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, non-invasive, and affordable way of characterizing suspended graphene devices. We exploit Newton rings interference patterns to study the deformation of a double-layer graphene drum 13.2 micrometer 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.
@article{arxiv.1608.04865,
title = {Colorimetry technique for scalable characterization of suspended graphene},
author = {Santiago J. Cartamil-Bueno and Peter G. Steeneken and Alba Centeno and Amaia Zurutuza and Herre S. J. van der Zant and Samer Houri},
journal= {arXiv preprint arXiv:1608.04865},
year = {2016}
}