Skip to main content


Title: 3D Micro Particle Image Velocimetry


: IGERT trainee Orin Hemminger’s recent research activity has centered on using DNA as a model polymer to visualize molecular behavior during interesting flow phenomena. Non-Newtonian polymer solutions exhibit unique flow behaviors due to chain interactions. Direct visualization of these interactions will give insight to the microscopic behavior that leads to unexpected macroscopic flow and provide the foundation for the development of accurate simulations. Using fluorescently stained DNA to model polymer solutions enables direct visualization of the individual chains.

Address Goals

The high-speed confocal microscope has been used to obtain 3D velocity profiles for flows in microchannels, track bubble formation in microchannels to compare to Lattice-Boltzmann simulations, and generated the first visual evidence of chain conformations in entangled polymer flows.