Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144780
Title: Reconfigurable ultraviolet and high-energy visible dielectric metamaterials
Authors: Gholipour, Behrad
Piccinotti, Davide
Karvounis, Artemios
MacDonald, Kevin F.
Zheludev, Nikolay I.
Keywords: Science::Physics
Issue Date: 2019
Source: Gholipour, B., Piccinotti, D., Karvounis, A., MacDonald, K. F., & Zheludev, N. I. (2019). Reconfigurable Ultraviolet and High-Energy Visible Dielectric Metamaterials. Nano Letters, 19(3), 1643–1648. doi:10.1021/acs.nanolett.8b04576
Journal: Nano letters
Abstract: Photonic materials with tunable and switchable ultraviolet (UV) to high-energy visible (HEV) optical properties may benefit applications such as sensing, high-density optical memory, beam-steering, adaptive optics, and light modulation. Here, for the first time we demonstrate a nonvolatile switchable dielectric metamaterial operating in the UV-HEV spectral range. Nanograting metamaterials in a layered composite of low-loss ZnS/SiO2 and the chalcogenide phase-change medium germanium-antimony-telluride (Ge2Sb2Te5 or GST) exhibit reflection resonances at UV-HEV wavelengths that are substantially modified by light-induced (amorphous-crystalline) phase transitions in the chalcogenide layer. Despite the presence of the lossy GST, resonance quality factors up to Q ∼ 15 are ensured by the transparency (low losses) of ZnS/SiO2 in the UV-HEV spectral range and values of Q increase as the refractive index of Ge2Sb2Te5 decreases, upon crystallization. Notably, however, this switching leaves resonance spectral positions unchanged.
URI: https://hdl.handle.net/10356/144780
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.8b04576
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.8b04576
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Reconfigurable ultraviolet and high-energy-visible dielectric metamaterials.pdf891.2 kBAdobe PDFView/Open

SCOPUSTM   
Citations 10

28
Updated on Mar 2, 2021

PublonsTM
Citations 10

27
Updated on Mar 7, 2021

Page view(s)

98
Updated on Jan 20, 2022

Download(s)

15
Updated on Jan 20, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.