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Article
Optics
Shiri Liang et al.
Summary: This study achieves wideband absorption in the long wavelength infrared range using a metamaterial absorber based on nanowire cross surrounding. The absorber has polarization independence and high absorptivity in the LWIR band, which can be adjusted by changing the geometric parameters. It is suitable for infrared imaging, thermoelectronic devices, and thermal detection applications.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yuhui Li et al.
Summary: A periodic patterned graphene-based terahertz metamaterial with three transverse graphene strips and one longitudinal continuous graphene ribbon is proposed to achieve a dynamically tunable quadruple plasmon-induced transparence (PIT) effect. The magnetic field distribution along the x-direction leads to the destructive interference between the bright mode and the dark mode, resulting in the quadruple-PIT window. The numerical and theoretical analysis shows that the spectral response characteristics obtained by FDTD simulation and CMT calculation match well.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Wanlai Zhu et al.
Summary: To improve optical fiber sensing performance and broaden its application, a photonic crystal fiber (PCF) plasmonic sensor with a U-shaped channel based on surface plasmon resonance (SPR) is proposed in this study. The influence rules of structural parameters, such as the radius of the air hole, the thickness of the gold film, and the number of U-shaped channels, were investigated using COMSOL and the finite element method. The dispersion curves, loss spectrum, and electric field intensity distribution were studied under various conditions. The proposed sensor achieved a maximum refractive index sensitivity of 24.1 mu m RIU-1 in the RI range of 1.38-1.43, with a FWHM of 10.0 nm, a FOM of 2410 RIU-1, and a resolution of 4.15 x 10(-6) RIU. The sensor combines the highly sensitive SPR effect and allows for real-time detection of the external environment. The detection range and sensitivity can be increased by adjusting the structural parameters. The sensor has a simple structure and excellent performance, providing a new approach for real-time detection and highly integrated sensing.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
Wenxin Li et al.
Summary: In this paper, an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed. It shows high absorption and excellent physical regulation in the range of 3.7 THz-8 THz when the Fermi energy (E-f) of graphene is 1.5 eV. The absorber exhibits superior tunability by adjusting physical parameters and E-f, and it is also polarization independent and insensitive to the incident angle.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Zhibin Ye et al.
Summary: In this research, a simple tunable absorber based on graphene with tunable Fermi level was designed to solve the unadjustability of traditional noble metal absorbers in meeting complex application requirements in the actual electromagnetic environment. The performance of the absorber was theoretically simulated using the finite difference time domain (FDTD) method. The proposed absorber exhibited two perfect absorption peaks with high efficiency in its working band (90-155 μm). The absorber's absorption frequency can be adjusted through controlling the relaxation time and Fermi level of graphene or changing the refractive index of the medium. The proposed absorber has the potential to adapt to different electromagnetic environments and can be flexibly regulated in practical applications, opening up new possibilities for various fields such as detection and communication.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Yuanjian Zhang et al.
Summary: In this paper, we propose and optimize an ultra-wideband solar absorber based on Ti-Al2O3 cross elliptical disk arrays, which has the characteristics of ultra-wideband absorption of solar energy and insensitivity to polarization and incident angles. The absorption spectrum and field distribution are analyzed, and the results demonstrate that the absorption bandwidth with the absorption rate beyond 90% reaches 1380 nm (385-1765 nm), and the average absorption reaches an astonishing 98.78%. The proposed ultra-wideband solar absorber is insensitive to the polarization angle and oblique incidence angle, and has research and application value in solar energy harvesting, photothermal conversion, and utilization.
Article
Engineering, Environmental
Xiangsi Wu et al.
Summary: This study presents a method to prepare mixed-valence cobalt oxide with regulatable ratio by introducing air at a certain temperature. The resulting nanosphere-shaped material shows multiple heterointerfaces and rich oxygen vacancies, exhibiting exceptional oxygen reduction reaction and oxygen evolution reaction activity. This material also performs well in zinc-air batteries and magnesium-air batteries, with excellent electrochemical performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xiuting Wu et al.
Summary: This study demonstrates a novel cathode material, ZnVO-800, derived from zeolitic imidazolate framework-8 (ZIF-8) by a self-sacrificed route. The ZnVO-800 cathode exhibits outstanding electrochemical performance, with high reversible capacity and excellent cycleability in aqueous zinc ion batteries. The electrochemical mechanism involves the transformation of ZnVO-800 into ZnxV2O5·nH(2)O with high electrochemical activity through in-situ electrochemical activation process, and the heterojunction with hierarchical structure enhances the dynamics and long-term cycleability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Wenxin Li et al.
Summary: In this research, a tunable broadband absorber based on a layered resonant structure was designed, which achieved high absorption (more than 0.9) in the frequency range of 18-28 THz. The high absorption was attributed to strong resonance absorption between the layers and the resonance of the localised surface plasmon. The absorber, consisting of three layers of Dirac semimetal and three layers of optical crystal plates on a gold substrate, also showed tunability and absorption stability.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Physics, Applied
Yuhui Li et al.
Summary: A monolayer graphene metamaterial has been proposed to generate quadruple plasmon-induced transparency (PIT) in the terahertz frequency range. The structure shows promising potential for tunable multi-frequency switches and excellent optical storage.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Xiangsi Wu et al.
Summary: In this study, Co, N-dual doped carbon catalyst (Co/NNC) was successfully prepared using a combination approach of SiO2 template and extra nitrogen source. The catalyst exhibited excellent electrocatalytic performance in the oxygen reduction reaction and was employed in zinc-air and magnesium-air batteries, showing outstanding performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Fei Zhao et al.
Summary: In this work, the performance of c-Si/ZnO heterojunction ultrathin-film solar cells is enhanced by an integrated structure of c-Si trapezoidal pyramids on the top and Al pyramids in the active layer. The top c-Si pyramid increases absorption of short wavelengths and the bottom Al pyramid improves overall optical absorption, resulting in a high absorption rate of 93.16%. The optimized current density and conversion efficiency of the solar cells are 41.94 mA cm(-2) and 18.97%, respectively. The solar cells show good absorption in a wide range of incident angles and the electric field intensity profile demonstrates excellent light-trapping performance.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Zhipeng Zheng et al.
Summary: This study proposes a terahertz metamaterial absorber that combines metamaterial structures and a VO2 film. Flexible switching of absorption performance and an ultra-broadband perfect absorption with a bandwidth of 3.3 THz can be achieved through temperature adjustment. The study also highlights the wide thermal tuning range of spectral absorbance.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Qianyi Shangguan et al.
Summary: This research proposes a belfry-typed absorber sensor with a simple structure and high refractive index sensitivity and response speed. The absorber modes can be regulated by controlling the properties of graphene. The absorber has high application value in photoelectric detection, switching, and imaging.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Electrochemistry
Yuyu Liu et al.
Summary: This paper presents the fabrication of a novel photoanode based on a semiconductor composite and tests its performance in QDSSCs. The experimental results show that the new photoanode exhibits better charge transfer and reaction rates, as well as higher photocurrents and power conversion efficiencies. After interface modification, the cell efficiency is further improved.
ELECTROCHIMICA ACTA
(2022)
Article
Optics
AmirHossein Norouzi Razani et al.
Summary: This study presents an ultra-sensitive sensor based on a flower-shaped graphene resonator, showing high absorption rate and frequency shift, making it suitable for biomedical sensing applications, particularly in early cancer detection.
OPTICS COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Xianwen Zhou et al.
Summary: This study proposes a novel bilayer graphene terahertz metamaterial for achieving a dynamically adjustable plasma-induced transparency effect. By adjusting the Fermi levels of graphene, excellent performance in multi-frequency optical switching and slow-light effects has been achieved.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Optics
Ilghar Rezaei et al.
Summary: This study presents a three layers graphene-based THz absorber composed of multi-bias graphene ribbons. The structure is described using an equivalent circuit model and design methodology is developed via impedance matching concept. The proposed device shows both narrow multi band and wide band absorption over a frequency range from 0.1 THz to 5 THz.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Qianyi Shangguan et al.
Summary: In this paper, a three-band active adjustable perfect absorber with multiple advantages, such as multi-band perfect absorption, active adjustability, and high refractive index sensitivity, is proposed. The absorber exhibits good and stable sensing performance and has specific applications in the medical field.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Meisam Esfandiari et al.
Summary: This paper provides an operational perspective of advanced graphene-based electromagnetic devices, focusing on graphene-enabled antennas, absorbers, and sensors in the terahertz frequency range. It analyzes the strengths and limitations of various design methodologies.
MATERIALS & DESIGN
(2022)
Article
Engineering, Electrical & Electronic
Seyed Amin Khatami et al.
Summary: In this article, a quad-band perfect classical absorber in the terahertz band has been achieved. The proposed structure has four perfect absorption bands with an average absorption of 98.22% at frequencies of 1.36, 2.6, 3.68, and 4.36 THz. The absorption mechanism is explained using an equivalent circuit, and the increase in absorption percentage due to the loss of the middle layer is demonstrated. The absorber has potential applications in imaging, selective sensing, and photodetector fields.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Analytical
Qianyi Shangguan et al.
Summary: The paper proposes an ultra-narrow band graphene refractive index sensor with high absorption efficiency, adjustability, and sensitivity, which can be applied to photon detection in the terahertz band and biochemical sensing.
Article
Chemistry, Physical
Fang Tang et al.
Summary: In this study, a MnS/MnO@N-CF composite was synthesized to improve the electrical conductivity and reaction kinetics of manganese-based materials for aqueous zinc ion batteries. The composite exhibited a high specific discharge capacity and superior cycleability, making it a promising cathode material for such batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zi Wang et al.
Summary: A semiconductor oxide composite consisting of ZnO nanorods and ZnO inverse opal was fabricated and used in the photoanode of QDSSCs. The study found that the pore size of the ZnO inverse opal in the composite greatly affects the performance of the QDSSCs.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Mohammad-Reza Nickpay et al.
Summary: In this paper, a tunable triple-band absorption-based refractive index (RI) sensor with a combined graphene pattern in the terahertz (THz) band is proposed. The sensor shows three narrow absorption peaks at specific frequencies due to the surface plasmon resonance (SPR) phenomenon of graphene. The performance and resonance frequencies can be adjusted by applying an external DC-bias voltage to the graphene.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xingyu Wang et al.
Summary: This paper proposes a tunable sensing detector based on Bulk Dirac semimetals, which can realize frequency regulation and multi-frequency controllable sensing by adjusting the Fermi level of the semimetals. The detector exhibits high absorption rate, angular insensitivity, and high sensitivity, making it important for applications such as space detection and high-sensitivity biosensing detection.
Article
Chemistry, Physical
Dongying Wang et al.
Summary: In this paper, a dual-parameter sensor based on SPR-PCF is proposed for detecting magnetic field and temperature. The sensor has a unique structure and excellent sensing performance, which is important for simultaneous sensing of multiple basic physical parameters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yuting Li et al.
Summary: This research developed a stable CaF2 protective layer to address the issues of dendritic growth and side reactions in zinc ion batteries. The CaF2 layer exhibited excellent performance, resulting in an ultra-long cycle life and high capacity retention in Zn ion batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Zhipeng Zheng et al.
Summary: A novel and structurally simple multifunctional broadband absorber is presented, using the thermogenic phase change properties of vanadium dioxide material to flexibly adjust absorption intensity and achieve near-perfect absorption in an ultra-broadband range.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Hao Chen et al.
Summary: This paper proposes a multi-mode surface plasmon resonance absorber based on dart-type single-layer graphene, which has the advantages of polarization independence, tunability, high sensitivity, and high figure of merit. The absorption effect and resonant wavelength can be dynamically tuned by adjusting the numerical values of the single-layer graphene array's structure and chemical potential.
Article
Multidisciplinary Sciences
Sindokht Cyrus et al.
Summary: A multi-layer absorber using multi-bias arrays of graphene is proposed, achieving wide-band and multiband absorption through an optimization process. The device shows high absorption performance and acceptable sensitivity, with response dependency to various parameters analyzed. Such reconfigurable absorber is in demand for applications such as medical imaging and indoor communication.
Article
Optics
Iman Chaharmahali et al.
Summary: A unique THz wave absorber is presented in this study, utilizing both concept and method, with three layers including dielectric and graphene patterns for zero wave transmission. The structure incorporates dual bias scheme for periodic arrays of graphene ribbons and disks, while modeled as passive circuit elements for exclusive impedance calculation. Through impedance matching theory, perfect dual-band absorption at 5.5THz and 8.5THz frequencies is achieved by tuning structure parameters. Ample simulations confirm the robustness of the structure and the capability of tuning absorption peaks through chemical potentials variation.
Article
Energy & Fuels
Ling Zhu et al.
Summary: The study focuses on enhancing the performance of lithium-sulfur batteries using acetylene black/sulfur composites and in-situ polymerization of polypyrrole, leading to excellent cycle stability and rate adaptability through advantages such as providing abundant micropores, a 3D conductive matrix, and promoting ion migration.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Pouria Zamzam et al.
Summary: This paper presents a quad-band, polarization-insensitive metamaterial perfect absorber based on bi-layer graphene. By stacking the double layer graphene metasurface, a quad-band perfect absorber with an average absorption of 99.43% at four different frequencies is achieved. The proposed structure has advantages of tunable resonant frequency, polarization insensitivity, and tolerance to incident angles, showing potential in filtering, detection, imaging, and photodetector applications.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Masoud Soltani-Zanjani et al.
Summary: The paper presents a comprehensive design methodology for graphene-based multi-layers structures, utilizing multiple bias schemes and different graphene patterns to enhance adjustability and complexity of the device. Optimization is conducted using a weighted binary matrix, leading to a more in-depth control over device behavior. Validation is performed through circuit model formulations and Finite Element Method simulations for a unique three layers device.
RESULTS IN PHYSICS
(2021)
Article
Physics, Condensed Matter
Tao Chen et al.
Summary: This paper proposes a dual-band tunable absorber with a graphene-dielectric-metal structure as a sensor in the terahertz region, which achieves resonance frequency adjustment by tuning the chemical potential of graphene and exhibits polarization and angle insensitivity. Simulation results demonstrate the structure's maximum sensitivity, Q factor, and figure-of-merit, indicating promising applications in biomedical diagnosis and environmental monitoring.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Jinping Tian et al.
Summary: A classic three-layer metamaterial absorber is designed for quad-band perfect absorption, with four absorption bands occurring in the 3-11 THz frequency range. Tuning of absorption properties can be achieved by adjusting the Fermi level or relaxation time of graphene, and the absorber is independent of the polarization of the input electromagnetic wave.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
Xianglong Wu et al.
Summary: The designed four-band terahertz absorber, utilizing Dirac semi-metallic metamaterial and microstructure design, achieves an absorption rate of over 93%, with more than 95% perfect absorption rate. The physical mechanism of the absorber is analyzed in detail using theories like localized surface plasmon resonance and impedance matching, showcasing excellent polarization insensitivity. This absorber has great potential in the fields of bio-chemical sensing and special environmental detection.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Gaurav Varshney et al.
Summary: The study focuses on enhancing the performance of terahertz absorbers by utilizing surface plasmons at the graphene dielectric interface, creating higher order surface plasmons through charge trapping mechanism, and providing dual-band resonance absorption with perfect absorption effects.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Physical
Fengqi Zhou et al.
Summary: The study introduces an ultra-wideband solar energy absorber composed of Ti ring and SiO2-Si3N4-Ti thin films, with absorption efficiency exceeding 90% and high absorptivity peaks. It maintains absorption efficiency above 90% at various polarization and incidence angles, showing great potential for wide-ranging applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Sadegh Biabanifard
Summary: The THz wave absorber is designed with a unique concept and method to ensure zero transmission of THz waves through the structure. It incorporates multiple layers and arrays of graphene patterns, modeling them with a circuit model approach for precise impedance calculation and device behavior prediction. By tuning the structural parameters using impedance-matching theory, perfect dual-band absorption is achieved at frequencies of 5.5 and 8.5 THz with the ability to robustly tune absorption peaks.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Article
Optics
Alireza Najafi et al.
Article
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Weiwen Meng et al.
ADVANCED POWDER TECHNOLOGY
(2020)
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CHEMICAL ENGINEERING JOURNAL
(2020)
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JOURNAL OF COMPUTATIONAL ELECTRONICS
(2020)
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Kai-Da Xu et al.
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Masoud Soltani Zanjani et al.
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Kamran Jafari Jozani et al.
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IEEE SENSORS JOURNAL
(2019)
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Jun Li et al.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
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Sadegh Biabanifard et al.
OPTICS COMMUNICATIONS
(2018)
Article
Chemistry, Physical
Xianwen Wu et al.
JOURNAL OF POWER SOURCES
(2016)
Article
Optics
Elena A. Velichko
Article
Chemistry, Physical
Xianwen Wu et al.
JOURNAL OF POWER SOURCES
(2015)
Article
Optics
Runmei Gao et al.
OPTICS COMMUNICATIONS
(2015)
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Rasoul Alaee et al.
Article
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Na Liu et al.
ADVANCED MATERIALS
(2008)
Article
Physics, Multidisciplinary
N. I. Landy et al.
PHYSICAL REVIEW LETTERS
(2008)
Article
Multidisciplinary Sciences
R. R. Nair et al.
