The role of lubricant molecular shape in microscopic friction
Soft Condensed Matter
2012-10-26 v1 Materials Science
Abstract
With the help of a simple two-dimensional model we simulate the tribological properties of a thin lubricant film consisting of linear (chain) molecules in the ordinary soft-lubricant regime. We find that friction generally increases with chain length, in agreement with their larger bulk viscosity. When comparing the tribological properties of molecules which stick bodily to the substrates with others carrying a single sticking termination, we find that the latter generally yield a larger friction than the former.
Cite
@article{arxiv.0810.1837,
title = {The role of lubricant molecular shape in microscopic friction},
author = {Oleg M. Braun and Nicola Manini and Erio Tosatti},
journal= {arXiv preprint arXiv:0810.1837},
year = {2012}
}
Comments
11 pages, 15 figures, in print in Phys. Rev. B