Results 21 to 30 of about 27,248 (265)

Bandwidth-tunable absorption enhancement of visible and near-infrared light in monolayer graphene by localized plasmon resonances and their diffraction coupling

open access: yesResults in Physics, 2023
Bandwidth-tunable light absorption enhancement in monolayer graphene is practically important for graphene-based photoelectric devices. Especially, it is still a huge challenge to achieve high-efficiency graphene absorption with extremely narrow sub ...
Jing Chen   +8 more
doaj   +1 more source

Microwave All-Dielectric Metamaterial Design of FeSiAl/MWCNT Composite for Low-Frequency Broadband-Absorbing Properties

open access: yesMetals, 2023
FeSiAl flakes were fabricated by vibrating ball milling the FeSiAl ribbons. And the microwave absorption properties of FeSiAl flakes were improved by doping the multi-wall carbon nanotubes (MWCNTs) with different mass concentrations.
Xiaokun Wang   +6 more
doaj   +1 more source

Investigating the Broadband Microwave Absorption of Nanodiamond Impurities [PDF]

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2015
Broadband microwave complex permittivity measurements of nanodiamond powders are presented. Previous studies show that measurements of dielectric loss strongly correlate with the presence of nondiamond surface impurities. In this study, the frequency dependence of these losses is investigated using the microwave cavity perturbation (MCP) and broadband ...
Jerome A. Cuenca   +4 more
openaire   +1 more source

Ultra-Broadband Infrared Absorbers Using Iron Thin Layers

open access: yesIEEE Access, 2020
We theoretically proposed an ultra-broadband infrared light absorber and demonstrated that a high absorption could be obtained in the range of ultra-broadband infrared light using the iron thin layers.
Jing Liu   +6 more
doaj   +1 more source

Resonance absorption of a broadband laser pulse [PDF]

open access: yesPhysics of Plasmas, 2018
Broad bandwidth, infrared light sources have the potential to revolutionize inertial confinement fusion (ICF) by suppressing laser-plasma instabilities. There is, however, a tradeoff: The broad bandwidth precludes high efficiency conversion from the infrared to the ultraviolet, where laser-plasma interactions are weaker. Operation in the infrared could
J. P. Palastro   +7 more
openaire   +2 more sources

A polarization-insensitive broadband terahertz absorber with a multilayer structure

open access: yesResults in Physics, 2018
In this paper, a polarization-insensitive broadband terahertz absorber (PBTA) is presented and demonstrated, which can realize a polarization-insensitive, and broadband perfect absorption in the terahertz regime.
Hai-Feng Zhang   +4 more
doaj   +1 more source

Polarization-Insensitive Broadband THz Absorber Based on Circular Graphene Patches

open access: yesNanomaterials, 2021
A polarization-insensitive broadband terahertz absorber based on single-layer graphene metasurface has been designed and simulated, in which the graphene metasurface is composed of isolated circular patches.
Jiajia Qian   +6 more
doaj   +1 more source

Plasmonic absorbers for multispectral and broadband absorption [PDF]

open access: yesSPIE Proceedings, 2012
We present polarization dependent multispectral and broadband plasmonic absorbers in the visible spectrum. The spectral characteristics of these structures are tunable over a broad spectrum. Experimental results are verified with the FDTD and RCWA analysis methods.
Ayaş, Sencer   +4 more
openaire   +2 more sources

Recoverable Broadband Absorption Based on Ultra-Flexible Meta-Surfaces

open access: yesCrystals, 2022
In this work, we demonstrated a tunable metamaterial perfect absorber (MPA) with broadband absorption by tuning the different states of flexible sandwiched structures (graphene conductive ink/rubber/metallic layers). The broadband absorption spectrum was
Pham Duy Tan   +8 more
doaj   +1 more source

Broadband terahertz metamaterial absorber with two interlaced fishnet layers

open access: yesAIP Advances, 2018
The realization of broadband absorption in the terahertz regime is of significant interest in high-sensitive signal detection and modulation. Previously, multi-layer metamaterials have been proposed and demonstrated to expand the absorption bandwidth by ...
Siyu Tan   +5 more
doaj   +1 more source

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