title: Spatio-temporal image analysis of particle streaks in micro-channels for low-cost electro-hydrodynamic flow characterization.
abstract: Flow characterization is a primary analytical method for performance evaluation of microfluidic devices. With the increasing prevalence of microfluidic devices in recent years, there is a growing need for simple methods of automated flow estimation. In this work, a novel flow diagnostic technique based on image analysis of particle streaks is introduced, to characterize local flow velocities. While 1D velocimetry using particle tracks has occasionally been discussed for macro-scale environments, the use of particle streaks for 2-D flow characterization in micro-channels has not been explored. The proposed technique is qualitatively validated against electrokinetic experiment and numerically validated with simulated flows.
authors.affiliation: Dept of Electrical Engineering,Arizona State University, Tempe, USA. pmahanti@asu.edu
authors.forename: Prasun
authors.initials: P
authors.lastname: Mahanti
authors.forename: Tom
authors.initials: T
authors.lastname: Taylor
authors.forename: Douglas
authors.initials: D
authors.lastname: Cochran
authors.forename: Mark
authors.initials: M
authors.lastname: Hayes
authors.forename: Noah
authors.initials: N
authors.lastname: Weiss
authors.forename: Paul
authors.initials: P
authors.lastname: Jones
mesh_terms: D056656:Lab-On-A-Chip Devices; D044085:Microfluidics / Q000295:instrumentation / Q000379:methods*; D010316:Particle Size