All-dielectric phase-change reconfigurable metasurface

By A. Karvounis, B. Gholipour, Kevin F. MacDonald, Nikolay I. Zheludev. 2016

252 citations recorded by the source corpus.

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.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/507a0f9b287629ba75cfca667c58e67e49d67bfd

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In Electronic, Optical and Magnetic Materials

In Materials Chemistry

Citations in the corpus

Material platforms for optical metasurfaces (2018, background): “metasurfaces for functional tuning at visible and near-IR wavelengths [256].”
Roadmap on plasmonics (2018, unknown): “As such, it can serve as a material platform for all-dielectric (as opposed to plasmonic) metamaterials, with non-volatile, laser-induced phase transitions enabling resonance switching in nanostructured metasurfaces [72] and reversible greyscale direct-(re)writing of arbitrary flat-optical metadevic”
Roadmap on metasurfaces (2019, background): “Phase-change materials are another recent material platform that hold great promise to enable a moderately fast reconfigurable response [123].”
Spatiotemporal light control with active metasurfaces (2019, background): “Metasurfaces can also be patterned directly into phase-change material itself to switch optical reflection and absorption properties or to generate anomalously reflected beams (58, 59).”