Results 41 to 50 of about 5,414 (280)

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

3D Femtosecond Laser Beam Deflection for High‐Precision Fabrication and Modulation of Individual Voxelated PCM Meta‐Atoms

Advanced Science
Optical metasurfaces have found widespread applications in the field of optoelectronic devices. However, achieving dynamic and flexible control over metasurface functionalities, while also developing simplified fabrication methods for metasurfaces ...
Weina Han, Donghui Wei, Biye Peng, Jianhui Jiang, Jintao Tong, Zhehao Xu, Xueyan Zou, Jie Hu, Qian Cheng, Lan Jiang   +9 more
doaj   +1 more source

Multifunctional graphene metasurface to generate and steer vortex waves

Nanoscale Research Letters, 2019
Graphene, an innovated 2D material with atomic thickness, is a very promising candidate and has drawn great attentions in various applications. Graphene metasurface enables dynamic control of various wavefronts, achieving distinguished functionalities ...
Mengyu Wang, Qingsheng Zeng, Li Deng, Botao Feng, Ping Xu   +4 more
doaj   +1 more source

Plasmonic and Dielectric Metasurfaces: Design, Fabrication and Applications [PDF]

Applied Sciences, 2016
Two-dimensional metasurfaces are widely focused on for their ability for flexible light manipulation (phase, amplitude, polarization) over sub-wavelength propagation distances. Most of the metasurfaces can be divided into two categories by the material type of unit structure, i.e., plasmonic metasurfaces and dielectric metasurfaces.
Jian Wang, Jing Du
openaire   +2 more sources

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Anisotropic metasurface with near-unity circular polarization conversion

, 2016
We demonstrate a bi-layer ultrathin anisotropic metasurface which could near-completely convert the circular-polarized electromagnetic wave to its cross polarization.
Wen, Weijia, Wu, Xiaoxiao, Wang, Li, Li Wang, Jingxuan Tian, Meng, Yan, Yan Meng, Dai, Shiwei, Tian, Jingxuan, Shiwei Dai, Xiaoxiao Wu, Weijia Wen   +11 more
core   +1 more source

A Novel Selective Carrier Modulation Technique to Form a Planar Metal Oxide Metasurface

, 2021
Metasurface devices are conventionally fabricated by physically patterning the functional film. We demonstrated a novel fabrication technique to selectively modulate Al-doped ZnO carrier concentration of planar film and form a planar optical ...
Mengali, Sandro, Alpat, Behcet, Zeimpekis, Ioannis, Sandro Mengali, Indiveri, Ivano, Dan Hewak, Kildebro, Lars, de Groot, C.H. (Kees), Ivano Indiveri, C.H. (Kees) de Groot, Gaspari, Matteo, Lars Kildebro, Urbani, Alessandro, Muskens, Otto L., Xiao, Wei, Kai Sun, Javier Aizpurua, Matteo Gaspari, Simeoni, Mirko, Wei Xiao, Otto L. Muskens, Aizpurua, Javier, Mirko Simeoni, Ioannis Zeimpekis, Sun, Kai, Behcet Alpat, Hewak, Dan, Alessandro Urbani   +27 more
core   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Design parameters of free-form color splitters for subwavelength pixelated image sensors

iScience, 2023
Summary: Metasurface-based color splitters are emerging as next-generation optical components for image sensors, replacing classical color filters and microlens arrays.
Sanmun Kim, Chanhyung Park, Shinho Kim, Haejun Chung, Min Seok Jang   +4 more
doaj   +1 more source

Design, Simulation, Fabrication and Characterization of Optical Metasurface [PDF]

, 2019
Optical metasurface is an emerging concept in the field of nano optics, nano photonics, and silicon photonics. It is an idea of creating novel planar optical devices based on space discretization and phase reconstruction method.
Ye, Mao
core