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Showing 1–5 of 5 results
Advanced filters: Author: Umberto Celano Clear advanced filters

  • A metasurface comprising electrically controlled heating units and a phase-change material offer non-volatile and reversible modulation of reflectance by more than fourfold.

    • Yifei Wang
    • Patrick Landreman
    • Mark L. Brongersma
    Research
    Nature Nanotechnology
    Volume: 16, P: 667-672

  • By harnessing the excitonic resonances of a monolayer of WS2 in the visible spectral range, large-area, actively tunable and atomically thin optical lenses can be realized.

    • Jorik van de Groep
    • Jung-Hwan Song
    • Mark L. Brongersma
    Research
    Nature Photonics
    Volume: 14, P: 426-430

  • Conventional memory devices are not disposable as they are mostly composed of non-renewable, non-biodegradable and some toxic materials, causing a serious damage for ecological system when they are emitted to the environment. Here we demonstrate an environment-friendly, disposable nonvolatile memory device composed of 99.3 vol.% nanocellulose. Our device consists of a nanocellulose-based resistive-switching layer and nanopaper substrate. The device exhibited the nonvolatile resistive switching with the capability of multilevel storage and the potential scalability down to single nanofiber level. Furthermore, the biodegradability of our memory device was confirmed by burying it into the natural soil for 26 days.

    • Umberto Celano
    • Kazuki Nagashima
    • Takeshi Yanagida
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e310