Evidence of the No-slip boundary condition of water flow between hydrophilic surfaces using atomic force microscopy
WANG, Yuliang
Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics
Mechanical Engineering
Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics
Mechanical Engineering
WANG, Yuliang
Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics
Mechanical Engineering
< Reduce
Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics
Mechanical Engineering
Language
en
Article de revue
This item was published in
Langmuir. 2009-09-15, vol. 25, n° 20, p. 12002-12005
American Chemical Society
English Abstract
In this study we present measurements of the hydrodynamic force exerted on a glass sphere glued to an atomic force microscopy (AFM) cantilever approaching a mica surface in water. A large sphere was used to reduce the ...Read more >
In this study we present measurements of the hydrodynamic force exerted on a glass sphere glued to an atomic force microscopy (AFM) cantilever approaching a mica surface in water. A large sphere was used to reduce the impact of the cantilever beam on the measurement. An AFM cantilever with large stiffness was used to accurately determine the actual contact position between the sphere and the sample surface. The measured hydrodynamic force with different approach velocities is in good agreement with the Taylor force calculated in the lubrication theory with the no-slip boundary conditions, which verifies that there is no boundary slip on the glass and mica surfaces. Moreover, a detailed procedure of how to subtract the electrostatic double-layer force is presented.Read less <
Origin
Hal imported