Journal
APPLIED PHYSICS LETTERS
Volume 79, Issue 23, Pages 3866-3868Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1424047
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The local modification of the electronic states of highly oriented pyrolytic graphite (HOPG) surfaces using highly charged ion (HCI) irradiation has been demonstrated as a promising technique in the design of nanoscale materials. The high potential energy of HCI and subsequent surface treatment by either electron injection from a scanning tunneling microscopy (STM) tip or by He-Cd laser irradiation provide a localized transition from sp(2) to sp(3) hybridization in HOPG, resulting in the formation of nanoscale diamond-like structures (nanodiamond). It is of interest that a single impact of HCI creates one nanodiamond structure without inducing any defects in the area surrounding the impact region, suggesting potential applications of HCI in nanoscale material processing. (C) 2001 American Institute of Physics.
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