An Active Micro Mixer Using Electrohydrodynamic (EHD) Convection

J.-W. Choi, C. H
2000 2000 Solid-State, Actuators, and Microsystems Workshop Technical Digest   unpublished
This paper presents a new active micro mixer using electrohydrodynamic (EHD) convection for the application of microfluidic-based biochemical analysis systems and biochips. To understand the EHD convection mixing, analytical analyses on the micro mixer have been performed for two different liquid samples with different electric conductivities. Using the analytical results, a new active micro mixer has been designed, fabricated, and also characterized by flowing two liquid samples through the
more » ... ples through the microchannel. DI water and saltine water solution, which have less than the volume of IO pl, have been fully mixed in the mixing zone at 5 -20 V of the applied voltage. Since the realized micro mixer has simple structure and no mechanical moving parts, it shows very reliable mixing performance. The active micro mixing device studied in this work also shows feasible mixing capabilities in nano-or pico-liter range of liquid volumes by applying a low voltage of 5 V across the microchannel.
doi:10.31438/trf.hh2000.13 fatcat:mmrjx6aurjgujmxymtovlwmqpm