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Previous statistical studies on the mechanical properties of chemical-vapor-deposited (CVD) suspended graphene membranes have been performed by means of measuring individual devices or with techniques that affect the material. Here, we present a colorimetry technique as a parallel, noninvasive, and affordable way of characterizing suspended graphene devices. We exploit Newton’s rings interference patterns to study the deformation of a double-layer graphene drum 13.2 μm in diameter when a pressure step is applied. By studying the time evolution of the deformation, we find that filling the drum cavity with air is 2–5 times slower than when it is purged.
Original languageEnglish
Pages (from-to)6792-6796
Number of pages5
JournalNano Letters: a journal dedicated to nanoscience and nanotechnology
Volume16
DOIs
Publication statusPublished - 6 Oct 2016

    Research areas

  • colorimetry, characterization technique, suspended, graphene, gas diffusion, pressure sensor

ID: 11372840