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NANOTRIBOLOGY. Feb. 28, 2006 Warren Courtney. Reasons to study nanotribology. To clarify our understanding of macroscopic friction effects Estimated saving >$100 billion year in N. America if improvements in machinery wear can be reduced

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nanotribology

NANOTRIBOLOGY

Feb. 28, 2006

Warren Courtney

reasons to study nanotribology
Reasons to study nanotribology
  • To clarify our understanding of macroscopic friction effects
  • Estimated saving >$100 billion year in N. America if improvements in machinery wear can be reduced
  • Reduction in use of energy and materials if friction can be reduced
  • To understand the friction and wear of magnetic storage devices if target of 1 terabit/6.5 cm2 density and fast download is to be achievable
device for scanning tip tribology
Device for scanning tip tribology
  • Scanning tip usually Si3N4, or Natural Diamond
return to tomlinson model
RETURN TO TOMLINSON MODEL

Scan of friction loop

generated by a scanning

tip moving over a

sodium chloride crystal

slide5
Difference in Nanoscale measurement where tip size affects the coefficient of friction as opposed to cof being a property of two surfaces
  • Figure 1: Effect of tip sizes on friction.
references
REFERENCES
  • www.mat.ethz.ch/research/tribology/nanotribology/
  • http://physicsweb.org/articles/world/18/2
  • grove.ufl.edu/~wgsawyer/MURI/MURI.html
  • Bhuushan, B.Handbook of micro/Nano tribology CRC Press, 1995
  • www.pacificnanotech.com/nanotribology_lubricant-studies.html
  • www.vide.org/evc9/abstracts/pdf/11%20bushan.pdf