Volume 74, Number 2, April 2006
|Page(s)||294 - 298|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||08 March 2006|
Poiseuille flow at a nanometer scale
Hitachi GST, San Jose Research Center - CA 95120, USA
Accepted: 14 February 2006
The spreading behavior of non-polar polymers in the nanometer thickness range is revisited. By incorporating a distance of closest approach d0 corresponding to the unbonded atom-atom distance, to the classical London slab-slab interaction energy, we demonstrate that the spreading profiles of a non-polar perfluoropolyether molecule perfectly obeys a Poiseuille flow driven by a disjoining pressure gradient. The dynamics of the thin film is entirely defined by d0, the polymer bulk viscosity, and the composite Hamaker constant of the polymer/surface system.
PACS: 68.08.-p – Liquid-solid interfaces / 68.08.Bc – Wetting
© EDP Sciences, 2006
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