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Design of transparent broadband double-sided absorbing metamaterial

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Optoelectronics Letters 2021年第8期17卷 459-463页

作者： ZHAO Yajuan ZHANG Guien LI Xin QIAN Mingcan no.33 research institute of china electronics technology group corporation Taiyuan 030006China

By designing the ordered structure on the key physical dimensions,metamaterial can obtain extraordinary physical *** method gives transparent conductive absorbing metamaterial with broadband and high *** this paper,a kind of absorbing metamaterial with indium tin oxide(ITO)glass substrate is *** design method of double-sided etched an open loop and linear metamaterial periodic structures is *** thickness of the absorbing metamaterial is 2.5 *** research shows that the working bandwidth is between 8.9 GHz and 17.4 GHz,the absorption rate is 90%,and the transmittance of visible light is 85% on *** absorbing metamaterial has wide application value to solve the problem of visualization and absorption characteristics.

关键词： absorbing sided transparent

Effects of carbon content on the microstructure and tensile properties of a low-density steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong Jiang Zhongwu Zhang Key Laboratory of Superlight Materials and Surface technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

A compact triple-band bandpass filter based on metamaterials

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Optoelectronics Letters 2016年第4期12卷 273-275页

作者：赵亚娟江波李宝毅王东红 Key Laboratory of Electromagnetic Protection Materials and technology of Shanxi Province No.33 Research Institute of China Electronics Technology Group Corporation

This paper presents a compact triple-band bandpass filter based on metamaterials. The miniaturization is realized by the principle of phase compensation of metamaterial. Compared with the conventional half-wavelength filter, the metamaterial filter has a small size of 10 mm×10 mm. The triple-band bandpass filter performance has been validated by the electromagnetic simulation software of high frequency structure simulator(HFSS). The results illustrate that the filter is designed with center frequencies of 2.4 GHz, 5.1 GHz and 8.8 GHz, bandwidths of about 7.9%(2.31—2.50 GHz), 7.8%(5.0—5.4 GHz) and 7.4%(8.50—9.15 GHz), respectively, and it shows good band pass characteristics.

关键词：带通滤波器通带特性紧凑型材料 GHz 波长滤波器滤波器设计补偿原理

A subwavelength metal-grating assisted sensor of Kretschmann style for investigating the sample with high refractive index

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Chinese Physics B 2016年第3期25卷 347-350页

作者：李旭峰彭伟赵亚丽王乔魏计林 School of Applied Science Taiyuan University of Science and TechnologyTaiyuan 030024China School of Physics and Optoelectronic technology Dalian University of TechnologyDalian 116024China no.33 research institute of china electronics technology group corporation Taiyuan 030024China

In this paper, a subwavelength metal-grating assisted sensor of Kretschmann style that is capable of detecting the sample with a refractive index higher than that of the substrate is proposed. The sensor configuration is similar to the traditional Kretschmann structure, but the metal film is pattered into a grating. As a TM-polarized laser beam impinges from the substrate, a resonant dip point in reflectance curve is produced at a certain incident angle. Our studies indicate that the sensing sensitivity and resolution are affected by the grating＇s gap and period, and after these parameters havelaeen optimized, a sensing sensitivity of 51.484°/RIU is obtained with a slightly changing resolution.

关键词： surface plasmons sensing finite-difference time-domain method

A compact tunable metamaterial filter based on split-ring resonators

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Optoelectronics Letters 2017年第2期13卷 120-122页

作者：赵亚娟周必成张泽奎张榕李宝毅 Key Laboratory of Electromagnetic Protection Materials and technology in Shanxi Province No.33 Research Instituteof China Electronics Technology Group Corporation Taiyuan 030006 China

A tunable metamaterial filter is designed based on split-ring resonators(SRRs) in this paper. The metamaterial filter has a compact size of 15 mm×20 mm, and miniaturization is realized by using the SRRs. By loading tunable devices, the continuous operation of the filter is realized at X band(from 10.7 GHz to 12 GHz), the bandwidth is about 13%, the minimum return loss is 35 dB, and the maximum insertion loss is 0.37 d B. The results illustrate that the metamaterial filter shows the compact size, wide bandwidth and good band pass characteristics.

关键词： tunable bandwidth illustrate return realized split resonator insertion dielectric symmetrical

Design of a double-layer high transmittance broadband graphene absorbing metamaterial

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Optoelectronics Letters 2022年第6期18卷 360-365页

作者： ZHAO Yajuan DONG Chunyu SANG Shuxiu DONG Jianyang XU Xiaoli WANG Yuexiang no.33 research institute of china electronics technology group corporation Taiyuan 030006China china-Belarus Joint Laboratory for Electromagnetic Environmental Effects Belt and RoadTaiyuan 030006China

In this paper,an optically transparent broadband absorbing metamaterial is designed for electromagnetic protection and stealth for visible parts of *** on the coupling resonance loss of double-lay metamaterial structure,the new absorbing material realizes broadband *** on the photoelectric compatibility characteristics of graphene thin films,the new absorbing material realizes high transmittance *** measured results show that when the absorbing rate is higher than 90%,the bandwidth of the absorbing metamaterial is 7.95—18.65 GHz,covering X-band(7.95—12 GHz)and Ku-band(12—18.65 GHz),and the visible light transmittance is 85%.The design and preparation of new absorbing material can solve electromagnetic compatibility(EMC)design problems of high transmittance and *** can be widely used in observation windows of ships,aircraft and reconnaissance control vehicle,display terminal of the information system.

关键词： absorbing double compatibility

A Simple Model for Measuring Refractive Index of a Liquid Based upon Fresnel Equations

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Chinese Physics Letters 2007年第11期24卷 3133-3136页

作者：张志伟武志芳温廷敦 Key Laboratory of Instrument Science and Dynamic Measurement (Ministry of Education) North University of China Taiyuan 030051 no.33 research institute China Electronic Technology Group Corporation Taiyuan 030006

Due to many experimental data required and a lot of calculations involved, it is very complex and cumbersome to model prism-based liquid-refractive-index-measuring methods. We develop a new method of mathematical modelling for measuring refractive index of a liquid based upon the Fresnel formula and prism internal reflection at an incident angle less than the critical angle. With this method, only two different concentrations measurements for a kind of solution can lead to the determination of computational model. Measurements are performed to examine the validity of the theoretical model. Experimental results indicate the feasibility of the theoretical model with an error of 1%. The method is also capable of measuring even smaller changes in the optical refractive index of the material on a metal surface by the surface plasma resonance sensing techniques.

关键词： coated conductor buffer layer self-epitaxy CeO2

Fast PARAFAC decomposition with application to polarization sensitive array parameter estimations

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Journal of Systems Engineering and electronics 2018年第4期29卷 714-722页

作者： LI Yang The 10th research institute China Electronics Technology Group Corporation

In tensor theory, the parallel factorization （PARAFAC）decomposition expresses a tensor as the sum of a set of rank-1tensors. By carrying out this numerical decomposition, mixedsources can be separated or unknown system parameters can beidentified, which is the so-called blind source separation or blindidentification. In this paper we propose a numerical PARAFACdecomposition algorithm. Compared to traditional algorithms, wespeed up the decomposition in several aspects, i.e., search di-rection by extrapolation, suboptimal step size by Gauss-Newtonapproximation, and linear search by n steps. The algorithm is ap-plied to polarization sensitive array parameter estimation to showits usefulness. Simulations verify the correctness and performanceof the proposed numerical techniques.

关键词： tensor decomposition parallel factorization(PARAFAC) alternating least squares (ALS) polarization sensi-tive array (PSA)

Growth of CdS crystals by the physical vapor transport method

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Journal of Semiconductors 2009年第10期30卷 17-20页

作者：程红娟徐永宽杨巍于祥潞严如岳赖占平 china electronics technology group corporation No.46 Research Institute

Based on the physical vapor transport （PVT） method, the growth of large-size CdS crystals inside a vertical semi-closed tube is studied. Firstly, in order to ensure 1D diffusion-advection transport, multi-thin tubes are used in the growth tube. The XRD spectra of the CdS crystal grown in this configuration indicates that the crystal quality has clearly been improved, where the FWHM is 58.5 arcsec. Secondly, theoretical and experimental growth rates under different total pressures are compared; the results show that the experiential growth rate equation is valid for our semi-tube growth, and it could be used to estimate the growth rate and maximum growth time under different total pressures.

关键词： CdS growth rate growth surface the saturated vapor pressure