Issue
EPL
Volume 82, Number 3, May 2008
Article Number 36001
Number of page(s) 5
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/82/36001
Published online 21 April 2008
EPL, 82 (2008) 36001
DOI: 10.1209/0295-5075/82/36001

Slip and depletion in a Newtonian liquid

M. Wolff1, 2, B. Akgun3, 4, M. Walz5, A. Magerl5 and H. Zabel1

1  Institute for Solid State Physics/EP IV, Ruhr University Bochum - 44780 Bochum, Germany, EU
2  Institute Laue-Langevin - BP 156, 38042 Grenoble, France, EU
3  NIST Center for Neutron Research, National Institute of Standards and Technology - Gaithersburg MD 20899, USA
4  Department of Materials Science and Engineering, University of Maryland - College Park, MD 20742, USA
5  Chair for Crystallography and Structural Physics, University of Erlangen - 91058 Erlangen, Germany, EU

v-wolff@ill.eu

received 21 December 2007; accepted in final form 18 March 2008; published May 2008
published online 21 April 2008

Abstract
Despite the fact that the magnitude of surface slip, which may occur for a liquid flowing past a solid wall, was quantified by different experimental techniques, the microscopic origin of this effect remains unclear. In the present article we present a neutron reflectivity study for a Newtonian liquid, hexadecane, in contact with solid walls at rest and under shear. In this system slip is not explained by a depleted liquid layer.

PACS
61.05.fj - Neutron reflectometry.
68.08.Bc - Wetting.
81.40.Pq - Friction, lubrication, and wear.

© EPLA 2008