Method for determining the speed of particles dispersed in a flowing solution

摘要

The method involves generating an evanescent wave propagated in direct surrounding of a solid wall, and detecting a temporal autocorrelation function of scattered intensity. The autocorrelation function is adjusted with a theoretical temporal model correlation function for determining relaxation rates. The rates are applied against particle penetration depth by determining space resolved shear rate. Particle speed is determined based on the temporal autocorrelation function of the scattered intensity of the evanescent wave.