Temperature dependence of nanoscale friction investigated with thermal AFM probes

Christian Greiner, Jonathan R. Felts, Zhenting Dai, William Paul King, Robert W. Carpick

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Measurements of nanoscale friction between silicon AFM tips featuring an in-situ solid state heater and silicon substrates (both with native oxide) were performed. The temperature of the heater was varied between room temperature and approximately 650°C. For these temperatures and the silicon substrate, the temperatures at the point of contact are estimated to range from room temperature to approximately 120±20°C. Experiments were carried out in ambient atmosphere (∼30% relative humidity) and under dry nitrogen. Tests under constant load revealed that in the presence of ambient, friction increased with heater temperature whereas it did not change in dry nitrogen. For experiments carried out for different tip velocities (40 to 7800 nm/s), friction decreased with velocity in ambient and did not change in dry nitrogen. Both trends can be explained by thermally-assisted formation of capillary bridges between tip and substrate and the kinetics of capillary condensation under ambient conditions.

Original languageEnglish (US)
Title of host publicationMechanochemistry in Materials Science
Pages13-20
Number of pages8
StatePublished - Dec 1 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 30 2009Dec 4 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1226
ISSN (Print)0272-9172

Other

Other2009 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/30/0912/4/09

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Greiner, C., Felts, J. R., Dai, Z., King, W. P., & Carpick, R. W. (2010). Temperature dependence of nanoscale friction investigated with thermal AFM probes. In Mechanochemistry in Materials Science (pp. 13-20). (Materials Research Society Symposium Proceedings; Vol. 1226).