Dependence of photoinduced surface friction force variation on UV intensity and atmosphere in polycrystalline TiO2 thin films

Naoki Arimitsu, Akira Nakajima, Toshiya Watanabe, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Anatase polycrystalline thin films and a plasma crystallization process were used to investigate the dependence of the photoinduced friction force variation for a TiO2 surface on the UV intensity and atmosphere. Photoinduced friction force variation for UV illumination time was divisible into two stages, decreasing and increasing, where the switching time between these two stages and the degree of variation depended on the UV intensity and atmosphere. The decreasing stage was attributable to the photocatalytic decomposition of organic compound adsorbed onto the surface, whereas the increasing stage was attributed to the capillary effect or an increase in the adsorbed water layer. Results demonstrated that UV intensity and atmosphere controlled the friction force.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume203
Issue number2-3
DOIs
Publication statusPublished - Apr 15 2009
Externally publishedYes

Keywords

  • Atomic force microscopy
  • Friction
  • Polycrystalline thin films
  • Titanium dioxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Dependence of photoinduced surface friction force variation on UV intensity and atmosphere in polycrystalline TiO<sub>2</sub> thin films'. Together they form a unique fingerprint.

Cite this