Article
Optics
Haiyang Ren, Weiwei Yue, Jian Liu, Liyuan Liu, Zhaoxin Geng
Summary: A flexible metasurface based on parylene-C film was proposed in this study, featuring elliptical split-ring units that can function as 2D beam deflectors, 3D beam deflectors, or vortex generators in the THz band. The metasurface demonstrates broadband effects and enables modulation of THz waves for various applications in THz optical field modulation and communication.
OPTICS COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ming Zhang, Peng Dong, Yu Wang, Baozhu Wang, Lin Yang, Ruihong Wu, Weimin Hou, Junyao Zhang
Summary: In this paper, a design for THz tunable wavefront manipulation achieved by the combination of plasmonic metasurface and phase change materials (PCMs) is proposed. The design allows for tunable reflective anomalous beam deflector and focusing metalens by utilizing the phase difference between the amorphous and crystalline states.
Article
Chemistry, Physical
Lili Liu, Cai Chen, Youchang Jiang, Chunjun Shu, Chenglin He
Summary: A tunable metasurface based on the VO2 layer is proposed and verified in the terahertz band, achieving a high absorption peak. The absorption performance of the metasurface is repeatable in the heating and cooling process, making it suitable for liquid and temperature sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Applied
Yuan Li, He Ma, Yu Wang, Jun Ding, Limei Qi, Yulan Fu, Ran Ning, Lu Rong, Dayong Wang, Xinping Zhang
Summary: With the growing need for broadband wireless communication, high-resolution radar, security inspection, and biological analysis, terahertz (THz) technology has made significant progress in recent years. This progress has been possible due to the development of various THz functional devices, with metasurface being widely applied in these devices. However, constructing flexible THz metasurface devices remains a challenge due to the lack of flexibility in traditional semiconductor and metal materials. In this study, a two-dimensional material called MXene was used to create flexible metasurfaces with frequency filtering and polarization functions. These metasurfaces, combined with vanadium dioxide, showed excellent amplitude modulation performance under electrical stimulation. The flexibility and high integration of this active metasurface make it useful in THz imaging and sensing systems.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Mechanical
Zhu-Long Xu, Dan-Feng Wang, Yun-Fei Shi, Zheng-Hua Qian, Badreddine Assouar, Kuo-Chih Chuang
Summary: In this paper, an aperiodic elastic metasurface is proposed for arbitrary phase and amplitude modulation, using pillared resonators of different heights. The metasurface can achieve full transmission and steer flexural waves into different directions with different amplitudes. The inverse design method and aperiodic design have potential applications in other functional metasurfaces.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Optics
Zhi-Yu Tan, Fei Fan, Teng-Fei Li, Sheng-Jiang Chang
Summary: The study introduces a metal/magneto-optical hybrid PB phase structure to effectively manipulate and enhance the chirality of THz field, utilizing M() PB metasurfaces in various behaviors. With magnetic tunability, these PB metasurfaces can switch from OFF to ON state.
Article
Engineering, Electrical & Electronic
Aileen Noori, Bora Akyurek, Yasemin Demirhan, Lutfi Ozyuzer, Kaan Guven, Hakan Altan, Gulnur Aygun
Summary: In recent years, coding metamaterials have gained significant attention for their ability to digitally control electromagnetic wave scattering/transmission patterns. This study presents a novel hard-coded metasurface design using stripe and checkerboard patterns of bilayer unit cells. Experimental and simulation results demonstrate efficient multi-beam reflection in the THz range with uniform amplitude and 1-bit coded phase. The metasurface design holds promise for large-scale fabrication and can be used for the development of actively coded metasurfaces.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Benwen Chen, Shengxin Yang, Jian Chen, Jingbo Wu, Ke Chen, Weili Li, Yihui Tan, Zhaosong Wang, Hongsong Qiu, Kebin Fan, Caihong Zhang, Huabing Wang, Yijun Feng, Yunbin He, Biaobing Jin, Xinglong Wu, Jian Chen, Peiheng Wu
Summary: Thermally activated Janus metasurfaces with phase change materials can produce designed phase delays, enabling reconfigurable THz Janus metasurfaces. This allows for asymmetric focusing of THz waves and directional THz holography with free-space image projections, and the information can be manipulated via temperature and incident THz wave direction. This research offers a common strategy for the reconfigurability of Janus metasurfaces and has potential applications in THz optical information encryption, data storage, and smart windows.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Physics, Applied
Yan Wang, Shaohe Li, Hui Wang, Longcheng Feng, Bowen Tan, Yihui Tan, Runfeng Su, Jingbo Wu, Caihong Zhang, Biaobing Jin, Jian Chen, Peiheng Wu
Summary: This study demonstrates a broadband, ultrathin, and efficient metasurface-based asymmetric transmission and wavefront manipulation method in the terahertz region, which provides a promising route for applications such as information encryption, THz wireless communication, and spectroscopy.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Luyao Wang, Zijie Gao, Zhenlin Hou, Jinmei Song, Xiaoyu Liu, Yifei Zhang, Xiaodong Wang, Fuhua Yang, Yanpeng Shi
Summary: In this study, an analogue of electromagnetically induced transparency (EIT) was excited in the terahertz range using a periodic unit consisting of a silicon rectangular bar resonator and a silicon ring resonator. Active control of the EIT-like effect was achieved by integrating a monolayer graphene into THz metamaterials, allowing for modulation of electron distribution and transmission. The results have potential applications in slow light devices and ultrafast optical signal processing.
Article
Optics
Jie Li, Chenglong Zheng, Jitao Li, Guocui Wang, Jingyu Liu, Zhen Yue, Xuanruo Hao, Yue Yang, Fuyu Li, Tingting Tang, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: A new method for terahertz wavefront shaping with multi-channel polarization conversion via all-silicon metasurface is proposed in this paper. By superimposing the responses of two types of meta-atoms, several typical polarization states for linearly polarized waves can be efficiently evolved, providing a new idea for the design of terahertz multi-functional metadevices.
PHOTONICS RESEARCH
(2021)
Article
Optics
Shengnan Guan, Jierong Cheng, Zhiyu Tan, Fei Fan, Yunyun Ji, Shengjiang Chang
Summary: Single-pixel imaging is an attractive technique in the terahertz band where array detectors are not mature. Metasurfaces are usually used to enhance the modulation depth in the spatial light modulator. This study utilizes the flexible spectral response of pixelated metasurface resonators to encode different spatial masks into different frequency windows without active materials and external stimuli. The measurements are obtained in parallel through a single terahertz signal, allowing the reconstruction of high-fidelity images with plenty of choices of frequency windows.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Jun Li, Yongzhi Cheng, Xiangcheng Li
Summary: A transmission-type metasurface based on the combined geometric and transmission phase is proposed, which can independently manipulate circular polarization and linear polarization waves at the terahertz region. The structure's opening and orientation angles can be adjusted to achieve full phase shifts.
ADVANCED THEORY AND SIMULATIONS
(2022)
Review
Optics
Jian Wei You, Zhihao Lan, Qian Ma, Zhen Gao, Yihao Yang, Fei Gao, Meng Xiao, Tie Jun Cui
Summary: Metasurfaces are thin films with subwavelength structures that can control the polarization, phase, and amplitude of light. Recent developments in topological photonics have greatly expanded the design possibilities for metasurfaces in novel applications. This review summarizes recent progress in the field of topological metasurfaces, covering both passive and active systems in the classical and quantum regimes. It discusses passive topological phenomena and cutting-edge studies of active topological metasurfaces, as well as their potential applications in quantum information and many-body physics.
PHOTONICS RESEARCH
(2023)
Article
Engineering, Mechanical
A-Li Chen, Hua-Wei Zhang, Yue-Sheng Wang
Summary: This paper derives the expression of the generalized Snell's law for modulating the Rayleigh surface wave and proposes a reconfigurable elastic metasurface based on the screw-and-nut structure to modulate the wavefront of the Rayleigh surface wave. Flexible switching between different frequencies and functions can be achieved by adjusting the screw-in depths of the nuts.
EXTREME MECHANICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Huaqiang Cao, Cheng Wang, Baojun Li, Tianyu Chen, Peng Han, Yan Zhang, Haijun Yang, Qunyang Li, Anthony K. Cheetham
Summary: This study reports a method for synthesizing graphene by reacting hexabromobenzene with Na metal followed by annealing. The obtained graphene has predominately few-layer and single-layer structures and exhibits exciting properties and potential applications. Additionally, the method also demonstrates high catalytic activity and electronic conductivity.
Article
Chemistry, Physical
Zongyuan Wang, Guocui Wang, Bin Hu, Weiguang Liu, Jianzhou Huang, Chenjie Xiong, Yan Zhang, Juan Liu, Yongtian Wang
Summary: Terahertz technology has shown promising progress but faces challenges such as a lack of modulation materials and miniaturized system constraints. Laser-induced graphene has been discovered as a potential solution for THz wave modulation, offering a fast, large-area, and cost-effective manufacturing method.
Review
Physics, Applied
Jingwen He, Xunjun He, Tao Dong, Sen Wang, Maixia Fu, Yan Zhang
Summary: This paper reviews the design principles and research progress of metamaterials/metasurfaces in the THz region, discussing their importance in spectrum modulation, wavefront shaping, polarization conversion, and surface wave manipulation. The potential applications of metamaterials/metasurfaces in security, communication, biomedicine, and other fields are also analyzed.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Applied
Zhen Yue, Jingyu Liu, Jitao Li, Jie Li, Chenglong Zheng, Mingyang Chen, Hang Xu, Haijian Zhang, Fan Yang, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: Vector beams with inhomogeneous polarization distribution have wide application prospects in various fields. In this study, we propose a new type of metasurface zone plates to generate desired vector beams by using diffractive optics. We demonstrate the feasibility and practicability of this concept through simulations and experiments, which may contribute to the development of optical devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Zongyuan Wang, Bin Hu, Zhaoran Niu, Weiguang Liu, Guocui Wang, Yan Zhang
Summary: This study experimentally demonstrates that low-cost laser-induced porous graphene can support surface plasmon polaritons (SPPs) in the terahertz (THz) regime with good performance. A super-resolution focus was achieved using a classical structure of the semicircular slit in a THz-SPPs imaging system. The propagation loss of SPPs was found to be effectively controlled by changing the fabrication parameters of the laser. This controllable method for excited THz-SPPs on laser-induced porous graphene is of great significance for the design and wide-range applications of more compact THz on-chip devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Jingyu Liu, Fan Yang, Hui Li, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: In this work, wavefront-controllable terahertz (THz) meta-polarizers based on all-silicon materials are reported, which have higher integration characteristics than conventional metapolarizers and wavefront-controllable PCMs. These meta-polarizers can generate polarized waves from unpolarized waves and manipulate the wavefront simultaneously, providing a new impact for THz wave manipulations.
SCIENCE CHINA-MATERIALS
(2023)
Article
Optics
Guocui Wang, Tian Zhou, Jianzhou Huang, Xinke Wang, Bin Hu, Yan Zhang
Summary: This paper designs an all-dielectric moire meta-device that integrates the functions of an axicon and a spiral phase plate to generate terahertz Bessel beams. The order and nondiffraction length of the Bessel beam can be continuously tuned, and the feasibility of the platform is experimentally demonstrated. The moire meta-device provides a powerful strategy for dynamically manipulating the wavefront of electromagnetic waves and controlling the properties of the Bessel beam.
PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zhen Yue, Jitao Li, Jie Li, Chenglong Zheng, Jingyu Liu, Die Zou, Hang Xu, Fan Yang, Hui Li, Liang Wu, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: A versatile all-dielectric metasurface platform capable of dual-functional polarization manipulation for the orthogonal states of polarization in the terahertz frequency range is proposed. The platform exhibits the properties of a full-waveplate and a quarter-waveplate for different circularly polarized light. Experimental demonstrations through the design, fabrication, and characterization of representative metasurfaces validate the capability of dual-functional polarization manipulation.
Article
Chemistry, Multidisciplinary
Guibin Li, Guocui Wang, Yan Zhang, Jingling Shen, Bo Zhang
Summary: The combination of graphene and perovskite has attracted a lot of attention due to its excellent photoelectric properties for manipulating light-matter interactions. The integration of graphene and perovskite with a metasurface is proposed to enhance the metasurface device's performance. In this study, a tunable terahertz graphene-perovskite metasurface is demonstrated, showing significant reduction in transmission and manipulation of the Fano resonance mode under 780 nm laser excitation. Experimental results are verified using finite-difference time-domain simulation.
NANOSCALE ADVANCES
(2023)
Article
Computer Science, Information Systems
Jitao Li, Zhen Yue, Jie Li, Chenglong Zheng, Silei Wang, Mengyao Li, Yating Zhang, Yan Zhang, Jianquan Yao
Summary: This paper designs spatially interleaved terahertz metasurfaces based on the ingenious spatial interleaving principles and demonstrates diverse wavefront manipulations in the terahertz range. The functions performed include OAM superposition of single-frequency vortex beams, separate vortex focusing of single-frequency dual beams, different OAM manipulations of bifrequency beams in different planes, and achromatic focusing. These functions prove that spatially interleaved metasurfaces can manipulate terahertz wavefronts at both single frequency and bifrequency, which traditional metasurfaces cannot. This work paves the way for diverse terahertz wavefront manipulations.
SCIENCE CHINA-INFORMATION SCIENCES
(2023)
Article
Physics, Multidisciplinary
Zhen Yue, Jitao Li, Jie Li, Chenglong Zheng, Binbin Lu, Jingyu Liu, Fan Yang, Hui Li, Yan Zhang, Yating Zhang, Xiaofei Zang, Jianquan Yao
Summary: This work proposes a transmission-mode, multichannel all-silicon metasurface platform that can independently implement functionalities in two orthogonally polarized output fields under linearly polarized incidences, promoting design flexibility. By designing, fabricating, and characterizing a monolayer metasurface composed of silicon pillars, the ability of multi-dimensional light field control, such as polarization-switchable focusing beam, is demonstrated. Additionally, the designed metasurface can generate polarization-switchable Bessel vortex beams under linearly polarized incidences, verifying the flexibility and practicality of the platform.
ANNALEN DER PHYSIK
(2023)
Article
Optics
Chenglong Zheng, Jingyu Liu, Hui Li, Mengguang Wang, Huaping Zang, Yan Zhang, Jianquan Yao
Summary: This article demonstrates a terahertz polarization detection scheme by performing mode purity analysis and multidimensional analysis of the transmitted vortex field. The power of the proposed scheme is verified by detecting various polarization trajectories and characterizing the detected polarization states using reconstructed polarization parameters. The experimental results validate the feasibility of this scheme in polarization detection.
PHOTONICS RESEARCH
(2023)
Article
Optics
Huan Zhao, Xinke Wang, Shutian Liu, Yan Zhang
Summary: This paper proposes a three-layer metallic THz metasurface for multi-channel polarization generation and phase modulation. It demonstrates a vectorial beam generator and a vectorial hologram with eight channels for different linear polarization states. This work contributes to achieving a multi-functional metasurface in the THz band and can benefit THz communication and optical information security.
OPTO-ELECTRONIC ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Guocui Wang, Bin Hu, Huan Zhao, Meng Xu, Xinyue Wang, Jiasheng Ye, Wenfeng Sun, Shengfei Feng, Peng Han, Xinke Wang, Bo Zhang, Yan Zhang
Summary: An innovative spatiotemporally tunable metasurface, combining a metasurface and two-dimensional perovskite materials, is proposed for multidimensional dynamic manipulation of the THz field. Experimental results demonstrate the multistage modulation capability and provide a new pathway for realizing more multifunctional dynamic meta-devices.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Huan Zhao, Xinke Wang, Baogang Quan, Shutian Liu, Yan Zhang
Summary: The use of metasurfaces to control electromagnetic wave characteristics is an emerging trend that reduces complexity and enhances functionality in optical systems. This study proposes and demonstrates a high-efficiency multifunctional metasurface for operation in the terahertz band. By adjusting the geometric parameters of each layer, the phase and polarization of transmitted waves can be modulated individually. Experimental results validate the effectiveness of this approach, which has the potential to improve information-carrying capabilities in terahertz systems and benefit structured light generation, optical information security, and optical communication applications.
ADVANCED PHOTONICS RESEARCH
(2022)
