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Nanoscale. 2014 Jul 7;6(13):7249-54. doi: 10.1039/c4nr01838a.

High-yield fabrication of nm-size gaps in monolayer CVD graphene.

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Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland.


Herein we demonstrate the controlled and reproducible fabrication of sub-5 nm wide gaps in single-layer graphene electrodes. The process is implemented for graphene grown via chemical vapor deposition using an electroburning process at room temperature and in vacuum. A yield of over 95% for the gap formation is obtained. This approach allows producing single-layer graphene electrodes for molecular electronics at a large scale. Additionally, from Raman spectroscopy and electroburning carried out simultaneously, we can follow the heating process and infer the temperature at which the gap formation happens.


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