoliated MoS2-based gas sensors

M. Donarelli et al.

SENSORS AND ACTUATORS B-CHEMICAL (2015)

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Gas-sensing and electrical properties of perovskite structure p-type barium-substituted bismuth ferrite

Guangzhi Dong et al.

RSC ADVANCES (2015)

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The lung cancer breath signature: a comparative analysis of exhaled breath and air sampled from inside the lungs

Rosamaria Capuano et al.

SCIENTIFIC REPORTS (2015)

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First Fifty Years of Chemoresistive Gas Sensors

Giovanni Neri

CHEMOSENSORS (2015)

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Sensors for Breath Testing: From Nanomaterials to Comprehensive Disease Detection

Gady Konvalina et al.

ACCOUNTS OF CHEMICAL RESEARCH (2014)

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Solid-state gas sensors for breath analysis: A review

Corrado Di Natale et al.

ANALYTICA CHIMICA ACTA (2014)

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VO2 nanostructures based chemiresistors for low power energy consumption hydrogen sensing

Aline Simo et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2014)

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Phosphorene as a Superior Gas Sensor: Selective Adsorption and Distinct I-V Response

Liangzhi Kou et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2014)

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Article Multidisciplinary Sciences

Humans Can Discriminate More than 1 Trillion Olfactory Stimuli

C. Bushdid et al.

SCIENCE (2014)

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Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview

Hyo-Joong Kim et al.

SENSORS AND ACTUATORS B-CHEMICAL (2014)

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Ultrasensitive room-temperature detection of NO2 with tellurium nanotube based chemiresistive sensor

Lei Guan et al.

SENSORS AND ACTUATORS B-CHEMICAL (2014)

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Intelligent food packaging: The next generation

Mike Vanderroost et al.

TRENDS IN FOOD SCIENCE & TECHNOLOGY (2014)

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Gas Dielectric Transistor of CuPc Single Crystalline Nanowire for SO2 Detection Down to Sub-ppm Levels at Room Temperature

Talgar Shaymurat et al.

ADVANCED MATERIALS (2013)

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Article Oncology

A nanomaterial-based breath test for distinguishing gastric cancer from benign gastric conditions

Z-q Xu et al.

BRITISH JOURNAL OF CANCER (2013)

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Mesoporous materials as gas sensors

Thorsten Wagner et al.

CHEMICAL SOCIETY REVIEWS (2013)

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Nanosphere Lithography: A Powerful Method for the Controlled Manufacturing of Nanomaterials

Pierre Colson et al.

JOURNAL OF NANOMATERIALS (2013)

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Stable Cu2O nanocrystals grown on functionalized graphene sheets and room temperature H2S gas sensing with ultrahigh sensitivity

Lisha Zhou et al.

NANOSCALE (2013)

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Optical gas sensing: a review

Jane Hodgkinson et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2013)

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Towards a Chemiresistive Sensor-Integrated Electronic Nose: A Review

Shih-Wen Chiu et al.

SENSORS (2013)

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Oxide thin films (ZnO, TeO2, SnO2, and TiO2) based surface acoustic wave (SAW) E-nose for the detection of chemical warfare agents

V. Bhasker Raj et al.

SENSORS AND ACTUATORS B-CHEMICAL (2013)

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Nanowire-based gas sensors

Xianping Chen et al.

SENSORS AND ACTUATORS B-CHEMICAL (2013)

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Gas sensors using carbon nanomaterials: A review

Eduard Llobet

SENSORS AND ACTUATORS B-CHEMICAL (2013)

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Facile synthesis of SnO2 nanocrystalline tubes by electrospinning and their fast response and high sensitivity to NOx at room temperature

Chao Jiang et al.

CRYSTENGCOMM (2012)

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WO3 nanorods/graphene nanocomposites for high-efficiency visible-light-driven photocatalysis and NO2 gas sensing

Xiaoqiang An et al.

JOURNAL OF MATERIALS CHEMISTRY (2012)

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Selective Gas Sensing with a Single Pristine Graphene Transistor

Sergey Rumyantsev et al.

NANO LETTERS (2012)

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Nanostructured Metal Oxide Gas Sensors, a Survey of Applications Carried out at SENSOR Lab, Brescia (Italy) in the Security and Food Quality Fields

Andrea Ponzoni et al.

SENSORS (2012)

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Review Chemistry, Analytical

Metal Oxide Nanostructures and Their Gas Sensing Properties: A Review

Yu-Feng Sun et al.

SENSORS (2012)

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Recent developments on graphene and graphene oxide based solid state gas sensors

S. Basu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2012)

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Gas sensor based on p-phenylenediamine reduced graphene oxide

Nantao Hu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2012)

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Article Immunology

Point-of-care breath test for biomarkers of active pulmonary tuberculosis

Michael Phillips et al.

TUBERCULOSIS (2012)

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Toward Practical Gas Sensing with Highly Reduced Graphene Oxide: A New Signal Processing Method To Circumvent Run-to-Run and Device-to-Device Variations

Ganhua Lu et al.

ACS NANO (2011)

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Polyaniline/multiwall carbon nanotube nanocomposite for detecting aromatic hydrocarbon vapors

Wei Li et al.

JOURNAL OF MATERIALS SCIENCE (2011)

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Carbon nanotube films as a platform to transduce molecular recognition events in metalloporphyrins

M. Penza et al.

NANOTECHNOLOGY (2011)

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Gas sensors based on gravimetric detection-A review

S. Fanget et al.

SENSORS AND ACTUATORS B-CHEMICAL (2011)

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Epitaxially grown graphene based gas sensors for ultra sensitive NO2 detection

R. Pearce et al.

SENSORS AND ACTUATORS B-CHEMICAL (2011)

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Semiconducting metal oxides as sensors for environmentally hazardous gases

K. Wetchakun et al.

SENSORS AND ACTUATORS B-CHEMICAL (2011)

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Analysis of biogenic volatile organic compounds in human health and disease

Jack Dummer et al.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2011)

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Article Oncology

Detection of lung, breast, colorectal, and prostate cancers from exhaled breath using a single array of nanosensors

G. Peng et al.

BRITISH JOURNAL OF CANCER (2010)

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Coupling MOS sensors and gas chromatography to interpret the sensor responses to complex food aroma: Application to virgin olive oil

Diego L. Garcia-Gonzalez et al.

FOOD CHEMISTRY (2010)

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Application of the electronic nose to the identification of different milk flavorings

Bei Wang et al.

FOOD RESEARCH INTERNATIONAL (2010)

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DNA-Coated Nanosensors for Breath Analysis

A. T. Charlie Johnson et al.

IEEE SENSORS JOURNAL (2010)

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Synthesis of Mesoporous α-Fe2O3 Nanostructures for Highly Sensitive Gas Sensors and High Capacity Anode Materials in Lithium Ion Batteries

Bing Sun et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2010)

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Ultrasensitive NH3 Gas Sensor from Polyaniline Nanograin Enchased TiO2 Fibers

Jian Gong et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2010)

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Electrical and gas sensing properties of polyaniline functionalized single-walled carbon nanotubes

Jae-Hong Lim et al.

NANOTECHNOLOGY (2010)

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Electronic Nose for Quality Control of Colombian Coffee through the Detection of Defects in Cup Tests

Juan Rodriguez et al.

SENSORS (2010)

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Ordered Mesoporous In2O3: Synthesis by Structure Replication and Application as a Methane Gas Sensor

Thomas Waitz et al.

ADVANCED FUNCTIONAL MATERIALS (2009)

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Gas sensing properties of single crystalline porous silicon nanowires

Kui-Qing Peng et al.

APPLIED PHYSICS LETTERS (2009)

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Polyaniline nanowires-gold nanoparticles hybrid network based chemiresistive hydrogen sulfide sensor

Mahendra D. Shirsat et al.

APPLIED PHYSICS LETTERS (2009)

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Reduced graphene oxide for room-temperature gas sensors

Ganhua Lu et al.

NANOTECHNOLOGY (2009)

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Multifunctional CuO nanowire devices: p-type field effect transistors and CO gas sensors

L. Liao et al.

NANOTECHNOLOGY (2009)

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Diagnosing lung cancer in exhaled breath using gold nanoparticles

Gang Peng et al.

NATURE NANOTECHNOLOGY (2009)

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Identification of Tea Storage Times by Linear Discrimination Analysis and Back-Propagation Neural Network Techniques Based on the Eigenvalues of Principal Components Analysis of E-Nose Sensor Signals

Huichun Yu et al.

SENSORS (2009)

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Applications and Advances in Electronic-Nose Technologies

Alphus D. Wilson et al.

SENSORS (2009)

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Off-flavours detection in alcoholic beverages by electronic nose coupled to GC

J. A. Ragazzo-Sanchez et al.

SENSORS AND ACTUATORS B-CHEMICAL (2009)

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Nanofibers of conducting polyaniline for aromatic organic compound sensor

Wei Li et al.

SENSORS AND ACTUATORS B-CHEMICAL (2009)

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Electronic nose for black tea quality evaluation by an incremental RBF network

Bipan Tudu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2009)

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Gas sensors using hierarchical and hollow oxide nanostructures: Overview

Jong-Heun Lee

SENSORS AND ACTUATORS B-CHEMICAL (2009)

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Review Biochemical Research Methods

Surface acoustic wave biosensors:: a review

Kerstin Laenge et al.

ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2008)

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Electronic nose:: Current status and future trends

Frank Roeck et al.

CHEMICAL REVIEWS (2008)

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Evidence of the self-heating effect on surface reactivity and gas sensing of metal oxide nanowire chemiresistors

Evgheni Strelcov et al.

NANOTECHNOLOGY (2008)

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Electronic nose for wine ageing detection

J. Lozano et al.

SENSORS AND ACTUATORS B-CHEMICAL (2008)

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Preemptive identification of optimum fermentation time for black tea using electronic nose

Nabarun Bhattacharya et al.

SENSORS AND ACTUATORS B-CHEMICAL (2008)

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Vanadium doped tin dioxide as a novel sulfur dioxide sensor

S. Das et al.

TALANTA (2008)

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First example of ZnO-TiO2 nanocomposites by chemical vapor deposition:: Structure, morphology, composition, and gas sensing performances

Davide Barreca et al.

CHEMISTRY OF MATERIALS (2007)

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Detection of individual gas molecules adsorbed on graphene

F. Schedin et al.

NATURE MATERIALS (2007)

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Article Oncology

A study of the volatile organic compounds exhaled by lung cancer cells in vitro for breath diagnosis

Xing Chen et al.

CANCER (2007)

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Synthesis and characterization of chromium-doped mesoporous tungsten oxide for gas-sensing applications

Emma Rossinyol et al.

ADVANCED FUNCTIONAL MATERIALS (2007)

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A dielectric-modulated field-effect transistor for biosensing

Hyungsoon Im et al.

NATURE NANOTECHNOLOGY (2007)

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SnO2-In2O3 nanocomposites as semiconductor gas sensors for CO and NOx detection

Justin T. McCue et al.

CHEMISTRY OF MATERIALS (2007)

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The rise of graphene

A. K. Geim et al.

NATURE MATERIALS (2007)

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Prediction of Italian red wine sensorial descriptors from electronic nose, electronic tongue and spectrophotometric measurements by means of Genetic Algorithm regression models

S. Buratti et al.

FOOD CHEMISTRY (2007)

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Graphene sensor achieves ultimate sensitivity

Simon Hadlington

CHEMISTRY WORLD (2007)

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Porous metal oxides as gas sensors

Michael Tiemann

CHEMISTRY-A EUROPEAN JOURNAL (2007)

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Gas sensors based on conducting polymers

Hua Bai et al.

SENSORS (2007)

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β-arrestin2-mediated internalization of mammalian odorant receptors

Anastasia Mashukova et al.

JOURNAL OF NEUROSCIENCE (2006)

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Multi-channel surface acoustic wave sensors based on principal component analysis (PCA) and linear discriminate analysis (LDA) for organic vapors

Hui-Ping Hsu et al.

JOURNAL OF THE CHINESE CHEMICAL SOCIETY (2006)

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High dielectric constant gate oxides for metal oxide Si transistors

J Robertson

REPORTS ON PROGRESS IN PHYSICS (2006)

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Mesoporous nanoparticle TiO2 thin films for conductometric gas sensing on microhotplate platforms

KD Benkstein et al.

SENSORS AND ACTUATORS B-CHEMICAL (2006)

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Review Biochemical Research Methods

Phthalocyanine-based field-effect transistors as gas sensors

M Bouvet

ANALYTICAL AND BIOANALYTICAL CHEMISTRY (2006)

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Detection of mastitic milk using a gas-sensor array system (electronic nose)

Å Eriksson et al.

INTERNATIONAL DAIRY JOURNAL (2005)

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A study of an electronic nose for detection of lung cancer based on a virtual SAW gas sensors array and imaging recognition method

X Chen et al.

MEASUREMENT SCIENCE AND TECHNOLOGY (2005)

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Co3O4 nanomaterials in lithium-ion batteries and gas sensors

WY Li et al.

ADVANCED FUNCTIONAL MATERIALS (2005)

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Calixarene films as sensitive coatings for QCM-based gas sensors

IA Koshets et al.

SENSORS AND ACTUATORS B-CHEMICAL (2005)

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Article Chemistry, Analytical

Low-level detection of ethanol and H2S with temperature-modulated WO3 nanoparticle gas sensors

R Ionescu et al.

SENSORS AND ACTUATORS B-CHEMICAL (2005)

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Article Chemistry, Analytical

Au/PVC composite -: a new material for solid-state gas sensors detection of nitrogen dioxide in the air

Z Hohercáková et al.

SENSORS AND ACTUATORS B-CHEMICAL (2004)

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Article Engineering, Electrical & Electronic

Vacuum-deposited nanocrystalline polyaniline thin film sensors for detection of carbon monoxide

SCK Misra et al.

SENSORS AND ACTUATORS A-PHYSICAL (2004)

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Article Engineering, Electrical & Electronic

Piezoelectric Pb(Zrx,Ti1-x)O3 thin film cantilever and bridge acoustic sensors for miniaturized photoacoustic gas detectors

N Ledermann et al.

JOURNAL OF MICROMECHANICS AND MICROENGINEERING (2004)

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Article Polymer Science

Preparation and characterization of vacuum deposited semiconducting nanocrystalline polymeric thin film sensors for detection of HCl

SCK Misra et al.

POLYMER (2004)

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Article Chemistry, Multidisciplinary

Enhanced sensitivity of a gas sensor incorporating single-walled carbon nanotube-polypyrrole nanocomposites

KH An et al.

ADVANCED MATERIALS (2004)

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Article Chemistry, Analytical

A highly sensitive self heated SnO2 carbon monoxide sensor

A Salehi

SENSORS AND ACTUATORS B-CHEMICAL (2003)

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Article Chemistry, Analytical

Sensitivity properties of a novel NO2 gas sensor based on mesoporous WO3 thin film

LG Teoh et al.

SENSORS AND ACTUATORS B-CHEMICAL (2003)

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Article Biophysics

Lung cancer identification by the analysis of breath by means of an array of non-selective gas sensors

C Di Natale et al.

BIOSENSORS & BIOELECTRONICS (2003)

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Impedancemetric gas sensor based on zirconia solid electrolyte and oxide sensing electrode for detecting total NOx at high temperature

N Miura et al.

SENSORS AND ACTUATORS B-CHEMICAL (2003)

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Article Chemistry, Analytical

Gas-sensing properties of ordered mesoporous SnO2 and effects of coatings thereof

T Hyodo et al.

SENSORS AND ACTUATORS B-CHEMICAL (2003)

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Tailored nanoparticle films from monosized tin oxide nanocrystals: Particle synthesis, film formation, and size-dependent gas-sensing properties

MK Kennedy et al.

JOURNAL OF APPLIED PHYSICS (2003)

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Article Chemistry, Analytical

Synthesis of mesoporous TiO2-based powders and their gas-sensing properties

GS Devi et al.

SENSORS AND ACTUATORS B-CHEMICAL (2002)

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Article Chemistry, Analytical

Preparation and gas-sensing properties of thermally stable mesoporous SnO2

T Hyodo et al.

SENSORS AND ACTUATORS B-CHEMICAL (2002)

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Article Chemistry, Analytical

Gas and humidity sensors based on iron oxide-polypyrrole nanocomposites

K Suri et al.

SENSORS AND ACTUATORS B-CHEMICAL (2002)

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Article Physics, Applied

NO gas sensor based on surface photovoltage system fabricated by self-ordered hexagonal mesoporous silicate film

HS Zhou et al.

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS (2001)

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Review Physics, Applied

Function and applications of gas sensors

D Kohl

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2001)

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Article Chemistry, Analytical

Monitoring of rancidity of milk by means of an electronic nose and a dynamic PCA analysis

S Capone et al.

SENSORS AND ACTUATORS B-CHEMICAL (2001)

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Article Chemistry, Analytical

Development of a polyaniline-based optical ammonia sensor

Z Jin et al.

SENSORS AND ACTUATORS B-CHEMICAL (2001)

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Article Chemistry, Analytical

Milk-sense: a volatile sensing system recognises spoilage bacteria and yeasts in milk

N Magan et al.

SENSORS AND ACTUATORS B-CHEMICAL (2001)

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Article Chemistry, Analytical

New miniaturized SAW-sensor array for organic gas detection driven by multiplexed oscillators

M Rapp et al.

SENSORS AND ACTUATORS B-CHEMICAL (2000)

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Article Chemistry, Analytical

Multi-parameter gas sensors based on organic thin-film-transistors

L Torsi et al.

SENSORS AND ACTUATORS B-CHEMICAL (2000)

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