| Issue |
Europhys. Lett.
Volume 74, Number 2, April 2006
|
|
|---|---|---|
| Page(s) | 294 - 298 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10520-5 | |
| Published online | 08 March 2006 | |
Poiseuille flow at a nanometer scale
Hitachi GST, San Jose Research Center - CA 95120, USA
Received:
29
September
2005
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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