Free-standing subnanometer graphite sheets

被引:360
作者
Wang, JJ [1 ]
Zhu, MY
Outlaw, RA
Zhao, X
Manos, DM
Holloway, BC
Mammana, VP
机构
[1] Coll William & Mary, Dept Appl Sci, Williamsburg, VA 23187 USA
[2] Int Technol Ctr, Raleigh, NC 27709 USA
关键词
D O I
10.1063/1.1782253
中图分类号
O59 [应用物理学];
学科分类号
摘要
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.
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收藏
页码:1265 / 1267
页数:3
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