Results 81 to 90 of about 560,130 (293)

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, EarlyView.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

Wavefront manipulation by acoustic metasurfaces: from physics and applications

Nanophotonics, 2018
Molding the wavefront of acoustic waves into the desired shape is of paramount significance in acoustics, which however are usually constrained by the acoustical response of naturally available materials.
Liang Bin, Cheng Jian-chun, Qiu Cheng-Wei   +2 more
doaj   +1 more source

Achieving Directive Radiation and Broadband Microwave Absorption by an Anisotropic Metasurface

IEEE Access, 2019
Simultaneously integrating electromagnetic absorption and wavefront-shaping into a single metasurface with flat and low profile is crucial for many practical applications both in science and engineering community. Here, by introducing lossy components to
Jun Sun, Ke Chen, Guowen Ding, Wenlong Guo, Junming Zhao, Yijun Feng, Tian Jiang   +6 more
doaj   +1 more source

Toward a universal metasurface for optical imaging, communication, and computation

Nanophotonics, 2022
In recent years, active metasurfaces have emerged as a reconfigurable nanophotonic platform for the manipulation of light. Here, application of an external stimulus to resonant subwavelength scatterers enables dynamic control over the wavefront of ...
Thureja Prachi, Sokhoyan Ruzan, Hail Claudio U., Sisler Jared, Foley Morgan, Grajower Meir Y., Atwater Harry A.   +6 more
doaj   +1 more source

Adaptive Quantum Optics with Spatially Entangled Photon Pairs

, 2018
Light shaping facilitates the preparation and detection of optical states and underlies many applications in communications, computing, and imaging. In this Letter, we generalize light shaping to the quantum domain.
Defienne, Hugo, Fleischer, Jason W., Reichert, Matthew   +2 more
core   +1 more source

Wavefront Manipulation Attack via Programmable mmWave Metasurfaces: from Theory to Experiments [PDF]

, 2023
Haoze Chen, Hooman Saeidi, Suresh Venkatesh, Kaushik Sengupta, Yasaman Ghasempour   +4 more
openalex   +1 more source

Design and Fabrication of High Dielectric GRIN Lens for a Directive Antenna Using a Hybrid Filled Voxel Additive Manufacturing Technique

Advanced Materials Technologies, EarlyView.
Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng, Anna Radkovskaya, Kailun Xu, Ekaterina Shamonina, Patrick S. Grant   +4 more
wiley   +1 more source

High-Q nanophotonics: sculpting wavefronts with slow light

Nanophotonics, 2020
Densely interconnected, nonlinear, and reconfigurable optical networks represent a route to high-performance optical computing, communications, and sensing technologies.
Barton David, Hu Jack, Dixon Jefferson, Klopfer Elissa, Dagli Sahil, Lawrence Mark, Dionne Jennifer   +6 more
doaj   +1 more source

Photonics of Topological Magnetic Textures

Advanced Optical Materials, EarlyView.
Localized noncollinear magetic textures imprint their geometry and topology onto traversing photonic fields endowing them with orbital angular‐momentum, chirality, and magnetoelectric densities. Abstract Topological textures in magnetically ordered materials are an important case studies for fundamental research with promising applications in data ...
Vakhtang Jandieri, Ramaz Khomeriki, Daniel Erni, Nicolas Tsagareli, Qian Li, Douglas H. Werner, Jamal Berakdar   +6 more
wiley   +1 more source

All-metallic geometric metasurfaces for broadband and high-efficiency wavefront manipulation

Nanophotonics, 2019
Geometric metasurfaces have shown superior phase control capacity owing to the geometric nature of their phase profile. The existing geometric metasurfaces are generally composed of metal-dielectric composites or all-dielectric subwavelength structures ...
Xie Xin, Liu Kaipeng, Pu Mingbo, Ma Xiaoliang, Li Xiong, Guo Yinghui, Zhang Fei, Luo Xiangang   +7 more
doaj   +1 more source