Nano Archive

Electrostatic deposition of graphene

Sidorov, Anton N. and Yazdanpanah, Mehdi M. and Jalilian, Romaneh and Ouseph, P. J. and Cohn, Robert W. and Sumanasekera, G. U. (2007) Electrostatic deposition of graphene. Nanotechnology, 18 (13). pp. 135301-135305. ISSN 09574484


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Loose graphene sheets, one to a few atomic layers thick, are often observed on freshly cleaved HOPG surfaces. A straightforward technique using electrostatic attraction is demonstrated to transfer these graphene sheets to a selected substrate. Sheets from one to 22 layers thick have been transferred by this method. One sheet after initial deposition is measured by atomic force microscopy to be only an atomic layer thick (~0.35 nm). A few weeks later, this height is seen to increase to ~0.8 nm. Raman spectroscopy of a single layer sheet shows the emergence of an intense D band which dramatically decreases as the number of layers in the sheet increase. The intense D band in monolayer graphene is attributed to the graphene conforming to the roughness of the substrate. The disruption of the C-C bonds within the single graphene layer could also contribute to this intense D band as evidenced by the emergence of a new band at 1620 cm-1.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
ID Code:189
Deposited By:Lesley Tobin
Deposited On:13 Nov 2008 16:39
Last Modified:19 Feb 2009 10:52

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