Results 41 to 50 of about 9,706 (265)

Dielectric Meta-Atoms with Liquid Crystal Alignment Effect for Electrically Tunable Metasurface

Advanced Devices & Instrumentation
Dielectric metasurfaces with tunable functions are increasingly appealing to both the academia and industrial communities. Among the many tuning mechanisms reported so far, metasurface immersed in liquid crystal (LC) stands out as one of the most viable ...
Xin Chang, Mike Pivnenko, Angadjit Singh, Weijie Wu, Pawan Shrestha, Daping Chu   +5 more
doaj   +1 more source

A Four-leaf Clover-shaped Coding Metasurface For Ultra-wideband Diffusion-like Scattering

Leida xuebao, 2021
In this paper, a novel four-leaf clover-shaped coding metasurface is proposed and applied to achieve an ultra-wideband diffusion-like scattering.
Saifullah YASIR, Guomin YANG, Feng XU
doaj   +1 more source

Chiral Metasurface Multifocal Lens in the Terahertz Band Based on Deep Learning

Micromachines, 2023
Chiral metasurfaces have garnered significant interest as an emerging field of metamaterials, primarily due to their exceptional capability to manipulate phase distributions at interfaces.
Jingjing Wang, Sixue Chen, Yihang Qiu, Xiaoying Chen, Jian Shen, Chaoyang Li   +5 more
doaj   +1 more source

Luminescent hyperbolic metasurfaces [PDF]

Nature Communications, 2017
AbstractWhen engineered on scales much smaller than the operating wavelength, metal-semiconductor nanostructures exhibit properties unobtainable in nature. Namely, a uniaxial optical metamaterial described by a hyperbolic dispersion relation can simultaneously behave as a reflective metal and an absorptive or emissive semiconductor for electromagnetic ...
Smalley, JST, Vallini, F, Montoya, SA, Ferrari, L, Shahin, S, Riley, CT, Kanté, B, Fullerton, EE, Liu, Z, Fainman, Y   +9 more
openaire   +5 more sources

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Optically Transparent Single-Layer Dual-Frequency Dual-Polarization Metasurface Applied in Close Proximity to Smartphone Millimeter-Wave Phased Array Antenna Systems

IEEE Open Journal of Antennas and Propagation
An optically transparent single-layer dual-frequency dual-polarization metasurface operating at 28 GHz and 38 GHz is proposed to enhance millimeter-wave transmission through glass.
Wen Fu, Igor Syrytsin, Rocio Rodriguez Cano, Peiye Liu, Andrey Kobyakov, Gert Fround Pedersen, Shuai Zhang   +6 more
doaj   +1 more source

Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds

Advanced Functional Materials, EarlyView.
This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley   +1 more source

Transparent and Ultra-Thin Flexible Checkerboard Metasurface for Radar–Infrared Bi-Stealth

Sensors
This paper proposed a single-layer checkerboard metasurface with simultaneous wideband radar cross-section (RCS) reduction characteristics and low infrared (IR) emissivity.
Qi Chang, Jinzu Ji, Ke Chen, Wenxing Wu, Yunpeng Ma   +4 more
doaj   +1 more source

Quasi-Periodic Dendritic Metasurface for Integral Operation in Visible Light

Molecules, 2020
A reflective metasurface model composed of silver dendritic units is designed in this study. The integral property of this metasurface, which consists of an upper layer of dendritic structures, a silica spacer, and a bottom silver substrate was ...
Huan Chen, Di An, Xiaopeng Zhao
doaj   +1 more source