Superhydrophilicity on nano-rough carbon surfaces achieved by hyperthermal oxygen-atom beam exposure

Hiroshi Kinoshita, Takashi Nakayama, Naohiro Matsumoto, Nobuo Ohmae

Research output: Contribution to journalLetter

4 Citations (Scopus)

Abstract

In order to investigate a method to increase hydrophilicity on nano-rough carbon surfaces, a nano-rough surface of C60 film and an atomically flat surface of highly oriented pyrolytic graphite (HOPG) were oxidized by hyperthermal oxygen-atom beam exposure and the hydrophilicities of the surfaces were investigated. Superhydrophilicity were achieved on these exposed carbon surfaces, which had low O/C ratio of approximately 28% and surface roughness (Ra) of approximately 3 nm. The direct oxidations on sp2 bonded carbon atoms (basal plane) of these two carbon materials by the exposure of hyperthermal O-atom beam would contribute the superhydrophilicity.

Original languageEnglish
Pages (from-to)3388-3391
Number of pages4
JournalCarbon
Volume49
Issue number10
DOIs
Publication statusPublished - Aug 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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