Results 81 to 90 of about 674 (191)

Efficient digital metasurfaces for full-space manipulation of acoustic waves with low crosstalk between reflection and transmission

Materials & Design, 2023
Metasurfaces, as a class of emergent platforms, have shown enormous potentials in controlling classical waves. However, achieving simultaneous and dynamic manipulations of reflected and transmitted waves in a low-crosstalk and high-efficiency manner via ...
Zheng Zhang, Wei Xiang Jiang, Xin Ge Zhang, Wen Kang Cao, Lin Bai, Cheng-Wei Qiu, Tie Jun Cui   +6 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Reprogrammable Metasurface Controlled by 2D Thermal Fields

, 2022
The combination of thermal field sensing and microwave operation is an innovative topic in metamaterials. Although there exists research on modulating electromagnetic waves by controlling each column of the metasurface elements for programmable ...
Lei Chen, Haoyang Cui, Tan, Hongrui, Fuju Ye, Sisi Luo, Chen, Lei, Hongrui Tan, Ming Zhang, Luo, Sisi, Cui, Haoyang, Ye, Fuju, Zhang, Ming   +11 more
core   +1 more source

Smart sensing metasurface with self-defined functions in dual polarizations

Nanophotonics, 2020
For the intelligence of metamaterials, the -sensing mechanism and programmable reaction units are two important components for self-recognition and -determination. However, their realization still face great challenges.
Ma Qian, Hong Qiao Ru, Gao Xin Xin, Jing Hong Bo, Liu Che, Bai Guo Dong, Cheng Qiang, Cui Tie Jun   +7 more
doaj   +1 more source

Deep Learning‐Assisted Design of Mechanical Metamaterials

Advanced Intelligent Discovery, EarlyView.
This review examines the role of data‐driven deep learning methodologies in advancing mechanical metamaterial design, focusing on the specific methodologies, applications, challenges, and outlooks of this field. Mechanical metamaterials (MMs), characterized by their extraordinary mechanical behaviors derived from architected microstructures, have ...
Zisheng Zong, Pu Wen, Zhiping Chai, Dunxuan Wu, Han Ding, Zhigang Wu   +5 more
wiley   +1 more source

Flexible and fast estimation method of far-field patterns for digital-coding metasurfaces

Optics Express, 2023
We propose a flexible and fast estimation method to calculate the far-field patterns of digital-coding metasurfaces (DCMs) by performing chirp Z-transform (CZT), called the DCM-CZT method. Because of the expression form of convolution, CZT can be accelerated by fast Fourier transform.
Jing, Mu, Qian, Ma, Tie Jun, Cui
openaire   +2 more sources

Factorization Machine‐Based Active Learning for Functional Materials Design with Optimal Initial Data

Advanced Intelligent Discovery, EarlyView.
This work investigates the optimal initial data size for surrogate‐based active learning in functional material optimization. Using factorization machine (FM)‐based quadratic unconstrained binary optimization (QUBO) surrogates and averaged piecewise linear regression, we show that adequate initial data accelerates convergence, enhances efficiency, and ...
Seongmin Kim, In‐Saeng Suh
wiley   +1 more source

Reconfigurable Digital Metasurface for 3-Bit Phase Encoding

, 2021
In this contribution, we propose, design, simulate, and prototypically realize a 3-bit digital coding metasurface, by controlling the phase and amplitude response of the metasurface, which is applicable to a wireless telecommunication system as ...
Langwieser, Robert, Zhao, Shengya, Mecklenbräuker, Christoph   +2 more
core  

Ultra-Wideband RCS Reduction Based on Non-Planar Coding Diffusive Metasurface

, 2020
A novel non-planar coding metasurface optimized by discrete particle swarm algorithm (DPSO) is proposed in terms of the property of wideband radar cross-section (RCS) and diffuse scattering.
Guozhang Wu; Wenqi Yu; Tao Lin; Yangyang Deng; Jianguo Liu;, Jianguo Liu, Yangyang Deng, Guozhang Wu, Wenqi Yu, Tao Lin   +5 more
core   +1 more source

Triple-Band Terahertz Chiral Metasurface for Spin-Selective Absorption and Reflection Phase Manipulation

, 2022
In this paper, a triple-band terahertz chiral metasurface is proposed, which could realize spin-selective absorption (SSA) effect and efficient independent phase manipulation in three distinct frequency bands.
Lin Dong, Jun Ding, Rong Niu, Tianyu Ma, Hang Zhang, Houjun Sun, Liming Si, Xiue Bao   +7 more
core   +1 more source