Colorimetry Technique for Scalable Characterization of Suspended Graphene
Santiago Cartamil Bueno (TU Delft - QN/Steeneken Lab, Kavli institute of nanoscience Delft)
Peter Steeneken (Kavli institute of nanoscience Delft, TU Delft - QN/Steeneken Lab)
Alba Centeno (Graphenea SA)
Amaia Zurutuza (Graphenea SA)
Herre van der Zant (TU Delft - QN/van der Zant Lab, Kavli institute of nanoscience Delft)
Samer Houri (Kavli institute of nanoscience Delft, TU Delft - QN/van der Zant Lab)
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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.