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Perfect absorbers for electromagnetic wave, based on metamaterials

Title
Perfect absorbers for electromagnetic wave, based on metamaterials
Author
이영백
Keywords
Metamaterials; Metamaterial perfect absorbers (MMPAs); Multi-band MMPAs; Broadband MMPAs; Polarization-independent MMPAs; current status of MMPAs; Future of MMPAs
Issue Date
2015-10
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 67, NO 7, Page. 1095-1109
Abstract
Metamaterials (MMs), which are not existing in nature, but artificially-engineered materials for controlling electromagnetic wave. MMs have attracted more and more research attentions, since they have shown greatly novel properties such as left-handed behavior, negative refractive index, classical analog of electromagnetically-induced transparency, and extraordinary transmission. Among MMs, MM perfect absorbers (MMPAs), which are useful to enhance the efficiency in capturing solar energy and applied to various application areas, have been rapidly developed. In general, the structure of MMPAs is very simple, which consist of three layers: patterned conductor layer, which is used for minimizing the reflection by impedance matching, dielectric layer and continuous conductor layer for blocking the transmission. In addition, the unit-cell size of general MM absorbers is only 1/3-1/5 of the working wavelength of incident electromagnetic wave. Nevertheless, the properties of general MMPAs are in problems of the absorption only at specific frequency, the narrow absorption band, the polarization sensitivity and so on. In this review paper, the introduction of recent researches in the field of MMPAs operating in different frequency ranges is presented. Moreover, the researches on the improved electromagnetic properties are discussed, which comprise multi-band, broadband, tunable, polarization-insensitive, and wide-incident-angle MMPAs. The perspectives and the future works for the further investigations and the various real applications of MMPAs are also presented.
URI
https://link.springer.com/article/10.3938%2Fjkps.67.1095http://hdl.handle.net/20.500.11754/28156
ISSN
0374-4884; 1976-8524
DOI
10.3938/jkps.67.1095
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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