English, Article edition: THE INFLUENCE OF HUMIDITY ON THE SHEAR FORCE BETWEEN TIP AND SAMPLE IN NSOM USING PIEZOELECTRIC FORK TIANHAO ZHANG; ZHEYU FANG; JIANYA ZHENG; ...

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Bookmark: http://trove.nla.gov.au/version/84008
Physical Description
  • article
Language
  • English

Edition details

Title
  • THE INFLUENCE OF HUMIDITY ON THE SHEAR FORCE BETWEEN TIP AND SAMPLE IN NSOM USING PIEZOELECTRIC FORK
Author
  • TIANHAO ZHANG
  • ZHEYU FANG
  • JIANYA ZHENG
  • LIMO GAO
  • HAIDONG YANG
  • MEIRONG YIN
  • JIA YANG
  • YANZHEN LU
  • HUIZHEN KANG
  • DAPENG YANG
  • HUIZHAN YANG
Physical Description
  • article
Notes
  • The distance between tip and sample can be regulated using piezoelectric quartz fork glued with micro optic fiber probe. A biquadrate vibration equation for the forkâprobeâsample system is established to theoretically analyze the relations of the electric current flow through fork versus tipâsample (TâS) distance (Iâd). The Iâd curve and the action distance for shear force are influenced by environmental humidity. The results reinforce the opinions in the earlier works by other researches that the physical origin of the shear force is due to a material filling the tipâsample gap. Furthermore, the intrinsic reasons for shear force damping between tip and sample have been confirmed and developed, i.e. the water and hydrocarbon coupled between optic fiber probe and sample due to the capillary cohesion force.
  • NSOM, shear force, piezo-electric quartz fork
  • RePEc:wsi:srlxxx:v:12:y:2005:i:03:p:355-358
Language
  • English
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