Precision friction measurement between ultrathin wire and microprobe

M. A. Salam Akanda, H. Tohmyoh, M. Saka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this study, using an experimental technique based on small-span bending, the friction behaviors of ultrathin Pt wires with the tungsten microprobes have been reported. In the technique, friction force for sliding of a simply supported wire under bending load applied by closely positioned two opposite probes is measured by a microforce sensor. The force sensor is a capacitive detection type double-beam passive cantilever. Specificity of the microforce sensor provides the technological advantage for precise measurement of friction and normal contact forces sequentially under the observation by a high-resolution digital microscope. Static and kinetic frictions due to externally applied force, internal adhesive force and relative motion are successfully determined. Furthermore, the measured friction in wire-probe contact is used in the determination of the mechanical properties of the wire material.

Original languageEnglish
Pages (from-to)189-194
Number of pages6
JournalSensors and Actuators A: Physical
Issue number1
Publication statusPublished - 2011 Dec


  • Bending test
  • Friction coefficient
  • Microforce
  • Microprobe
  • Static and kinetic frictions
  • Ultrathin wire


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