Friction force microscopy in ultrahigh vacuum: An atomic-scale study on KBr(001)

R. Lüthi, E. Meyer, L. Howald, M. Bammerlin, H. J. Güntherodt, T. Gyalog, Thomas R Huser

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We present an atomic-scale study on friction performed by a bidirectional atomic force microscope operated in ultrahigh vacuum. Experiments on surfaces of in situ cleaved KBr crystals are presented. On a μm scale the cleavage structure with monoatomic steps of 3.5 ± 0.3 Å is revealed. On the atomically flat terraces, atomic-scale resolution is achieved. The resolved square lattice shows a periodicity of 4.7 Å and corrugations of 0.3-0.7 Å and exhibits the cubic symmetry of KBr(001). The lateral (frictional) force map shows all characteristics of the stick-slip movement of the probing tip. From analysis of the friction loops, the kinetic friction force was determined as a function of load. For a load regime of -4 to 10 nN, lateral force corrugations ranging from 1 to 5 nN were found. A comparison with a novel theoretical model is discussed qualitatively.

Original languageEnglish (US)
Pages (from-to)129-138
Number of pages10
JournalTribology Letters
Volume1
Issue number2-3
StatePublished - 1995
Externally publishedYes

Fingerprint

Ultrahigh vacuum
ultrahigh vacuum
Microscopic examination
friction
Friction
microscopy
Stick-slip
kinetic friction
Microscopes
periodic variations
cleavage
Crystals
Kinetics
slip
microscopes
potassium bromide
symmetry
Experiments
crystals

Keywords

  • AFM/LFM
  • Friction force microscopy
  • Potassium bromide
  • UHV-AFM

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering

Cite this

Lüthi, R., Meyer, E., Howald, L., Bammerlin, M., Güntherodt, H. J., Gyalog, T., & Huser, T. R. (1995). Friction force microscopy in ultrahigh vacuum: An atomic-scale study on KBr(001). Tribology Letters, 1(2-3), 129-138.

Friction force microscopy in ultrahigh vacuum : An atomic-scale study on KBr(001). / Lüthi, R.; Meyer, E.; Howald, L.; Bammerlin, M.; Güntherodt, H. J.; Gyalog, T.; Huser, Thomas R.

In: Tribology Letters, Vol. 1, No. 2-3, 1995, p. 129-138.

Research output: Contribution to journalArticle

Lüthi, R, Meyer, E, Howald, L, Bammerlin, M, Güntherodt, HJ, Gyalog, T & Huser, TR 1995, 'Friction force microscopy in ultrahigh vacuum: An atomic-scale study on KBr(001)', Tribology Letters, vol. 1, no. 2-3, pp. 129-138.
Lüthi R, Meyer E, Howald L, Bammerlin M, Güntherodt HJ, Gyalog T et al. Friction force microscopy in ultrahigh vacuum: An atomic-scale study on KBr(001). Tribology Letters. 1995;1(2-3):129-138.
Lüthi, R. ; Meyer, E. ; Howald, L. ; Bammerlin, M. ; Güntherodt, H. J. ; Gyalog, T. ; Huser, Thomas R. / Friction force microscopy in ultrahigh vacuum : An atomic-scale study on KBr(001). In: Tribology Letters. 1995 ; Vol. 1, No. 2-3. pp. 129-138.
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