Article
Engineering, Electrical & Electronic
Tamar Haimov, Koray Aydin, Jacob Scheuer
Summary: The proposed approach utilizes an active VO2 layer and a Bragg reflector to achieve dynamic holography at optical frequencies; a reconfigurable metasurface for tunable binary holography is proposed and analyzed; the device can also function as a broad-angle perfect absorber when tuned to the proper temperature.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Multidisciplinary Sciences
Vikrant Singh, Mohsen Khalily, Rahim Tafazolli
Summary: This article introduces a new technology for beyond 5G networks, which is a compact antenna system capable of beam-switching in the azimuth plane. The design offers a digitally controllable directional radiation pattern and is suitable for various IoT applications.
Article
Engineering, Electrical & Electronic
Ololade M. Sanusi, Ying Wang, Langis Roy
Summary: This paper presents a multifunctional reconfigurable metasurface based on liquid metal injection. The metasurface is formed by two switchable microfluidic layers and can be reconfigured into different states, exhibiting different properties. Experimental results confirm the polarization conversion performance of the metasurface, making it suitable for modern integrated antenna array systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Physics, Applied
Kaizhu Liu, Yanhong Li, Chengchao He, Changsen Sun, Xue Han, Hisang-Chen Chui
Summary: In this work, a surface electric field enhancement device based on the combined effect of surface plasmons resonance and surface plasmon polariton was proposed. By optimizing the relationship between the morphology of the nanostructures and the electric field components, the intensity of the surface polarized plasmons can be further enhanced. The method allows for tunable control of the electric field enhancement by controlling the number of meta-atoms that excite surface plasmon polaritons.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Feilong Yu, Zengyue Zhao, Jin Chen, Jiuxu Wang, Rong Jin, Jian Chen, Jian Wang, Guanhai Li, Xiaoshuang Chen, Wei Lu
Summary: The study proposes a novel quasi-2p phase coverage approach to construct a periodic and reconfigurable metasurface capable of achieving achromatic and dynamic switching between two deflections in the microwave. The method allows for broadband response and flexible tunability, paving the way for dispersion-free and switchable manipulations of electromagnetic waves.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Analytical
Monisha Selvaraj, Ramya Vijay, Rajesh Anbazhagan, Amirtharajan Rengarajan
Summary: This article introduces a reconfigurable combined-loop metasurface that can effectively manipulate phase reflection. By incorporating PIN diodes and controlling their states, the metasurface can achieve various phase reflections. Experimental results demonstrate the potential of this technology in 6G applications.
Article
Nanoscience & Nanotechnology
Pengfei Cao, Yuan Li, Yubo Deng, Yuyao Wu
Summary: A terahertz constant frequency reconfigurable metasurface based on tunable electromagnetically induced transparency (EIT)-like property was designed, showing evident transparency window at 1.98 THz with over 80% amplitude. By individually reconfiguring the Fermi energy of each resonator, the EIT-like effects, transparency window amplitude, modulation speed and group delay could be actively controlled.
Article
Computer Science, Hardware & Architecture
Ender Ayanoglu, Filippo Capolino, A. Lee Swindlehurst
Summary: Reconfigurable Intelligent Surfaces (RISs) are programmable metasurfaces that adaptively steer electromagnetic energy to provide wireless access and improve coexistence with other services. The wave-controlled RIS architecture proposed in this work reduces hardware requirements and enhances performance through signal processing and machine learning methods.
IEEE WIRELESS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Jean-Baptiste Gros, Vladislav Popov, Mikhail A. Odit, Vladimir Lenets, Geoffroy Lerosey
Summary: This study focuses on the design and experimental demonstration of a reconfigurable intelligent surface with binary phase modulation, showing high efficiency and potential in controlling millimeter waves. The research involves numerical analysis and experimental validation of unit cells, highlighting the capabilities of binary phase RIS in various scenarios.
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jinglin He, Zhuolin Shi, Sheng Ye, Minhua Li, Jianfeng Dong
Summary: A reconfigurable bi-functional metasurface is proposed in this paper, which can switch between transmission and absorption modes in a specific wavelength range using phase-change material, and its response is independent of the polarization of the incident wave.
RESULTS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
Shuang Liang
Summary: As the propagation distance of the vortex wave increases, its dispersion also increases, requiring enhanced focus for information transmission. However, in order to expand the detection range, dispersion needs to be increased in the detection scenario. Therefore, dynamically adjusting the focus dispersion of the vortex beam is crucial. Here, we propose a novel programmable metasurface design that generates vortex beams and tunes their near-field focusing dispersion performance. By introducing two new parameters, m and n, into the electric field strength equation of the vortex beam, we achieve tunable focusing of the vortex beam through the programmable metasurface.
Article
Materials Science, Multidisciplinary
Trung Dung Ha, Chia-Heng Sun, Mohamed Farhat, Pai-Yen Chen
Summary: Parity-time-reciprocal scaling (PTX) symmetry is used to tailor the resonance linewidth and gain threshold of non-Hermitian systems, with exciting applications such as coherent perfect absorber-lasers and exceptional point-based devices. A nearly-lossless, low-index metachannel formed by PTX-symmetric metasurfaces operating at the CPAL point is proposed, supporting undamped weakly-guided fast waves and achieving ultradirective leaky-wave radiation. This structure also allows for reconfigurable and tunable radiation angle and beamwidth. PTX-symmetric metasurfaces have potential in designing antennas and emitters with ultrahigh directionality and exploring emerging applications enabled by extreme material properties.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Optics
Amged Alquliah, Mohamed Elkabbash, Jinluo Cheng, Gopal Verma, Chaudry Sajed Saraj, Wei Li, Chunlei Guo
Summary: The study introduces a novel concept for dynamically controlling guided light in the near-visible spectral range using an ultracompact active metasurface, resulting in a reconfigurable and non-volatile (1 x 2) switch. This innovative device features an ultracompact coupling length and high bandwidth compared to other PCM-based switches, with low losses and low cross talk in the near-visible region.
PHOTONICS RESEARCH
(2021)
Article
Optics
Ximin Tian, Junwei Xu, Kun Xu, Yanhong Qian, Xiaolong Ma, Peng Yang, Xiangyang Duan, Pei Ding, Zhi-Yuan Li
Summary: By integrating phase-change material Ge2Sb2Te5 and reflective metasurface, a unique carpet cloak has been achieved, providing broadband invisibility, wide angular coverage, continuous tunability, and switchable cloaking features.
Article
Engineering, Multidisciplinary
Ping Wang, Yong Zhang, Yu Wang, Hong-cheng Zhou, Zhong-ming Yan
Summary: In this paper, a multifunctional polarization converter (MFPC) based on the multilayer reconfigurable metasurface is proposed, which can assist the source antenna to transmit and receive multiple polarization signals. The MFPC consists of a grating and four layers of metasurfaces incorporated with PIN diodes, providing functions such as polarization conversions and filtering. The proposed MFPC has potential applications in improving wireless communication capacity and reliability.
DEFENCE TECHNOLOGY
(2023)
