title: Colorimetry Technique for Scalable Characterization of Suspended Graphene.
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.
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology , Lorentzweg 1, 2628CJ, Delft, The Netherlands.
authors.forename: Santiago J
authors.initials: SJ
authors.lastname: Cartamil-Bueno
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology , Lorentzweg 1, 2628CJ, Delft, The Netherlands.
authors.forename: Peter G
authors.initials: PG
authors.lastname: Steeneken
authors.affiliation: Graphenea SA , 20018 Donostia-San Sebastián, Spain.
authors.forename: Alba
authors.initials: A
authors.lastname: Centeno
authors.affiliation: Graphenea SA , 20018 Donostia-San Sebastián, Spain.
authors.forename: Amaia
authors.initials: A
authors.lastname: Zurutuza
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology , Lorentzweg 1, 2628CJ, Delft, The Netherlands.
authors.forename: Herre S J
authors.initials: HS
authors.lastname: van der Zant
authors.affiliation: Kavli Institute of Nanoscience, Delft University of Technology , Lorentzweg 1, 2628CJ, Delft, The Netherlands.
authors.forename: Samer
authors.initials: S
authors.lastname: Houri
keywords: Colorimetry; characterization technique; gas diffusion; graphene; pressure sensor; suspended