Related Experiment Video
Updated: Aug 25, 2026

Challenges in Rheological Characterization of Highly Concentrated Suspensions — A Case Study for Screen-printing Silver Pastes
Published on: April 10, 2017
Evidence of shear-dependent boundary slip in Newtonian liquids
C Neto1, V S J Craig, D R M Williams
1Department of Applied Physics, University of Ulm, Albert Einstein Allee 11, 89069 Ulm, Germany. chiara@csgi.unifi.it
Abstract:
The flow of Newtonian fluids was studied by directly measuring the hydrodynamic drainage force acting on a sphere approaching a flat surface. Our force measurements provide clear evidence of boundary slip and show that the degree of boundary slip is a function of the liquid viscosity and the shear rate. A shear-dependent boundary slippage was also observed in experiments with a polymer (PDMS). The liquids wetted the bounding surfaces either partially or completely. Our results have important consequences for the design of microfluidic devices, and in technological processes, such as lubrication and permeability of microporous media.
More Related Videos
Related Concept Videos
Newtonian Fluid: Problem Solving
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
Types of Fluids
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and their...
Viscosity
The SI unit of viscosity is...
Viscosity
Navier–Stokes Equations
Viscosity of Fluid

