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Title: All-dielectric phase-change reconfigurable metasurface
Authors: Karvounis, Artemios
Gholipour, Behrad
MacDonald, Kevin F.
Zheludev, Nikolay I.
Keywords: Refractive index
Issue Date: 2016
Source: Karvounis, A., Gholipour, B., MacDonald, K. F., & Zheludev, N. I. (2016). All-dielectric phase-change reconfigurable metasurface. Applied Physics Letters, 109(5), 051103-.
Series/Report no.: Applied Physics Letters
Abstract: We harness non-volatile, amorphous-crystalline transitions in the chalcogenide phase-change medium germanium antimony telluride (GST) to realize optically-switchable, all-dielectric metamaterials. Nanostructured, subwavelength-thickness films of GST present high-quality resonances that are spectrally shifted by laser-induced structural transitions, providing reflectivity and transmission switching contrast ratios of up to 5:1 (7 dB) at visible/near-infrared wavelengths selected by design.
ISSN: 0003-6951
DOI: 10.1063/1.4959272
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2016 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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