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Few-layer metasurfaces with arbitrary scattering properties

Science China(Physics,Mechanics & Astronomy) 2020年第8期63卷 2-13页

作者： Zhancheng Li Wenwei Liu Hua cheng shuqi chen The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Institute of Applied PhysicsRenewable Energy Conversion and Storage CenterNankai UniversityTianjin 300071China The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China

Metasurfaces,which are planar arrays of subwavelength artificial structures,have emerged as excellent platforms for the integration and miniaturization of electromagnetic devices and provided ample possibilities for single-dimensional and multi-dimensional manipulations of electromagnetic ***,owing to the limited interactions between planar thin metallic nanostructures and electromagnetic waves as well as intrinsic losses in metals,metasurfaces exhibit disadvantages in terms of efficiency,controllability,and *** advances in this field show that few-layer metasurfaces can overcome these ***-layer metasurfaces composed of more than one functional layer enable more degrees of design ***,they possess unprecedented capabilities for electromagnetic wave manipulation,which have considerable impact in the area of *** article reviews recent advances in few-layer metasurfaces from the viewpoint of their scattering *** scattering matrix theory is briefly introduced,and the advantages and drawbacks of few-layer metasurfaces for the realization of arbitrary scattering properties are ***,a detailed overview of typical few-layer metasurfaces with various scattering properties and their design principles is ***,an outlook on the future directions and challenges in this promising research area is presented.

关键词： few-layer metasurfaces light-matter interaction scattering matrix full-space manipulation

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Few-layer metasurfaces with engineered structural symmetry

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Science China(Physics,Mechanics & Astronomy) 2021年第6期64卷 125-126页

作者： Zhancheng Li Hua cheng shuqi chen Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Institute of Applied PhysicsNankai UniversityTianjin 300071China The Collaboraive Innovation Center of Extreme Optics Shanxi UnjversityTaiyuan 030006China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China

Metasurfaces are planar arrays composed of artificial nanostructures at the subwavelength *** the first demonstration of their excellent capacity in the phase manipulation of optical waves,metasurfaces have attracted increasing attention in optics and other disciplines,with extraordinary progress over the past *** unique capabilities of metasurfaces in the multidimensional manipulation of optical waves have made them versatile and powerful platforms for integrating and minimizing optical devices[1,2].

关键词： surfaces symmetry versatile

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Dirac points and the transition towards Weyl points in three-dimensional sonic crystals

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Light(Science & Applications) 2020年第1期9卷 36-44页

作者： Boyang Xie Hui Liu Hua cheng Zhengyou Liu Jianguo Tian shuqi chen The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of PhysicsTEDA Institute of Applied Physicsand Renewable Energy Conversion and Storage CenterNankai University300071 TianjinChina The Key Laboratory of Artificial Micro-and Nanostructures of the Ministry of Education and School of Physics and Technology Wuhan University430072 WuhanChina The Collaborative Innovation Center of Extreme Optics Shanxi University030006 TaiyuanShanxiChina The Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal University250358 JinanChina

A four-fold-degenerate three-dimensional(3D)Dirac point,represents a degenerate pair of Weyl points carrying opposite ***,3D Dirac crystals have shown many exotic features different from those of Weyl *** these features evolve from 3D Dirac to Weyl crystals is important in research on 3D topological ***,we realized a pair of 3D acoustic Dirac points from band inversion in a hexagonal sonic crystal and observed the surface states and helical interface states connecting the Dirac ***,each Dirac point can transition into a pair of Weyl points with the introduction of chiral *** exotic features of the surface states and interface states are inherited by the resulting Weyl *** work may serve as an ideal platform for exploring exotic physical phenomena in 3D topological semimetals.

关键词： Dirac degenerate topological

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Acoustic spin-1 Weyl semimetal

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Science China(Physics,Mechanics & Astronomy) 2020年第8期63卷 101-106页

作者： WeiYin Deng XueQin Huang JiuYang Lu Feng Li JiaHong Ma shuqi chen ZhengYou Liu School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China Key Laboratory of Artificial Micro-and Nanostructures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072China Key Laboratory of Weak Light Nonlinear Photonics of Ministry of Education School of PhysicsNankai UniversityTianjin 300071China Institute for Advanced Studies Wuhan UniversityWuhan 430072China

The study of topological semimetals hosting spin-1 Weyl points(WPs)beyond Dirac points and WPs has attracted a great deal of ***,a spin-1 Weyl semimetal that exclusively possesses spin-1 WPs in a clean frequency window without being shadowed by any other nodal points is yet to be *** study reports a spin-1 Weyl semimetal in a phononic *** spin-1 WPs are touched by two linear dispersions and an additional flat band and carry monopole charges(-2,0,2)or(2,0,-2)for the three bands from the bottom to the *** result in double Fermi arcs,which occur between the first and second bands,as well as between the second and third *** robust propagation is observed against the multiple joints and topological negative refraction of the acoustic surface arc *** results of this study create the basis for the exploration of the unusual properties of spin-1 Weyl physics on a macroscopic scale.

关键词： spin-1 Weyl point phononic crystal topological surface states

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Enhanced wide-angle third-harmonic generation in flat-band-engineered quasi-BIC metagratings

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 81-87页

作者： Yijia Zang Ruoheng Chai Wenwei Liu Zhancheng Li Hua cheng Jianguo Tian shuqi chen The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Institute of Applied PhysicsNankai UniversityTianjin 300071China School of Materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Nonlinear metasurfaces and photonic crystals provide a significant way to generate and manipulate nonlinear signals owing to the resonance-and symmetry-based light-matter interactions supported by the artificial ***,the nonlinear conversion efficiency is generally limited by the angular dispersion of optical resonances especially in nonparaxial ***,we propose a metagrating realizing a quasi-bound-state in the continuum in a flat band to dramatically improve the third harmonic generation(THG)efficiency.A superior operating angular range is achieved based on the interlayer and intralayer couplings,which are introduced by breaking the mirror symmetry of the *** demonstrate the relation of angular dispersion between the nonlinear and linear responses at different incident *** also elucidate the mechanism of these offaxis flat-band-based nonlinear conversions through different mode *** scheme provides a robust and analytical way for nonparaxial nonlinear generation and paves the way for further applications such as wide-angle nonlinear information transmission and enhanced nonlinear generation under tight focusing.

关键词： nonlinear metasurfaces quasi-bound-state in the continuum angular dispersion third harmonic generation efficiency

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Ultra-robust informational metasurfaces based on spatial coherence structures engineering

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Light(Science & Applications) 2024年第7期13卷 1310-1319页

作者： Leixin Liu Wenwei Liu Fei Wang Xiaofeng Peng Duk-Yong Choi Hua cheng Yangjian Cai shuqi chen Shandong Provincial Engineering and Technical Center of Light Manipulations Collaborative Innovation Center of Light Manipulation and ApplicationsShandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250014China. The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of PhysicsSchool of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300071China. School of Physical Science and Technology Soochow UniversitySuzhou 215006China. Laser Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia. The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China

Optical information transmission is vital in modern optics and photonics due to its concurrent and multi-dimensional nature,leading to tremendous applications such as optical microscopy,holography,and optical *** optical information transmission technologies suffer from bulky optical setup and information loss/crosstalk when meeting scatterers or obstacles in the light ***,we theoretically propose and experimentally realize the simultaneous manipulation of the coherence lengths and coherence structures of the light beams with the disordered *** ultra-robust optical information transmission and self-reconstruction can be realized by the generated partially coherent beam with modulated coherence structure even 93%of light is recklessly obstructed during light transmission,which brings new light to robust optical information transmission with a single *** method provides a generic principle for the generalized coherence manipulation on the photonic platform and displays a variety of functionalities advancing capabilities in optical information transmission such as meta-holography and imaging in disordered and perturbative media.

关键词： optics coherent holography

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Color-selective three-dimensional polarization structures

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Light(Science & Applications) 2022年第11期11卷 2706-2715页

作者： Yuttana Intaravanne Ruoxing Wang Hammad Ahmed Yang Ming Yaqin Zheng Zhang-Kai Zhou Zhancheng Li shuqi chen Shuang Zhang Xianzhong chen Institute of Photonics and Quantum Sciences School of Engineering and Physical SciencesHeriot-Watt UniversityEdinburgh EH144ASUK Department of Mathematics and Physics North China Electric Power UniversityBaoding 071003China School of Physics and Electronic Engineering Changshu Institute of TechnologySuzhou 215000China State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510275China School of Physics and TEDA Applied Physics Institute Nankai University94 Weijin RoadTianjin 300071China Department of Physics University of Hong KongHong KongChina Department of Electronic&Electrical Engineering University of Hong KongHong KongChina

Polarization as an important degree of freedom for light plays a key role in *** beams with controlled polarization profles have diverse applications,such as information encoding,display,medical and biological imaging,and manipulation of ***,conventional polarization optics can only realize two-dimensional polarization structures in a transverse *** emergent ultrathin optical devices consisting of planar nanostructures,so-called metasurfaces,have shown much promise for polarization *** we propose and experimentally demonstrate color-selective three-dimensional(3D)polarization structures with a single *** geometric metasurfaces are designed based on color and phase multiplexing and polarization rotation,creating various 3D polarization ***,different 3D polarization knots in the same observation region can be achieved by controlling the incident wavelengths,providing unprecedented polarization control with color information in 3D *** research findings may be of interest to many practical applications such as vector beam generation,virtual reality,volumetric displays,security,and anti-counterfeiting.

关键词： polarization optics dimensional

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Effect of Aging Temperature on Stress Corrosion Cracking of 17-4 PH Stainless Steel in Wet H_2S Environment

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稀有金属材料与工程 2012年第S1期41卷 219-222页

作者： Zhou chengshuang,Zheng shuqi,chen Changfeng,Lu Guiwu China University of Petroleum,Beijing 102249,China China Univ Petr Dept Mat Sci & Engn Beijing 102249 Peoples R China

The effect of aging temperature on stress corrosion crocking of 17-4 precipitation-hardened(PH)stainless steel in simulated stimulant oil well environment was studied by the method B-NACE standard bent-beam *** is found that when aging temperature ranges from 480 to 610℃,the sensitivity of hydrogen embrittlement decreases significantly.

关键词： stress corrosion crocking(SSC) aging temperature 17-4 precipitation-hardened stainless steel hydrogen embrittlement

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Electromagnetic wave manipulation based on few-layer metasurfaces and polyatomic metasurfaces

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ChemPhysMater 2022年第1期1卷 6-16页

作者： Shiwang Yu Jiaqi cheng Zhancheng Li Wenwei Liu Hua cheng Jianguo Tian shuqi chen The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationRenewable Energy Conversion and Storage CenterSchool of Physics and TEDA Institute of Applied PhysicsNankai UniversityTianjin 300071China The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Metasurfaces,whose electromagnetic(EM)responses can be artificially designed,are two-dimensional arrays composed of subwavelength *** by various fascinating developments in the past decade,metasurfaces have been proved as a powerful platform for the implementation of EM wave ***,the planar monoatomic metasurfaces widely used in previous works have limited design freedoms,resulting in some disadvantages for the realization of high-performance and new functional EM wave *** latest developments show that few-layer metasurfaces and polyatomic metasurfaces are good alternatives to overcome the drawbacks of planar monoatomic metasurfaces and realize high-efficient,multi-band and broad-band EM *** provide additional degrees of design freedom via introducing multilayer layouts or combining multiple meta-atoms into a unit cell ***,recent advances of few-layer and polyatomic metasurfaces are *** design strategies,EM properties and main advantages of few-layer metasurfaces and polyatomic metasurfaces are overviewed ***,few-layer metasurfaces and polyatomic metasurfaces in recent progress for EM wave manipulation are classified and discussed from the viewpoint of their design *** last,an outlook on future development trends and potential applications in these fast-developing research areas is presented.

关键词： EM wave manipulation Few-layer metasurfaces Polyatomic metasurfaces Collective interference

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Controllable optical activity with non-chiral plasmonic metasurfaces

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Light(Science & Applications) 2016年第1期5卷 646-652页

作者： Ping Yu Jianxiong Li chengchun Tang Hua cheng Zhaocheng Liu Zhancheng Li Zhe Liu Changzhi Gu Junjie Li shuqi chen Jianguo Tian The MOE Key Laboratory of Weak Light Nonlinear Photonics School of PhysicsTeda Applied Physics Instituteand the 2011 Project Collaborative Innovation Center for Biological TherapyNankai UniversityTianjin 300071China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Optical activity is the rotation of the plane of linearly polarized light along the propagation direction as the light travels through optically active *** existing methods,the strength of the optical activity is determined by the chirality of the materials,which is difficult to control *** we numerically and experimentally investigated an alternative approach to realize and control the optical activity with non-chiral plasmonic *** judicious design of the structural units of the metasurfaces,the right and left circular polarization components of the linearly polarized light have different phase retardations after transmitting through the metasurfaces,leading to large optical ***,the strength of the optical activity can be easily and accurately tuned by directly adjusting the phase *** proposed approach based on non-chiral plasmonic metasurfaces exhibits large optical activity with a high controllable degree of freedom,which may provide more possibilities for applications in photonics.

关键词： metasurfaces optical activity surface plasmon polaritons

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