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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)
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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)
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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)
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Chemistry, Analytical
Hao Chen et al.
Summary: In this study, the heat transfer performance of aeronautical materials at high temperatures was investigated using a quartz lamp to irradiate fused quartz ceramic materials. The surface temperature and heat flux distribution of the samples were measured, and the heat transfer properties of the materials were analyzed using a finite element method. The results showed that the fiber skeleton structure significantly affected the thermal insulation performance of the fiber-reinforced fused quartz ceramics, and the longitudinal heat transfer along the rod fiber skeleton was slower. The research provides important theoretical guidance for the heat insulation design of ultra-high acoustic velocity aircraft.
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Chemistry, Analytical
Fuyan Wu et al.
Summary: In this study, a solar absorber was created by superimposing three periodic Ti-Al2O3-Ti discs on a W-Ti-Al2O3 composite film structure. The physical process of achieving broadband absorption was investigated using the finite difference in time domain (FDTD) method. The results demonstrated that the absorber achieved an average absorption efficiency ranging from 95.8% to 96% over a wavelength range of 200 to 3100 nm.
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Runing Lai et al.
Summary: This paper introduces a novel metamaterial absorber based on surface plasmon resonance (SPR) that has triple-mode perfect absorption, polarization independence, incident angle insensitivity, tunability, high sensitivity, and a high figure of merit (FOM). The structure of the absorber consists of a graphene array, SiO2 layer, and a gold mirror. The absorber achieves perfect absorption at frequencies of 4.04 THz, 6.76 THz, and 9.40 THz, with absorption peaks of 99.404%, 99.353%, and 99.146%, respectively. It also demonstrates maximum sensitivities in refractive index sensing and has potential applications in photodetectors, optoelectronic devices, and chemical sensors.
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)
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Wei Liu et al.
Summary: A microstructured optical fibers (MOFs) biochemical sensor based on surface plasmon resonance (SPR) is proposed for simultaneous detection of analytes with different states in internal and external environments. The sensor utilizes a micro-polished dual-open-loop structure with anti-corrosive gold as the sensing layer to enhance the phase matching between fundamental mode and plasmonic mode for SPR effect. Numerical simulations reveal the better sensing properties of the even mode for ypolarized state. The sensor demonstrates high wavelength sensitivity and amplitude sensitivity in the operable infrared region, with the capability of detecting a wide range of gas and liquid analytes.
RESULTS IN PHYSICS
(2023)
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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.
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Zihao Chen et al.
Summary: In this paper, the perfect absorption of the absorbent is achieved by using the surface plasmon resonance (SPR) method. A multi-frequency broadband absorber based on graphene SPR is proposed, which uses the continuous resonance of patterned graphene to achieve multi-frequency broadband absorption. The proposed structure model has potential value for application in terahertz photoelectric detection, filtering, and electromagnetic shielding.
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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
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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
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Thermodynamics
Shiri Liang et al.
Summary: In this paper, an intelligent thermal controlled radiation emitter based on Vanadium Dioxide is studied, which can switch between high-temperature heat dissipation and low-temperature heat preservation. It exhibits effective thermal control performance and holds significant prospects for applications in various fields.
APPLIED THERMAL ENGINEERING
(2023)
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Thermodynamics
Ying Zheng et al.
Summary: In this study, a solar absorber and thermal emitter with ultra-broadband perfect absorption and high thermal radiation efficiency were designed. The absorber achieved a high absorption efficiency of 91.5% in the entire wavelength range and an average absorption efficiency of 99% in the selected range. The structure also exhibited excellent performance as a thermal emitter, with an optimal working temperature of 2000 K and a thermal radiation efficiency of 94.8%.
APPLIED THERMAL ENGINEERING
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Energy & Fuels
Feng Qin et al.
Summary: The effect of double hole layer on the performance of PSCs was analyzed by theoretical calculation, and an optimized structure of PSCs was proposed. The addition of a CuO hole layer with an energy gap of 1.5 reduced direct recombination and increased FF, while Spiro-OMeTAD reduced electron recombination and increased Jsc. The proposed structure increased the PCE from 16.82% to 21.82%.
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Chemistry, Analytical
Yanying Zhu et al.
Summary: Due to the permanent damage caused by the use of chemical fuels, there is an urgent need for new energy sources. This study proposes a six-layer composite ultra-wideband high-efficiency solar absorber with an annular microstructure, which utilizes the properties of metamaterials and semiconductor materials. The absorber demonstrates high absorption rates in multiple spectral bands, excellent thermal radiation efficiency, and outstanding performance in various applications.
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Chemistry, Physical
Wenxin Li et al.
Summary: In this paper, a terahertz selective active electromagnetic frequency absorption film based on single-layer graphene is proposed. The film achieves high electromagnetic wave absorption rate at 2.4-4 THz and 7-8.6 THz in the THz band. The study analyzes the relative impedance parameter inversion and the absorption mechanism of the film, and introduces five absorption modes. The film has strong application value in aerospace, military, medical, and other fields.
SURFACES AND INTERFACES
(2023)
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Zhipeng Zheng et al.
Summary: A thermally tunable terahertz window has been proposed, which combines a metamaterial and the phase change material VO2. By controlling temperature, the window can regulate the absorption and transmission of terahertz waves. The window exhibits excellent performance in terms of absorbance and transmittance. It is also insensitive to polarised waves and maintains flexibility over a wide angular range.
DALTON TRANSACTIONS
(2023)
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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)
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Chemistry, Physical
Haonan Qi et al.
Summary: In this paper, a switchable and tunable functional metamaterial device based on hybrid graphene-vanadium dioxide (VO2) is proposed. By utilizing the metal-insulator transition properties of VO2, the proposed metamaterials can switch between tunable circular dichroism (CD) and dual-band perfect absorption in the terahertz region. The operation mechanism behind the phenomena can be explained by utilizing the electric field distribution and the coupled mode theory. The proposed switchable and tunable metamaterial provides a platform for designing versatile functional devices in the terahertz region.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
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)
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Engineering, Multidisciplinary
Jun Peng et al.
Summary: This paper proposes an optical fiber sensor for magnetic field measurement using a fiber Bragg grating (FBG) and a magnetostrictive composite. The sensor has a high sensitivity and good repeatability, and it responds quickly to dynamic magnetic fields. The optical fiber sensor has the inherent advantage of immunity to electromagnetic interference and has great potential in power engineering applications.
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)
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Chemistry, Analytical
Zhou-hao Zhao et al.
Summary: This paper presents a highly sensitive SPR fiber sensor based on gold nanoparticle/graphene oxide heterostructures and gold film coupling enhancement. The theoretical analysis and experimental results demonstrate that the sensor can significantly enhance the coupling, local electric field, and depth of electric field propagation of surface plasmon polaritons, while improving the sensitivity of the sensor.
INSTRUMENTATION SCIENCE & TECHNOLOGY
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Sanfeng Gu et al.
Summary: In this study, a photonic crystal fiber sensor based on surface plasmon resonance is designed to measure magnetic field and temperature simultaneously. By designing specific channel structures and coating materials, the information of magnetic field and temperature can be separated. The performance of the sensor is evaluated through numerical simulations, and the sensor overcomes the cross-sensitivity problem effectively.
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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
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Optics
Dongying Wang et al.
Summary: A surface plasmon resonance (SPR) sensor made of photonic crystal fiber (PCF) is designed for dual-parameter sensing of magnetic field and temperature. The sensor effectively detects magnetic field and temperature by coating the two open ring channels with gold and silver layers and filling them with magnetic fluid (MF) and Polydimethylsiloxane (PDMS). The sensor exhibits high sensitivity and special sensing performance, making it suitable for solving cross-sensitivity and demodulation issues in dual-parameter sensing.
Article
Optics
Bin Tang et al.
Summary: This paper demonstrates a polarization-controlled and symmetry-dependent multiple plasmon-induced transparency in a graphene-based metasurface. The phenomena can be actively modulated by adjusting the polarization and displacement of the nanostructures, and the mechanism behind it is attributed to the near-field coupling and electromagnetic interaction. The designed metasurface shows potential applications in mid-infrared optoelectronic devices.
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.
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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
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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
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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)
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Bin Tang et al.
Summary: This paper proposes an actively tunable and switchable multi-functional terahertz metamaterial device based on a hybrid vanadium dioxide (VO2)-graphene integrated configuration. The functions of the device can be reversibly switched between asymmetric transmission and two different polarization conversions by transiting the phase of VO2. The performance of the device can be actively controlled by adjusting the geometrical parameters and Fermi energy of graphene.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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Bin Tang et al.
Summary: This paper demonstrates a polarization-controlled dynamically tunable EIT-like effect based on graphene metasurfaces. By adjusting the graphene structure, transparent windows can be switched and adjusted in different polarization directions, providing a new solution for applications such as slow light, optical sensors, and filters.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
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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.
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Gongli Xiao et al.
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Jia-Kai Wang et al.
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Zhongpeng Jia et al.
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Yi Ren et al.
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