Electrically driven reprogrammable phase-change metasurface reaching 80% efficiency

  title={Electrically driven reprogrammable phase-change metasurface reaching 80\% efficiency},
  author={Sajjad Abdollahramezani and Omid Hemmatyar and Mohammad Taghinejad and Hossein Taghinejad and Alexander E. Krasnok and Ali A. Eftekhar and Christian Teichrib and Sanchit Deshmukh and Mostafa A El-Sayed and Eric Pop and Matthias Wuttig and Andrea Al{\'u} and Wenshan Cai and Ali Adibi},
  journal={Nature Communications},
Phase-change materials (PCMs) offer a compelling platform for active metaoptics, owing to their large index contrast and fast yet stable phase transition attributes. Despite recent advances in phase-change metasurfaces, a fully integrable solution that combines pronounced tuning measures, i.e., efficiency, dynamic range, speed, and power consumption, is still elusive. Here, we demonstrate an in situ electrically driven tunable metasurface by harnessing the full potential of a PCM alloy… 
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The unique material properties, structural transformation, and thermo-optic effects of well-established classes of chalcogenide PCMs are outlined and the emerging deep learning-based approaches for the optimization of reconfigurable MSs and the analysis of light-matter interactions are discussed.
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Materials whose optical properties can be reconfigured are crucial for photonic applications such as optical memories. Phase-change materials offer such utility and here recent progress is reviewed.
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  • Thomas de Quincey
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    The Works of Thomas De Quincey, Vol. 1: Writings, 1799–1820
  • 2000
In supernova (SN) spectroscopy relatively little attention has been given to the properties of optically thick spectral lines in epochs following the photosphere’s recession. Most treatments and
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To demonstrate full control over the flow of light, nanophotonic digital patterning is introduced as a previously unexplored conceptual approach with a footprint orders of magnitude smaller than state-of-the-art interferometer meshes, which enables a wealth of possibilities in high-density reconfiguration of optical functionalities on silicon chip.
Rewritable color nanoprints in antimony trisulfide films
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The master programme in Applied Geology aims to provide comprehensive knowledge based on various branches of Geology, with special focus on Applied geology subjects in the areas of Geomorphology, Structural geology, Hydrogeology, Petroleum Geologists, Mining Geology), Remote Sensing and Environmental geology.