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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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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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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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Multiband terahertz metamaterial absorber
Chinese Physics B, 2011This paper reports the design of a multiband metamaterial (MM) absorber in the terahertz region. Theoretical and simulated results show that the absorber has four distinct and strong absorption points at 1.69, 2.76, 3.41 and 5.06 THz, which are consistent with 'fingerprints' of some explosive materials.
Chao Gu +5 more
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Multiband Frequency Metamaterial Absorber
2019 International Conference on Advanced Electrical Engineering (ICAEE), 2019In this work, we design a multiband frequency metamaterial absorber. The structure is composed of several layers of frequency selective metasurfaces. Each metasurface consists of a periodic arrangement identical unit cells. Each unit cell has two behaviors controlled by an external command system. According to the external command system stats (ON/OFF)
Khedidja Bouras +2 more
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Metamaterial-based perfect absorbers
Journal of Electromagnetic Waves and Applications, 2014Metamaterials are artificially-engineered materials, possessing properties which are not readily observable in materials existing in nature. Since they show very novel properties such as left-handed behavior, negative refractive index, classical analog of electromagnetically-induced transparency, extraordinary transmission, negative Doppler effect, and
J.Y. Rhee +4 more
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Complementary metamaterial infrared absorber
2013 International Conference on Optical MEMS and Nanophotonics (OMN), 2013Complementary metamaterial based infrared (IR) absorber using complementary metal oxide semiconductor (CMOS) compatible material is presented. The robustness of the proposed device is ensured by studying the effect of fabrication deviation on the device performance. The measured absorption was 70% in the near IR region.
Prakash Pitchappa +3 more
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Tailored metamaterial perfect absorber
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2015Complete absorption of light which has been recently demonstrated in metamaterials has drawn the attention of the scientists because of its potential application in harvesting energy and sensors. Controlling the absorption band-width, peak position and intensity are some of the essential factors in metamaterial absorbers.
M. K. Hedayati +3 more
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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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Metamaterial Based Microwave Absorber
2022Metamaterials are structures with extraordinary properties such as artificial geometryand negative refraction. In recent years, these materials have been used to improvethe performance of various microwave devices such as antenna, sensor, cloak,polarization converter with the advantages of easy production.
Albasry, Fadı Alahmed +1 more
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