Results 61 to 70 of about 188,571 (367)

Separable metamaterials: analytical ab-initio homogenization and chirality

, 2016
We investigate the ab-initio homogenization of separable metamaterials with factorized dielectric permittivity profile which can be achieved through suitable grey-scale permittivity design techniques.
Ciattoni, Alessandro, Rago, Domenico, Rizza, Carlo   +2 more
core   +1 more source

Bloch-mode analysis for retrieving effective parameters of metamaterials [PDF]

, 2012
We introduce a new approach for retrieving effective parameters of metamaterials based on the Bloch-mode analysis of quasi-periodic composite structures.
Andryieuski, Andrei, Ha, Sangwoo, Kivshar, Yuri S., Lavrinenko, Andrei V., Sukhorukov, Andrey A.   +4 more
core   +3 more sources

Ultrastiff metamaterials generated through a multilayer strategy and topology optimization

Nature Communications
Metamaterials composed of different geometrical primitives have different properties. Corresponding to the fundamental geometrical forms of line, plane, and surface, beam-, plate-, and shell-based lattice metamaterials enjoy many advantages in many ...
Yang Liu, Yongzhen Wang, Hongyuan Ren, Zhiqiang Meng, Xueqian Chen, Zuyu Li, Liwei Wang, Wei Chen, Yifan Wang, Jianbin Du   +9 more
semanticscholar   +1 more source

Programmable gear-based mechanical metamaterials

Nature Materials, 2022
Elastic properties of classical bulk materials can hardly be changed or adjusted in operando, while such tunable elasticity is highly desired for robots and smart machinery.
X. Fang, Jihong Wen, Li Cheng, Dianlong Yu, Hongjia Zhang, P. Gumbsch   +5 more
semanticscholar   +1 more source

Time-varying optical vortices enabled by time-modulated metasurfaces

Nanophotonics, 2020
In this paper, generation of optical vortices with time-varying orbital angular momentum (OAM) and topological charge is theoretically demonstrated based on time-modulated metasurfaces with a linearly azimuthal frequency gradient.
Barati Sedeh Hooman, Salary Mohammad Mahdi, Mosallaei Hossein   +2 more
doaj   +1 more source

Terahertz metamaterials on free-standing highly-flexible polyimide substrates

, 2008
We have fabricated resonant terahertz metamaterials on free standing polyimide substrates. The low-loss polyimide substrates can be as thin as 5.5 micron yielding robust large-area metamaterials which are easily wrapped into cylinders with a radius of a ...
A C Strikwerda, C M Bingham, Hu Tao, K Fan, R D Averitt, W J Padilla, Williams G P, Xin Zhang, Zhang X-C   +8 more
core   +1 more source

Optical Nanotransmission Lines: Synthesis of Planar Left-Handed Metamaterials in the Infrared and Visible Regimes [PDF]

, 2006
Following our recent theoretical development of the concept of nano-inductors, nano-capacitors and nano-resistors at optical frequencies and the possibility of synthesizing more complex nano-scale circuits, here we theoretically investigate in detail the
Alù, Alù, Alù, Andrea Alù, El-Kady, Eleftheriades, Engheta, Engheta, Liu, Lohmann, Maier, Nader Engheta, O'Brien, Pendry, Podolskiy, Povinelli, Quinten, Shelby, Shvets, Shvets, Takahara, Tretyakov, Veselago, Yaghjian   +23 more
core   +3 more sources

Long-metallic-strip array with parasitic rings: an efficient metasurface for dual-broadband electromagnetic window at large angles

Nanophotonics
The long-metallic-strip (LMS) array proposed by J. B. Pendry has been widely studied in electromagnetic windows. However, it could only work for the single-band window, not the dual-band one, due to the plasma-like oscillation attenuating with increasing
Li Tiefu, Chen Jinwei, Jia Yuxiang, Fu Xinmin, Han Yajuan, Yang Jie, Liu Zhaotang, Ding Chang, Feng Cunqian, Wang Jiafu   +9 more
doaj   +1 more source

Dielectric Metamaterials with Toroidal Dipolar Response

, 2014
Toroidal multipoles are the terms missing in the standard multipole expansion; they are usually overlooked due to their relatively weak coupling to the electromagnetic fields.
Basharin, Alexey A., Economou, Eleftherios N., Fedotov, Vassili A., Kafesaki, Maria, Savinov, Vassili, Soukoulis, Costas M., Zheludev, Nikolay I.   +6 more
core   +2 more sources

Metamaterials for Ballistic Electrons [PDF]

, 2007
The paper presents a metamaterial for ballistic electrons, which consists of a quantum barrier formed in a semiconductor with negative effective electron mass.
D. Dragoman, Dragoman M., M. Dragoman
core   +2 more sources