Recommended Results

Rheo-Particle Tracking Velocimetry (1:30-2:15PM Pacific US Time)


Many complex fluids, when subjected to shear, exhibit non-homogeneous flow and resulting instabilities involving large spatial dependence of shear rate. Examples include yielding in colloidal suspensions, shear banding in polymer and surfactant solutions, etc….

Rheo-particle tracking velocimetry (rheo-PTV), which combines traditional rheological measurements with direct flow visualization, has become a powerful tool for characterizing and understanding the origin of non-homogeneous flows. This novel technique provides critical information on the correlation between the bulk rheology and the evolution of flow field, and has been applied to characterize a broad range of complex fluids.

The webinar will focus on the details of rheo-PTV instrumentation and data acquisition, as well as data processing and interpretation.  The use of rheo-PTV to study transient and steady-state shear banding in wormlike micelle surfactant solutions will be presented as an illustrative example.

This webinar will be conducted from 1:30-2:15PM Pacific US Time.

Date: 2016-11-07
Language: English
Trainer: Mr. Peng Cheng

Mr. Peng Cheng is a Ph.D. candidate in chemical engineering from University of California, Santa Barbara. His research focuses on studying nonlinear viscoelastic instabilities of wormlike micelle surfactant solutions using a combination of rheological, kinematic, and microstructural characterizations.  He received a Bachelor’s degree in chemical engineering from Texas A&M University.

Contact person and registration:
Hayley Gilbert
Tel.: +1 - 804 - 550 - 1051[at]