ANALYSIS OF AC-DRIVEN ELECTROOSMOTIC FLOW IN A MICROCHANNEL PACKED WITH MICROSPHERES

This paper presents an analysis of the alternating current (AC) electroosmotic flow in open- and closed-end cylindrical microchanneles packed with microspheres. The time-periodic electroosmotic flow in an open capillary in response to the application of an AC electric field is obtained using the Green’s function approach. The analysis is based on the capillary model. The backpressure associated with the counter-flow in a closed capillary is solved using the Brinkman’s momentum equation. The results obtained from this study can be used for the development of novel electrokinetic microactuators