Results 41 to 50 of about 34,633 (257)

Wide bandwidth and high resolution planar filter array based on DBR-metasurface-DBR structures [PDF]

, 2016
We propose and experimentally demonstrate a planar array of optical bandpass filters composed of low loss dielectric metasurface layers sandwiched between two distributed Bragg reflectors (DBRs).
Arbabi, Amir, Arbabi, Ehsan, Faraon, Andrei, Horie, Yu, Kamali, Seyedeh Mahsa   +4 more
core   +2 more sources

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

Dielectric Resonator Metasurface for Dispersion Engineering

, 2016
We introduce a practical dielectric metasurface design for microwave frequencies. The metasurface is made of an array of dielectric resonators held together by dielectric connections thus avoiding the need of a mechanical support in the form of a ...
Achouri, Karim, Caloz, Christophe, Gupta, Shulabh, Rmili, Hatem, Yahyaoui, Ali   +4 more
core   +1 more source

Wave Scattering by a Cylindrical Metasurface Cavity of Arbitrary Cross-Section: Theory and Applications

, 2018
This paper presents a technique, combining the integral equations (IE) and the Generalized Sheet Transition Conditions (GSTCs) with bianisotropic susceptibility tensors, to compute electromagnetic wave scattering by cylindrical metasurfaces -- forming ...
Caloz, Christophe, Chamanara, Nima, Dehmollaian, Mojtaba   +2 more
core   +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

A 1-bit electrically reconfigurable metasurface stirrer (ERMS) for improved reverberation chambers

Scientific Reports
We propose an innovative electrically reconfigurable metasurface stirrer (ERMS) designed to significantly enhance the performance of reverberation chambers (RCs).
Yewon Kim, Soojeong Kim, Seungkeun Park, Dongho Kim   +3 more
doaj   +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

Spacetime Processing Metasurfaces: GSTC Synthesis and Prospective Applications

, 2016
The paper presents the general concept of spacetime processing metasurfaces, synthesized by generalized sheet transition conditions (GSTCs). It is shown that such metasurfaces can perform multiple simultaneous spatio-temporal processing transformations ...
Achouri, Karim, Caloz, Christophe, Chamanara, Nima, Vahabzadeh, Yousef   +3 more
core   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +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
doaj   +1 more source