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A Metasurfaces Review: Definitions and Applications

1
Department of Materials, University of Oxford, Oxford OX5 1PF, UK
2
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
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Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(13), 2727; https://doi.org/10.3390/app9132727
Received: 30 April 2019 / Revised: 7 June 2019 / Accepted: 30 June 2019 / Published: 5 July 2019
(This article belongs to the Special Issue State-of-the-Art Frequency Selective Surfaces (FSSs))
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Abstract

This paper is a critical review of metasurfaces, which are planar metamaterials. Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials. However, owing to their 3D-nature and resonant characteristics, they suffer from manufacturing complexity, losses and are highly dispersive. The 2-dimensional nature of metasurfaces allows ease of fabrication and integration into devices. The phase discontinuity across the metasurface offers anomalous refraction, thereby conserving the good metamaterial properties while still offering the low-loss characteristics. The paper discusses salient features and applications of metasurfaces; wavefront shaping; phase jumps; non-linear metasurfaces; and their use as frequency selective surfaces (FSS). View Full-Text
Keywords: metasurface; frequency selective surface; FSS; metamaterial; review metasurface; frequency selective surface; FSS; metamaterial; review
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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 (CC BY 4.0).
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Bukhari, S.S.; Vardaxoglou, J.; Whittow, W. A Metasurfaces Review: Definitions and Applications. Appl. Sci. 2019, 9, 2727.

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