Finite-Element Simulation of Electroosmotic Mixing: A Study of the Simultaneous Effects of Working Parameters for Optimization

Micromixers are crucial parts of microfluidic systems when it comes to efficiency and precision, as mixing is the central process in most relevant applications, including medical diagnosis, chemical production, drug discovery. In view importance improving quality, for first time, present work investigates simultaneous effects chamber geometry (circular, hexagonal, octagonal), electric field frequency (5, 7, 10, 15 Hz), inlet velocity (0.1-0.2 mm·s−1), phase difference (0-π) on flow inside an electroosmotic micromixer using finite-element tool COMSOL Multiphysics 5.4 optimize achieve homogeneous mixing. The flow-field, concentration-field, electric-field equations were coupled solved simultaneously. results this research indicated that at a given specific range, increases, more occurs smaller chamber, higher frequency. Moreover, highest level (98.16%) was obtained with 0.1 mm·s−1 velocity, 10 Hz frequency, π/2 hexagonal chamber.