Frictional duality observed during nanoparticle sliding.

@article{Dietzel2008FrictionalDO,
  title={Frictional duality observed during nanoparticle sliding.},
  author={Dirk Dietzel and C. Ritter and Tristan M{\"o}nninghoff and Harald Fuchs and Andr{\'e} Schirmeisen and Udo D. Schwarz},
  journal={Physical review letters},
  year={2008},
  volume={101 12},
  pages={
          125505
        }
}
One of the most fundamental questions in tribology concerns the area dependence of friction at the nanoscale. Here, experiments are presented where the frictional resistance of nanoparticles is measured by pushing them with the tip of an atomic force microscope. We find two coexisting frictional states: While some particles show finite friction increasing linearly with the interface areas of up to 310 000 nm(2), other particles assume a state of frictionless sliding. The results further suggest… Expand
Measuring the friction of nanoparticles: a new route towards a better understanding of nanoscale friction.
  • A. Schirmeisen, U. Schwarz
  • Materials Science, Medicine
  • Chemphyschem : a European journal of chemical physics and physical chemistry
  • 2009
TLDR
This work has used the friction force microscope to measure the friction of nanoparticles sliding over flat surfaces, thereby enabling a much larger range of material combinations and interface contact areas to be studied and offering new insight into the atomistic concepts of friction. Expand
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Nanometer scale metallic islands were manipulated on a graphite surface by placing the tip of an atomic force microscope on top of the particles. Above a certain lateral force threshold particleExpand
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TLDR
Experiments demonstrated that when the normal force is above a threshold load, nanoparticles could steadily be pushed by the tip of the AFM along the defined pathway, providing new insights into the intriguing friction phenomenon on the nanoscale. Expand
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Measuring interfacial friction during the manipulation of nanoparticles is becoming an increasingly important approach in nanotribology research. In this work, antimony and gold particles depositedExpand
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TLDR
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The interlayer friction force of incommensurate graphite is a key material parameter to understand the mechanism of superlubricity and the unexpected properties of carbon-based materials; however,Expand
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