Nano Archive

Crystallographically selective nanopatterning of graphene on SiO2

Nemes-Incze, Peter and Magda, Gabor and Kamaras, Katalin and Biro, Laszlo Peter (2010) Crystallographically selective nanopatterning of graphene on SiO2. Nano Research, 3 (2). pp. 110-116.

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Abstract

Graphene has many advantageous properties, but its lack of an electronic band gap makes this two-dimensional material impractical for many nanoelectronic applications, for example, field-effect transistors. This problem can be circumvented by opening up a confinement-induced gap, through the patterning of graphene into ribbons having widths of a few nanometres. The electronic properties of such ribbons depend on both their size and the crystallographic orientation of the ribbon edges. Therefore, etching processes that are able to differentiate between the zigzag and armchair type edge terminations of graphene are highly sought after. In this contribution we show that such an anisotropic, dry etching reaction is possible and we use it to obtain graphene ribbons with zigzag edges. We demonstrate that the starting positions for the carbon removal reaction can be tailored at will with precision.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8227
Deposited By:JNCASR
Deposited On:10 Feb 2010 09:11
Last Modified:17 Feb 2010 04:31

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