Creation of nanodiamonds by single impacts of highly charged ions upon graphite

T. Meguro, A. Hida, M. Suzuki, Y. Koguchi, H. Takai, Y. Yamamoto, K. Maeda, Y. Aoyagi

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

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 sp2 to sp3 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.

Original languageEnglish
Pages (from-to)3866-3868
Number of pages3
JournalApplied Physics Letters
Volume79
Issue number23
DOIs
Publication statusPublished - 3 Dec 2001

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