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26 April 2024 |
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Nanorheology : an Investigation of the Boundary Condition at Hydrophobic and Hydrophilic Interfaces | | C. Cottin-Bizonne
; S. Jurine
; J. Baudry
; J. Crassous
; F. Restagno
; Charlaix
; | | Date: |
8 Oct 2002 | | Subject: | Soft Condensed Matter; Statistical Mechanics | cond-mat.soft cond-mat.stat-mech | | Abstract: | t has been shown that the flow of a simple liquid over a solid surface can violate the so-called no-slip boundary condition. We investigate the flow of polar liquids, water and glycerol, on a hydrophilic Pyrex surface and a hydrophobic surface made of a Self-Assembled Monolayer of OTS (octadecyltrichlorosilane) on Pyrex. We use a Dynamic Surface Force Apparatus (DSFA) which allows one to study the flow of a liquid film confined between two surfaces with a nanometer resolution. No-slip boundary conditions are found for both fluids on hydrophilic surfaces only. Significant slip is found on the hydrophobic surfaces, with a typical length of one hundred nanometers. | | Source: | arXiv, cond-mat/0210154 | | Services: | Forum | Review | PDF | Favorites | |
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