Regensburg 2013 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 11: Poster Session I: Application of thin films; Ion beam induced surface patterns; Ion and electron beam induced processes; Micro- and nanopatterning (jointly with O)

DS 11.4: Poster

Montag, 11. März 2013, 17:00–20:00, Poster B1

Turning graphene into the world's thinnest heater (It's nearly invisible!) — •Siamak Nakhaie, Stefanie Unseld, Jules Dake, and Carl Krill — Institute of Micro and Nanomaterials, Ulm University, Germany

The recent discovery of graphene and characterization of its extraordinary properties have ignited a firestorm of activity across the scientific community and corporate research world --- many believe that graphene represents the basis for the smallest, fastest possible transistor. Of the various production methods currently under investigation, chemical vapor deposition (CVD) appears to be the most feasible for the large-scale production of graphene, and the number of CVD recipes that exist in the literature for single-layer graphene is nearly equal to the number of publications on the subject. We have systematically varied the various CVD process parameters, including temperature, pressure, gas flow rates and concentrations. In doing so, we were able to obtain amorphous, nanocrystalline, multi-layer or single-layer graphene samples. We also demonstrate how graphene can be used as a large-area, transparent electrode. By applying an electric current to our samples under ambient conditions, we were able to heat one square centimeter of single-layer graphene, supported on a glass substrate, to over 220°C.