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Free-standing subnanometer graphite sheets
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DOI：10.1063/1.1782253.png)
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摘要
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Free-standing graphite sheets with thickness less than 1 nm, carbon nanosheets, were synthesized on a variety of substrates by radio-frequency plasma-enhanced chemical vapor deposition without any catalyst or special substrate treatment. The nanosheets consist of one to three graphene layers with a large smooth surface topography, standing roughly vertical to the substrate. Due to the atomic thickness and corrugated nature of nanosheets, low-energy vibrational modes are present in the Raman spectra. The low turn-on field of 4.7 V/mum for electron field emission suggests that the carbon nanosheets could be used as a potential edge emitter. (C) 2004 American Institute of Physics.
Keyword:
FIELD-EMISSION
RAMAN-SCATTERING
LATTICE-DYNAMICS
CARBON
DIAMOND
FILMS
SPECTRUM
MODES
期刊
IF:
3.6
论文数:
10.4W
被引数:
17.8W
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