Abstract
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 language | English |
|---|---|
| Pages (from-to) | 6792-6796 |
| Number of pages | 5 |
| Journal | Nano Letters: a journal dedicated to nanoscience and nanotechnology |
| Volume | 16 |
| DOIs | |
| Publication status | Published - 6 Oct 2016 |
Bibliographical note
Accepted Author ManuscriptKeywords
- colorimetry
- characterization technique
- suspended
- graphene
- gas diffusion
- pressure sensor