Energy dissipation of AFM studied by MD/continuum coupling model

Yasuhiro Senda*, Nobuyuki Imahashi, Shuji Shimamura, Janne Blomqvist, Risto M. Nieminen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Computational model for AFM using the coupling method of molecular dynamics (MD)and continuum is proposed in order to investigate mechanism of the observed energy dissipation in AFM. The motion of cantilever is described by a spring, and the atomic interaction between the tip attached on cantilever and surface is calculated by MD method. The motions of the spring and atoms are coupled by the MD/continuum hybrid method. We find that a significantly energy dissipation comes from atomic thermal fluctuation between the tip and surface. To further study this dissipation mechanism, the temperature and frequency dependence of the dissipation is investigated.

Original languageEnglish
Pages (from-to)339-342
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Volume12
DOIs
Publication statusPublished - 19 Jul 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • Atomic force microscopy
  • Computer simulations
  • Molecular dynamics

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