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Journal of Nanomaterials
Volume 2017 (2017), Article ID 2361042, 18 pages
https://doi.org/10.1155/2017/2361042
Review Article

Metasurfaces-Based Absorption and Reflection Control: Perfect Absorbers and Reflectors

1Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
2Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea

Correspondence should be addressed to Junsuk Rho; rk.ca.hcetsop@ohrsj

Received 8 July 2017; Revised 22 September 2017; Accepted 1 October 2017; Published 6 November 2017

Academic Editor: Jingshi Meng

Copyright © 2017 Trevon Badloe et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the past decade, the realisation of negative index materials has initiated extensive research into metamaterials. Perfect absorbers and reflectors are of particular interest as their usefulness is endless in a range of different fields and devices. Since it was originally shown that a device can achieve unity absorption of electromagnetic waves, it has become a hot area of research to develop perfect absorbers based on polarisation independence and incident angle independence, at a range of frequencies from microwave to optical ones. The amazing performance, flexibility, and tunability of these metamaterials will be discussed here, by presenting the different designs and working mechanisms that have been realised up to now. Their limitations and shortcomings will be addressed and future plans for perfect absorbers and reflectors will be suggested.