Article
Chemistry, Analytical
Madhuka V. Liyanage, Robert A. Latour, George Chumanov
Summary: Nanocomposite films containing silver nanoparticles separated by thin polymer layers were fabricated using different methods. The films exhibited changes in electrical conductivity when exposed to moist ammonia and water vapors. The conductivity changes were attributed to hydrogen bonding and direct adsorption. Drop casting method on nylon filter membranes resulted in the most reproducible films. The films with polyvinylpyrrolidone polymer layers showed a low limit of detection for ammonia in the presence of interfering water vapor. The films could be developed as ammonia sensors for environmental and biomedical applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Pengqi Gong, Xuegang Li, Qiming Zhao, Xue Zhou, Yanan Zhang, Yong Zhao
Summary: In this paper, a multiparameter DNA hybridization sensor with temperature and pH detection channels based on a fiber-based triple surface plasmon resonance (Triple-SPR) effect is demonstrated. The innovation of this paper lies in the independent temperature and pH testing channels implemented based on a single fiber optic structure, and the high sensitivity DNA hybridization detection channel. Polydimethylsiloxane and self-assembled materials are used for the real-time detection of temperature and pH. After the modification of probe DNA, the selective detection of complementary DNA is achieved. The advantages of multi-parameter independent detection, high sensitivity, and fast response of the fiber-based Triple-SPR sensing technology are of great significance in future multi-parameter sensing, compensated detection, and real-time bio-monitoring applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Kaiyue Han, Yang Li
Summary: In this study, a self-standing high performance flexible capacitive humidity sensor was developed using a composite of polyimide aerogel and graphene oxide. The sensor demonstrated high sensitivity and stability, and could monitor respiration and finger movement while also detecting water content in liquids.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weidong Qin, Junhua Wang, Zhanqiu Tang, Hongyuan Tian, Zhenglong Wu
Summary: Researchers have discovered a rapid and efficient method for immobilizing DNA on gold nanoclusters (AuNCs) using tris(2carboxyethyl)phosphine (TCEP). They have also successfully fabricated a core-shell-satellite nanocomposite for simultaneous detection of microRNA-21 and microRNA-141.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Zhang, Hong Lei, Jiachong Li, Xiaoyan Wang, Hui Yan
Summary: In this study, we proposed a dual signal enhancement strategy for the highly sensitive detection of microRNAs using a fiber optic localized surface plasmon resonance sensor. The method involved the construction of a multimer structure and catalytic amplification to capture and detect miR-103. The sensor demonstrated high specificity, repeatability, and reproducibility, and was successfully validated with real samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Chen Meng, Yunhai Chen, Dianwei Zhang, Huilin Liu, Baoguo Sun
Summary: In this study, a novel COFs(azide)@BAs material was prepared for the adsorption of urea and indirect control of EC in Huangjiu processing. The material exhibited a low detection limit for urea and satisfactory removal efficiency for EC, showing great potential for application in food safety control.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Naveen Kumar Arkoti, Kaushik Pal
Summary: Stable and selective gas sensing is crucial for detecting toxic gases and preventing gas leak accidents. In this study, borophene is identified as a potential material for NO2 gas sensing, while a polyetherimide-zeolitic imidazole framework mixed matrix membrane is used as a selective gas separation membrane. Experimental results demonstrate that the fabricated sensors exhibit stable and reliable detection performance for NO2 gas at varying concentrations.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Shuguo Yu, Chu Chen, Peng Li, Hongyan Zhang, Haiyang Zhang
Summary: A highly sensitive and stable Ti3C2Tx MXenes-RGO humidity sensor was developed for real-time respiratory monitoring. The sensor exhibits high sensitivity, low humidity hysteresis, short response/recovery time, and good stability and repeatability.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Mengke Wang, Yaqing Han, Rui Huang, Zhonghao Wang, Guannan Wang
Summary: The confinement effect of AuNCs@HDS significantly improves the fluorescence properties of AuNCs and enables versatile fluorescent sensing strategy for bio-enzymes.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Junfeng Zhang, Kai Sun, Jiangtao Ren, Han Wang, Jing Cheng
Summary: A metallic nanowire aptasensor with high sensitivity and short detection time was developed for the early diagnosis and prognostic monitoring of heart failure by detecting cardiac troponin I (cTnI). The sensor exhibited excellent detection performance, including high sensitivity, short detection time, high specificity, and good reproducibility, making it a potential application in portable devices for continuous monitoring of cardiomyocyte injury.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jing-Yu Zhao, Gang Zhang, Hao-Chi Hao, Ru Sun, Yu-Jie Xu, Jian-Feng Ge
Summary: This study presents the discovery of mitochondria probes for real-time monitoring of mitophagy process. The probes showed excellent fluorescence performance and targeting capability, and were able to detect changes in mitochondrial viscosity. These probes have significant potential for investigating dynamic pathological processes related to mitophagy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Marc Clua Estivill, Adil Ait Yazza, Pascal Blondeau, Francisco J. Andrade
Summary: This study presents the development and optimization of a paper-based ion-selective organic electrochemical transistor (IS-OECT) with remarkable analytical performance. The device combines thick-film transistor technology, optimal ion-selective membrane composition and thickness to achieve high sensitivities and good selectivity for detecting potassium concentrations in blood.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Han Lu, Dan Wang, Guangfei Huang, Qilin Ma, Yuan Zhang, Mingliang Jin, Lingling Shui
Summary: Surface-enhanced Raman spectroscopy (SERS) has great potential in DNA analysis, but the identification of single-base mutations is still limited. In this work, plasmonic SiNW arrays decorated with Ag nanoparticles (SiNW@AgNP arrays) were developed to address these challenges, showing excellent sensitivity and reproducibility. Under optimized conditions, SiNW@AgNP arrays enable the detection of DNA bases and the discrimination of gene mutations.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Biophysics
Kyung Ho Kim, Eunsu Ryu, Zinah Hilal Khaleel, Sung Eun Seo, Lina Kim, Yong Ho Kim, Hyun Gyu Park, Oh Seok Kwon
Summary: We have developed a novel strategy for discriminative detection of SARS-CoV-2 variants using the plasmonic photothermal effect of gold nanofilms and digital polymerase chain reaction (dPCR) technology. With this method, we were able to detect the delta and omicron variants with high sensitivity within 25 minutes from COVID-19 patients' clinical samples, making it a rapid and accurate point-of-care testing tool.
BIOSENSORS & BIOELECTRONICS
(2024)
Article
Chemistry, Analytical
Gianni Antonelli, Arianna Mencattini, Micol Massimiani, Valentina Lacconi, Joanna Filippi, Margherita Losardo, Michele 'Orazio, Paola Casti, Mario Bragaglia, Giorgia Curci, Francesca Nanni, Luisa Campagnolo, Eugenio Martinelli
Summary: Lab-On-Chips (LOCs) offer advantages in studying biological models and evaluating drug efficacy. This research presents a cost-effective technique to integrate optical biosensors into the lab-on-chip and successfully measures pH in human embryonic stem cell cultures, advancing the understanding of cell-scale metabolic mechanisms.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Chen Dong, Jingrong Xiong, Yeran Wang, Jing Liang, Chenlong Yan, Huiming Lv, Jingjing Zhang, Chunyuan Song, Lianhui Wang
Summary: In this study, a DNA walker-powered SERS logic aptasensor was proposed for accurate identification of tumor cells. The aptasensor can sensitively and specifically image membrane proteins on single live cells, enabling logical analysis for cancer cell classification and subtypes.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Kun-Hao Luo, Yu-Han Hung, Aamna Bibi, Yi-Min Li, Chuan Hu, Jui-Ming Yeh
Summary: This study focuses on the synthesis and utilization of a novel biomimetic material, Bio-PANI, for H2S gas sensing applications. The Bio-PANI coating exhibits a larger specific surface area and better electrochemical performances compared to conventional PANI coating. The Bio-PANI-coated sensor shows higher response and better stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yuwei Wu, Min Yu, Chengbo Tian, David Vokoun, Runqi Hu, Hengzao Ge, Hao Zhang, Ivo Stachiv
Summary: This study proposes a new method for fabricating PVC gel using a thermal melting approach, which significantly improves its actuation performance while reducing fabrication time and cost.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Mengxu Sun, Yanxin Zhang, Juan Xie, Ya Zhang, Ting Huang, Minmin Li, Jin-Xiang Chen, Zong Dai, Jun Chen
Summary: This study developed a highly efficient and sensitive miRNA detection method by combining APE1-mediated isothermal target cycling amplification system with magnetic separation. The label-free and rapid detection of miRNA was achieved through the recognition and cleavage of AP probes by APE1, and the fluorescence measurement of G4/ThT. The method showed high specificity and sensitivity, and demonstrated its application in detecting miR-1246 in serum samples from breast cancer patients and normal people.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Junhyun Park, Seongmin Ha, Jaejeung Kim, Jae-Woo Song, Kyung-A. Hyun, Tohru Kamiya, Hyo-Il Jung
Summary: In this study, a hybrid algorithm was developed for accurate classification of CTC clusters without immunofluorescence staining, providing a powerful tool for cancer diagnosis and prognosis.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
