Article
Chemistry, Analytical
Jiayu Yu, Qiurong Zheng, Xueqin Tang, Jie He, Jie Liu, Bin Zhang, Kun Zou
Summary: This study proposes a broadband Pancharatnam-Berry (PB) metasurface element with efficient reflection and phase variation, and successfully constructs dual-mode OAM waves. By frequency control, OAM vortex beams can be scanned in different planes. Simulation and measurement results verify the feasibility and effectiveness of this design, demonstrating its great potential in OAM wave multiplexing and wireless communication system transmission.
Article
Engineering, Electrical & Electronic
Lizheng Gu, Wanchen Yang, Quan Xue, Wenquan Che
Summary: This paper presents a novel method to achieve positive phase response of antenna elements, which is successfully applied in metasurface antennas to ensure stable beam angles and dual-beam performance. Through the design of appropriate antenna elements and feeding networks, the dual-polarized dual-beam performance of +/-45 degrees is achieved.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Xu Han, Shuai Ding, Qing-Song Jia, Wei-Hao Zhang, Hao Tang, Zhengping Zhang, Xiong Wang, Yuliang Zhou, Yong-Mao Huang, Bing-Zhong Wang
Summary: In this article, a novel design concept for generating special beams based on time-reversal aperture (TRA) theory is proposed. Different forms of TRAs are investigated to overcome the limitations of traditional TRA in special beam generation. A wideband dual-polarization phase-modulation metasurface (MS) is designed, which can generate sloping Bessel Beam when illuminated by TE plane wave and accelerating beam when incident with a TM plane wave. The proposed MS achieves a dual-polarization independent phase shift range of over 400 degrees without dimensional changes and maintains high transmittance with transmission loss below 0.3 dB.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Lizheng Gu, Wanchen Yang, Quan Xue, Wenquan Che
Summary: A novel method of dual-band dual-beam control is proposed and applied in metasurface antennas, allowing for independent radiation of two bands by adjusting the feeding network. By combining metasurface cells and feeding network, the desired bands and their corresponding beam angles can be controlled effectively.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Chemistry, Analytical
Yin Zhang, Yijun Feng, Junming Zhao
Summary: In this paper, a tunable metasurface based on graphene is proposed, which can manipulate the dispersion of broadband terahertz waves by changing the Fermi level of graphene. It is demonstrated that the metasurface acts as a planar prism and a planar lens with excellent performance.
Article
Engineering, Electrical & Electronic
Na Zhang, Ke Chen, Jianmin Zhao, Qi Hu, Kui Tang, Junming Zhao, Tian Jiang, Yijun Feng
Summary: This study proposes a dual-polarized reconfigurable reflectarray (RRA) with dual-polarized beam control using a dual-channel programmable metasurface. By changing the working states of p-i-n diodes in each metasurface element, well-defined beam scanning can be achieved. The proposed RRA has promising applications in wireless communication and tracking/detecting systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Civil
Wei-Ren Chen, Heng Chang
Summary: This paper investigates the vibration behaviors of bidirectional functionally graded Timoshenko beams using the Chebyshev collocation method, and evaluates the influences of various geometric and material parameters on the vibration characteristics of the beams through a parametric study.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Optics
Si Jia Li, Bo Wen Han, Zhuo Yue Li, Xiao Bin Liu, Guo Shai Huang, Rui Qi Li, Xiang Yu Cao
Summary: This paper proposes a scheme for modulating dual-circularly polarized multi-beam using a transmissive coding metasurface, based on the Pancharatnam-Berry phase control technique and phase compensation principle.
Article
Optics
Ping Xu, Yufei Xiao, Haixuan Huang, Tuo Yang, Xulin Zhang, Xia Yuan, Xiong Chao Li, Haidong Xu, Mengyu Wang
Summary: A simple dielectric metasurface hologram is proposed and designed in this work by combining electromagnetic vector analysis and immune algorithm. It can holographically display dual wavelength orthogonal-linear polarization light in the visible light band, solve the problem of low efficiency in traditional metasurface hologram design, and effectively improve the diffraction efficiency. The titanium dioxide metasurface nanorod based on a rectangular structure is optimized and designed, and the metasurface is fabricated using the Atomic Layer Deposition method. The experimental results confirm the feasibility of wavelength and polarization multiplexing holographic display, and indicate potential applications in holographic display, optical encryption, anti-counterfeiting, data storage, and other fields.
Article
Optics
Xuan Cong, Hongxin Zeng, Shiqi Wang, Qiwu Shi, Shixiong Liang, Jiandong Sun, Sen Gong, Feng Lan, Ziqiang Yang, Yaxin Zhang
Summary: This work demonstrates a functionally decoupled terahertz metasurface that can incorporate any two functions into one metasurface and switch dynamically through external excitation. The metasurface operates in two modes with independent phase modulation, allowing for dynamic switching between dual functions.
PHOTONICS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Yutang Dong, Wei Kang, Boyu Sima, Wen Wu
Summary: This letter proposes a nonreciprocal metasurface retroreflector that introduces isolation between two orthogonal polarizations. The metasurface converts vertically polarized waves to horizontally polarized waves and achieves retroreflection at a specific incident angle.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
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
Engineering, Electrical & Electronic
Pengfei Zhang, Wenmei Zhang, Xinwei Chen, Guorui Han, Jinrong Su, Rongcao Yang
Summary: This method proposes a design for low-sidelobe dual-beam antennas based on metasurfaces with independently regulated amplitude/phase. By modeling the antenna, employing phase compensation technology, and controlling the reflection amplitude of the metasurface, the sidelobe level of the antenna is successfully reduced.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Optics
Qingxin Guo, Qingyue Peng, Meijun Qu, Jianxun Su, Zengrui Li
Summary: An optical transparent metasurface for dual-band Wi-Fi shielding has been proposed in this paper. The unit cell of the metasurface is composed of a hexagonal ring and a three-petal oval flower, which resonate at 2.4 and 5.5 GHz, respectively. Simulation and experimental results show that the metasurface is insensitive to the polarization of incoming waves and offers excellent angular stability. This metasurface has potential applications in electromagnetic wave suppression and information security in indoor environments.
Article
Nanoscience & Nanotechnology
Meini Gao, Jiawei Wang, Wenfeng Cai, Ming Cheng, Xichen Hao, Yuhan Wang, Ying Liu, Delai Kong, Jianxun Liu, Haitao Dai, Yan Jun Liu
Summary: This paper proposes a method based on liquid crystal (LC) alignment with metasurfaces for dynamic tuning of Airy beam trajectory. By introducing metasurfaces into LC alignment, a sizable linear potential is achieved in a short distance, enabling effective tuning of Airy beam trajectory.
