Micro PIV analysis

Brownian motion is one of the major problem in Micro PIV. Patented SAT-PTV reduces the effect of the Brownian motion for instantaneous analysis for the time resolved Micro PIV measurements.

Generally time averaging method is used in Micro PIV to reduce the effect of the Brownian motion, SAT-PTV employs spatial averaging technique instead of time averaging technique. It enables to get instantaneous velocity information in Micro fluidics.

This is especially good much with Confocal Scanning Micro PIV where particle image is much clearer and particle density can be much higher than the conventional Micro PIV. Thus the accurate instantaneous analysis is possible and the accurate Time Resolved Micro PIV is also possible.

SAT-PTV can also evaluate the amount of Brownian motion at each PIV grid.

Comparison of the results of conventional PIV algorithm (a) and SAT-PTV (b) in micro channel

Principle of SAT-PTV velocity analysis algorithms

Red  arrow : Spatial averaged vector in the interrogation window|r : Standard deviation radius of the random displacement of each particle