Observation of dislocation behavior in graphite by using ultrasonic atomic force microscopy

Toshihiro Tsuji, Hiroshi Irihama, Kazushi Yamanaka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We verify that ultrasonic atomic force microscopy (UAFM) can detect and evaluate subsurface objects with a resolution of around 10 nm. We first show that the resonance frequency of UAFM cantilever shows a measurable change due to subsurface low-elasticity layer by a finite element analysis. We then proved the ability of subsurface imaging in a highly oriented pyrolytic graphite (HOPG) specimen. We found a new type of dislocation motion. As a load was applied to the tip, apparent edge-type dislocations (Frank partial dislocations) moved to the direction of climb over distances of 47 nm and returned to the original position as the load was removed. To explain this motion, we propose a possible model where the extra half-plane of the dislocation is elastically compressed to shorten its length due to the normal load applied by the tip.

Original languageEnglish
Pages (from-to)561-566
Number of pages6
JournalJSME International Journal, Series A: Solid Mechanics and Material Engineering
Volume45
Issue number4
DOIs
Publication statusPublished - 2002 Oct

Keywords

  • Dislocation
  • Edge-type
  • Finite element method
  • Graphite
  • Reversible lateral motion
  • Ultrasonic atomic force microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering

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