Results 101 to 110 of about 5,414 (280)

RCS Angular Control With Gradient Metasurfaces: Design and Measurement

International Journal of Antennas and Propagation
This letter proposes the design and measurement of a periodic metasurface that achieves anomalous reflection with reduced RCS in a given parasitic direction.
Matthieu Elineau, Renaud Loison, Stéphane Méric, Raphaël Gillard, Pascal Pagani, Geneviève Mazé-Merceur, Philippe Pouliguen   +6 more
doaj   +1 more source

TRIM: Simultaneous Thermometry, Ranging, and Imaging via a Monolithic Metalens

Advanced Science, EarlyView.
ABSTRACT While metasurfaces offer a pathway beyond the discrete architectures of conventional LWIR systems, physically fusing high‐precision thermometry and passive ranging onto a single metalens remains a formidable challenge. Here, we demonstrate a monolithic, dual‐focus metalens capable of simultaneous multidimensional sensing.
Man Yuan, Yuqing Zhang, Wangzhe Zhou, Zhaojian Zhang, Xiaoyun He, Xinpeng Jiang, Yiyi Li, Xin He, Jiagui Wu, Yuanmu Yang, Junbo Yang   +10 more
wiley   +1 more source

Metasurface based Uncooled Microbolometer with High Fill Factor

, 2019
This paper presents the design, fabrication, characterization, and noise reduction of metasurface integrated uncooled infrared (IR) microbolometers. The metasurface allows the devices to be fabricated with the supporting arms positioned underneath the ...
Abdullah, Amjed, Qu, Chuang, Omar Alkorjia, Alkorjia, Omar, Amjed Abdullah, Akshay Koppula, Chuang Qu, Tao Liu, Almasri, Mahmoud, Kinzel, Edward C., Zhu, Chen, Edward Kinzel, Cameron Warder, Warder, Cameron, Chen Zhu, Koppula, Akshay, Liu, Tao, Mahmoud Almasri   +17 more
core   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Extreme‐Thickness Meta‐Membrane for Controlling Terahertz Vectorial Beams

Advanced Science, EarlyView.
We propose ultra‐thin (λ/30) transmissive terahertz metasurfaces combining near‐field resonant and detour phases in coupled‐slit meta‐atoms, enabling continuous phase and polarization control beyond conventional designs. Based on leaky‐mode theory, scalar and vectorial terahertz Bessel beams at 0.39 THz are experimentally demonstrated, with ...
Yufei Song, Yixiang Xu, Yikai Xu, Yuanxi Liu, Shaojie Ma, Qiong He, Zhuo Wang, Lei Zhou   +7 more
wiley   +1 more source

Sub‐Terahertz Memristor Switches Using MoS2 by Liquid–Liquid Interface Assembly

Advanced Science, EarlyView.
This work introduces application‐ready sub‐terahertz memristor switches fabricated from electrochemically exfoliated MoS2 nanosheets assembled at a liquid–liquid interface. The devices exhibit robust unipolar resistive switching, low insertion loss, and high isolation across 10–110 GHz.
Tomás Mingates, Mohamed E. Ghatas, Jonas Deuermeier, Adam G. Kelly, Joseph Neilson, Jonathan N. Coleman, Luís Mendes, João C. Vaz, Sérgio Matos, Luca Lucci, Antonio Clemente, Zdeněk Sofer, Luís M. Pessoa, Elvira Fortunato, Rodrigo Martins, Asal Kiazadeh   +15 more
wiley   +1 more source

Electrically tunable plasmonic metasurface as a matrix of nanoantennas

Nanophotonics
We report the fabrication and characterization of a plasmonic metasurface comprising electrically-contacted sub-wavelength gold dipole nanoantennas, conformally coated by a thin hafnia film, an indium tin oxide layer and a backside mirror, forming metal ...
Mayoral Astorga Luis Angel, Shabaninezhad Masoud, Northfield Howard, Ntais Spyridon, Rashid Sabaa, Lisicka-Skrzek Ewa, Mehrvar Hamid, Bernier Eric, Goodwill Dominic, Ramunno Lora, Berini Pierre   +10 more
doaj   +1 more source

A Study on Optimal Design of Polarization-Independent Magneto-Metasurface Isolators Based on Multi-Material Topology Optimization

IEEE Photonics Journal
Metasurface has attracted a lot of attentions because they can realize properties that cannot be achieved with ordinary materials and are easy to be fabricated using established fabrication processes. In this paper, in order to design metasurface without
Mio Taniguchi, Akito Iguchi, Yasuhide Tsuji   +2 more
doaj   +1 more source

Design of dual frequency antenna with gain enhancement effect for microwave power transmission [PDF]

AIP Advances
This paper proposes a method for enhancing antenna gain based on a zero-refractive-index metasurface, which can improve the gain of antennas under bending conditions and mitigate the gain reduction caused by deformation in flexible antennas.
Wenxiong Peng, Ning Luo, Jiazheng Yu, Huaiqing Zhang, Xin Wang, Hanchen Li   +5 more
doaj   +1 more source

Strain‐Modulated Reconfigurable Optical Information Processing in Flexible Graphene/PDMS

Advanced Science, EarlyView.
Graphene/PDMS—a stable, mechanically robust, and highly tunable flexible composite, exhibits excellent strain‐tunability. The spatial self‐phase modulation (SSPM) effect can be reversibly and continuously modulated by strain. A strain‐gated optical switch can be constructed, thereby realizing reconfigurable optical logic gates and reversible switching ...
Zexin Cui, Lihua Tong, Yuehua Wang, Mengting Jiang, Jiaxu Sun, Huabo Song, Qifan Li, Guangyuan Cui, Churui Guo, Wentao Meng, Shaoya Wang, Yuee Chen, Yanling Wu, Xiaodan Xu   +13 more
wiley   +1 more source