Results 51 to 60 of about 9,186 (292)

Hunting for Monolayer Black Phosphorus with Photoluminescence Microscopy

Photonics
Monolayer black phosphorus (BP) holds great promise for naturally hyperbolic polaritons and correlated states in rectangular moiré superlattices. However, preparing and identifying high-quality monolayer BP are challenging due to its instability and high
Chenghao Pan, Yixuan Ma, Quan Wan, Boyang Yu, Shenyang Huang, Hugen Yan   +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

Broadband angular spectrum differentiation using dielectric metasurfaces

Nature Communications
Signal processing is of critical importance for various science and technology fields. Analog optical processing can provide an effective solution to perform large-scale and real-time data processing, superior to its digital counterparts, which have the ...
Ming Deng, M. Cotrufo, Jian Wang, Jianji Dong, Zhichao Ruan, A. Alú, Lin Chen   +6 more
semanticscholar   +1 more source

Regional proximity effect correction for replicating 28 nm lines/spaces in HSQ as dielectric diffraction gratings with high aspect ratio

Micro and Nano Engineering
With the rapid advances of extreme ultraviolet (EUV) lithography toward ultra-high resolution, characterization technique of EUV resists by interference lithography (IL) for 14-nm node process needs urgent upgrading because of the considerable loss of ...
Qingxin Wu, Wentao Yuan, Qiucheng Chen, Hao Quan, Yifang Chen   +4 more
doaj   +1 more source

Broadband Achromatic Metasurfaces for Longwave Infrared Applications

Nanomaterials, 2021
Longwave infrared (LWIR) optics are essential for several technologies, such as thermal imaging and wireless communication, but their development is hindered by their bulk and high fabrication costs.
Naitao Song, Nianxi Xu, Dongzhi Shan, Yuanhang Zhao, Jinsong Gao, Yang Tang, Qiao Sun, Xin Chen, Yansong Wang, Xiaoguo Feng   +9 more
doaj   +1 more source

Singular graphene metasurfaces [PDF]

EPJ Applied Metamaterials, 2019
The spatial tunability of the electron density in graphene enables the dynamic engineering of metasurfaces in the form of conductivity gratings, which can bridge the momentum gap between incident radiation and surface plasmons. Here, we discuss singular graphene metasurfaces, whose conductivity is strongly suppressed at the grating valleys.
Emanuele Galiffi, John Pendry, Paloma Arroyo Huidobro   +2 more
openaire   +4 more sources

Spatiotemporal light control with active metasurfaces

Science, 2019
Dynamic metasurfaces Optical metasurfaces have opened an entirely new field in the quest to manipulate light. Optical metasurfaces can locally impart changes to the amplitude, phase, and polarization of propagating waves.
A. Shaltout, V. Shalaev, M. Brongersma
semanticscholar   +1 more source

Metasurfaces: physics and applications in wireless communications

National Science Review, 2023
The ever increasing number of wireless devices and systems has led to a crowded spectrum and increased the demand for versatile and multi-functional wireless apparatuses.
V. G. Ataloglou, S. Taravati, G. Eleftheriades   +2 more
semanticscholar   +1 more source

Abnormal beam steering with kirigami reconfigurable metasurfaces

Nature Communications
Dynamically controlling electromagnetic waves at will is highly desired in many applications, but most previously realized mechanically reconfigurable metasurfaces are of restricted wave-control capabilities due to the limited tuning ranges of structural
Guobang Jiang, Yingying Wang, Ziyu Zhang, Weikang Pan, Yizhen Chen, Yang Wang, Xiangzhong Chen, Enming Song, Gaoshan Huang, Qiong He, Shulin Sun, Jizhai Cui, Lei Zhou, Yongfeng Mei   +13 more
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Transmitted electron exposure in electron beam lithography for double-side patterning of bi-layer metasurfaces on a SiNx membrane

Micro and Nano Engineering
Metasheets, composed of two identical metasurfaces closely aligned to each other within a mode-coupling distance on the two opposite sides of a SiNx membrane, are of unique functionalities for effective modulation of electromagnetic waves by nanoscale ...
Jinyu Guo, Yifei Wang, Hao Quan, Shuoqiu Tian, Qiucheng Chen, Wentao Yuan, Qingxin Wu, Kangping Liu, Yifang Chen, Qiong He, Lei Zhou   +10 more
doaj   +1 more source