Nitrogen assisted etching of graphene layers in a scanning electron microscope
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2011Citation:
Fox, D, O'Neill, A, Zhou, D, Boese, M, Coleman, JN, Zhang, HZ, Nitrogen assisted etching of graphene layers in a scanning electron microscope, Applied Physics Letters, 98, 24, 2011, 243117Download Item:
Nitrogen assisted etching of graphene layers in a scanning electron microscope.pdf (Published (publisher's copy) - Peer Reviewed) 432.1Kb
Abstract:
We describe the controlled patterning of nanopores in graphene layers by using the low-energy (<10?keV) focused electron beam in a scanning electron microscope. Regular nanometer-sized holes can be fabricated with the presence of nitrogen gas. The effect of the gas pressure, beam current, and energy on the etching process are investigated. Transmission electron microscopy, coupled with plasmon energy loss imaging, reveals the microstructure modification of the etched graphene. A nitrogen-ion assisted etching mechanism is proposed for the controlled patterning.
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Grant Number
Science Foundation Ireland (SFI)
07/SK/I1220a
Irish Research Council for Science and Engineering Technology (IRCSET)
Higher Education Authority (HEA)
Author's Homepage:
http://people.tcd.ie/colemajhttp://people.tcd.ie/hozhang
http://people.tcd.ie/foxd6
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Applied Physics Letters98
24
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Condensed matter physics, GrapheneSubject (TCD):
Nanoscience & MaterialsDOI:
http://dx.doi.org/10.1063/1.3601467Licences: