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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 60: Focus: Two Dimensional Functional Materials II

CPP 60.1: Invited Talk

Thursday, March 10, 2016, 15:00–15:30, H51

Evolution of mono- and bilayer graphene in chemical vapor deposition and the thinnest feasible porous membranes for ultimate mass transport — •Hyung Gyu Park — Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland

Graphene as the seminary 2D material poses great potential in many applications for its electronic, thermal, optical and mechanical properties unique and superior to other materials. Today a majority of technological applications use graphene produced via chemical vapor deposition and transferred onto destination substrates. This talk will present overview and our results of the growth of mono- and bilayer graphene on copper foils, leading to a discussion on kinetics, energetics and mechanisms of the graphene formation on copper. An interesting demonstration of the thinnest feasible porous membranes by use of our graphene illustrates the promises that 2D materials pose. Gas transport across the 2D porous membrane shows a wide range of transport mechanisms from free molecular to transition to continuum dynamics. Water transport measurement agrees well with a capillarity effect and an orifice theory. Discussion on technological implications will follow.