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Materials 2017, 10(9), 1046; doi:10.3390/ma10091046

Metasurfaces Based on Phase-Change Material as a Reconfigurable Platform for Multifunctional Devices

1
Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
2
Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
*
Author to whom correspondence should be addressed.
Received: 20 June 2017 / Revised: 2 September 2017 / Accepted: 4 September 2017 / Published: 6 September 2017
(This article belongs to the Special Issue Advance in Plasmonics and Metamaterials)
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Abstract

Integration of phase-change materials (PCMs) into electrical/optical circuits has initiated extensive innovation for applications of metamaterials (MMs) including rewritable optical data storage, metasurfaces, and optoelectronic devices. PCMs have been studied deeply due to their reversible phase transition, high endurance, switching speed, and data retention. Germanium-antimony-tellurium (GST) is a PCM that has amorphous and crystalline phases with distinct properties, is bistable and nonvolatile, and undergoes a reliable and reproducible phase transition in response to an optical or electrical stimulus; GST may therefore have applications in tunable photonic devices and optoelectronic circuits. In this progress article, we outline recent studies of GST and discuss its advantages and possible applications in reconfigurable metadevices. We also discuss outlooks for integration of GST in active nanophotonic metadevices. View Full-Text
Keywords: metamaterial; chalcogenide; phase-change-material-based memory; germanium antimony telluride; tunable; phase transition metamaterial; chalcogenide; phase-change-material-based memory; germanium antimony telluride; tunable; phase transition
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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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Raeis-Hosseini, N.; Rho, J. Metasurfaces Based on Phase-Change Material as a Reconfigurable Platform for Multifunctional Devices. Materials 2017, 10, 1046.

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