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Terahertz Metamaterial Absorbers
Advanced Materials Technologies, 2021AbstractTerahertz metamaterial absorbers (TMAs) can efficiently absorb electromagnetic wave in the range of 0.1–10 THz based on the tunable electromagnetic properties of artificially designed unit cells. TMAs can achieve perfect absorption, as well as broad band absorption.
Chuanxin Chen +3 more
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Metamaterial saturable absorber mirror
Optics Letters, 2013We propose a metamaterial saturable absorber mirror at midinfrared wavelengths that can show a saturation of absorption with intensity of incident light and switch to a reflecting state. The design consists of an array of circular metallic disks separated by a thin film of vanadium dioxide (VO(2)) from a continuous metallic film. The heating due to the
Govind, Dayal, S Anantha, Ramakrishna
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Extending the absorbance bandwidth of metamaterial absorber
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012In this paper, we present the design of a polarization insensitive metamaterial absorber (MMA) whose performance is maintained over a wide frequency range. The basic unit cell of a MMA consists of an electric electric-LC resonator and a square loop structure.
Hyung-sub Lee, Hongmin Lee
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2023
In this chapter, the authors discuss metamaterial absorbers. The need for active absorbers and also different types of active absorbers have been listed in detail such as switchable absorber/reflector, switchable absorber, and tunable absorbers. The recent trends and the work investigated by researchers around the globe have also been mentioned in ...
Mehaboob Mujawar, Subuh Pramono
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In this chapter, the authors discuss metamaterial absorbers. The need for active absorbers and also different types of active absorbers have been listed in detail such as switchable absorber/reflector, switchable absorber, and tunable absorbers. The recent trends and the work investigated by researchers around the globe have also been mentioned in ...
Mehaboob Mujawar, Subuh Pramono
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Acoustic Metamaterial Absorbers
2021Porous and fibrous materials provide effective and broadband acoustic absorption at mid/high audible frequencies. However, these traditional treatments result in thick and heavy layers when designed for low frequency audible sound. To overcome these limitations, in the recent years metamaterials have been proposed as an alternative to design sub ...
Jean-Philippe Groby +2 more
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Metamaterial absorbers and their applications
JSAP-OSA Joint Symposia 2017 Abstracts, 2017Recent advances in metamaterials enable us to create unprecedented optical materials, and as a example of such materials, perfect absorptive material surfaces within a certain frequency range were demonstrated. Since the metamaterial absorber offers a unique surface condition with tailored absorption properties, a wide variety of potential applications
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Polarization insensitive terahertz metamaterial absorber
Optics Letters, 2011We present the simulation, implementation, and measurement of a polarization insensitive resonant metamaterial absorber in the terahertz region. The device consists of a metal/dielectric-spacer/metal structure allowing us to maximize absorption by varying the dielectric material and thickness and, hence, the effective electrical permittivity and ...
J, Grant +5 more
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Characterizations of reconfigurable infrared metamaterial absorbers
Optics Letters, 2018We propose four types of metamaterial absorbers (MAs) to have tunable absorption resonance and polarization-dependent/independent, single-band, and dual-band switch characterizations. By tailoring four types of MAs with different heights between top and bottom metal layers, absorption resonance can be modified at a 5.92 μm wavelength, and the ...
Ruijia, Xu, Yu-Sheng, Lin
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Wavelength-tunable microbolometers with metamaterial absorbers
Optics Letters, 2009Microbolometers are modified by metallic resonant absorber elements, leading to an enhanced responsivity at selectable wavelengths. The dissipative energy absorption of tailored metamaterials allows for engineering the response of conventional bolometer microbridges.
Thomas, Maier, Hubert, Brückl
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Design of an ultracompact metamaterial absorber
Microwave and Optical Technology Letters, 2015An effective approach to design an ultracompact metamaterial absorber is presented. The unit cell of the designed absorber is a three-dimensional square frame constructed in FR4 dielectric layer, which can be counted as a combiner of two pairs of interperpendicular split-ring resonators.
Bao-Qin Lin +6 more
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