Results 81 to 90 of about 188,571 (367)

Nontrivial nonradiating all-dielectric anapole

Scientific Reports, 2017
Dynamic anapole is a promising element for future nonradiating devices, such as cloaked sources and sensors, quantum emitters, and especially the sources for observing dynamic Aharonov-Bohm effect. However, the anapole response can be damped by the Joule
Nikita A. Nemkov, Ivan V. Stenishchev, Alexey A. Basharin   +2 more
doaj   +1 more source

Second harmonic generation in amorphous silicon-on-silica metamaterial

APL Photonics, 2021
We demonstrate second harmonic generation by using an amorphous silicon metamaterial fabricated on the tip of an optical fiber that collects the generated light.
Jie Xu, Eric Plum, Vassili Savinov, Nikolay I. Zheludev   +3 more
doaj   +1 more source

Floquet metamaterials

eLight, 2022
Recent progress in nanophotonics and material science has inspired a strong interest in optically-induced material dynamics, opening new research directions in the distinct fields of Floquet matter and time metamaterials.
S. Yin, E. Galiffi, A. Alú
semanticscholar   +1 more source

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

Advanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina, Luke Alexander Turnbull, Weijie Xu, Markus König, Paul Simon, Wilder Carrillo‐Cabrera, Amalio Fernández‐Pacheco, Uri Vool, Dieter Suess, Claas Abert, Vladimir M. Fomin, Claire Donnelly   +11 more
wiley   +1 more source

Focusing Microwaves in the Fresnel Zone With a Cavity-Backed Holographic Metasurface

IEEE Access, 2018
We present the design and experimental demonstration of a cavity-backed, holographic metasurface capable of focusing microwaves in the Fresnel zone. The circular cavity consists of two stacked plates: microwaves are injected into the bottom plate via a ...
Vinay R. Gowda, Mohammadreza F. Imani, Timothy Sleasman, Okan Yurduseven, David R. Smith   +4 more
doaj   +1 more source

Microwatt Volatile Optical Bistability via Nanomechanical Nonlinearity

Advanced Science, 2023
Metastable optically controlled devices (optical flip‐flops) are needed in data storage, signal processing, and displays. Although nonvolatile memory relying on phase transitions in chalcogenide glasses has been widely used for optical data storage ...
Dimitrios Papas, Jun‐Yu Ou, Eric Plum, Nikolay I. Zheludev   +3 more
doaj   +1 more source

Enhanced parametric processes in binary metamaterials

, 2005
We suggest double-resonant (binary) metamaterials composed of two types of magnetic resonant elements, and demonstrate that in the nonlinear regime such metamaterials provide unique possibilities for phase-matched parametric interaction and enhanced ...
Ilya V. Shadrivov, Maxim V. Gorkunov, Shadrivov I. V., Veselago V. G., Yuri S. Kivshar   +4 more
core   +1 more source

Applicability of point dipoles approximation to all-dielectric metamaterials [PDF]

, 2015
All-dielectric metamaterials consisting of high-dielectric inclusions in a low-dielectric matrix are considered as a low-loss alternative to resonant metal-based metamaterials.
Andryieuski, A., Kuznetsova, S. M., Lavrinenko, A. V.   +2 more
core   +2 more sources

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Pomb@Co3O4-based composites for ultra-wideband microwave absorption: A multi-scale perspective from micro-, meso- and meta-structure

Materials & Design
Microwave absorbing materials (MAMs) are used to prevent electromagnetic pollution and enhance equipment stealth. However, their limited absorption intensity and narrow effective bandwidth restrict their applicability.
Guodong Han, Yudeng Wang, Zhaotang Liu, Song Zhao, Junxiang Zhou, Bo Feng, Sai Sui, Xiaoxia Tian, Jun Wang, Jiafu Wang, Shaobo Qu   +10 more
doaj   +1 more source