Results 11 to 20 of about 1,392 (207)
Universal metamaterial absorber
2017 11th International Congress on Engineered Materials Platforms for Novel Wave Phenomena (Metamaterials), 2017 We propose a design for an universal absorber, characterized by a resonance frequency that can be tuned from visible to microwave frequencies independently of the choice of the metal and the dielectrics involved. An almost resonant perfect absorption up to 99.8 % is demonstrated at resonance for all polarization states of light and for a very wide ...
Omeis, F. +4 more
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Dual broadband metamaterial absorber
Optics Express, 2015 We propose polarization-independent and dual-broadband metamaterial absorbers at microwave frequencies. This is a periodic meta-atom array consisting of metal-dielectric-multilayer truncated cones. We demonstrate not only one broadband absorption from the fundamental magnetic resonances but additional broadband absorption in high-frequency range using ...
Kim, Young Ju +5 more
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THz-metamaterial absorbers [PDF]
Advances in Natural Sciences: Nanoscience and Nanotechnology, 2013 An ultrabroad-band metamaterial absorber was investigated in mid-IR regime based on a similar model in previous work. The high absorption of metamaterial was obtained in a band of 8?11.7?THz with energy loss distributed in SiO2, which is appropriate potentially for solar-cell applications.
Van Tuong Pham +6 more
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Lithography-free metamaterial absorbers: opinion
Optical Materials Express, 2022 Although advancement in nanofabrication provides the opportunity to realize nanoscale geometries with high resolutions, the scalability and repeatability issues limit their large-scale applications. Lithography-free metamaterial absorbers (LFMAs) are a potential route for the upscaling of these designs.
Amir Ghobadi +2 more
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Design of metamaterial surfaces with broadband absorbance [PDF]
Optics Letters, 2012 A simple design paradigm for making broad-band ultra-thin plasmonic absorbers is introduced. The absorber's unit cell is composed of sub-units of various sizes, resulting in nearly 100% absorbance at multiple adjacent frequencies and high absorbance over a broad frequency range. A simple theoretical model for designing broad-band absorbers is presented.
Wu, Chihhui, Shvets, Gennady
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Ultra-broadband microwave metamaterial absorber [PDF]
Applied Physics Letters, 2012 A microwave ultra-broadband polarization-independent metamaterial absorber is demonstrated. It is composed of a periodic array of metal-dielectric multilayered quadrangular frustum pyramids. These pyramids possess resonant absorption modes at multi-frequencies, of which the overlapping leads to the total absorption of the incident wave over an ultra ...
Ding, Fei +4 more
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Broadband Metamaterial Absorbers
Advanced Optical Materials, 2018 AbstractThe recent rise of metamaterials opens new opportunities for absorbers due to their designed electrodynamic properties and effects, allowing the creation of materials with effective values of permittivity and permeability that are not available in naturally occurring materials.
Peng Yu +9 more
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An extremely wideband and lightweight metamaterial absorber [PDF]
Journal of Applied Physics, 2015 This paper presents a three-dimensional microwave metamaterial absorber based on the stand-up resistive film patch array. The absorber has wideband absorption, lightweight, and polarization-independent properties. Our design comes from the array of unidirectional stand-up resistive film patches backed by a metallic plane, which can excite multiple ...
Yang, Shen +5 more
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A reconfigurable hyperbolic metamaterial perfect absorber
Nanoscale Advances, 2021 A dynamically reconfigurable perfect absorber operating in the near-infrared region by incorporating chalcogenide glass into hyperbolic metamaterials.
Jitendra K. Behera +3 more
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Evaluating Energy Absorption Performance of Filled Lattice Structures
Advanced Engineering Materials, EarlyView.Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. Highâperformance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney +2 more
wiley +1 more source