MIAYKE Koji's Homepage

AIST
Research Topics

Frictional Properties of Physisorbed Molecules

Characteristics
  • Planer molecules, such as porphyrin and phthalocyanine derivatives, as a model of luburicants
  • Frictional properties of phthalocyanine derivatives analyzed from nano to macro scale.
Frictional property in nano scale
  • Intermolecular interaction attributed to surface adsorbed molecular arrangement affected frictional property in nano scale.
  • "shear" region and "wear" region were observed depending on the normal load.


nano-scale friction
Frictional property in macro scale
  • Frictional property was not affected by molecular structure.
  • Friction force is proportional to normal load. (COF is less than 0.1)
macro-scale friction

References

  1. "Nanoscale to Macroscale Investigation of the Frictional Properties of Physisorbed Layers of Self-Organized Phthalocyanine Derivatives"
    K. Miyake, M. Nakano, A. Korenaga, Y. Hori, T. Ikeda, M. Asakawa, T. Shimizu, S. Sasaki, and Y. Ando
    Tribology Letters 31(1), 9-15 (2008).

  2. "Alkyl-Chain Length Dependence of Frictional Properties of Alkyl-Substituted Phthalocyanines Physisorbed on Graphite Surface"
    K. Miyake, Y. Hori, T. Ikeda, M. Asakawa, T. Shimizu, T. Ishida, and S. Sasaki
    Japanese Journal of Applied Physics 44(7B), 5403-5408 (2005).