FLOW PATTERN CONTROL IN MICROCHANNELS BY MEANS OF WALL SURFACE PATTERNING

Flow pattern control in EOF-driven microchannels has been investigated. Part of the SiO2 channel wall has been replaced with other oxide to create flow pattern change. Experiment has shown the feasibility of flow control concept. Numerical calculation has been performed in order to examine the parameters.

[1]  R.-J. Yang,et al.  Electroosmotic Flow in Microchannels. , 2001, Journal of colloid and interface science.

[2]  Harold Gamble,et al.  Flow-rate measurement via conductivity monitoring in microfluidic devices , 2000, SPIE MOEMS-MEMS.

[3]  Z. Yang,et al.  Ultrasonic micromixer for microfluidic systems , 2000, Proceedings IEEE Thirteenth Annual International Conference on Micro Electro Mechanical Systems (Cat. No.00CH36308).

[4]  E. Bender.  Numerical heat transfer and fluid flow. Von S. V. Patankar. Hemisphere Publishing Corporation, Washington – New York – London. McGraw Hill Book Company, New York 1980. 1. Aufl., 197 S., 76 Abb., geb., DM 71,90 , 1981 .

[5]  M. Kosmulski.  Oxide/electrolyte interface : electric double layer in mixed solvent systems , 1995 .

[6]  P. Tabeling,et al.  Chaotic mixing in electrokinetically and pressure driven micro flows , 2001, Technical Digest. MEMS 2001. 14th IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.01CH37090).

[7]  O. Guenat,et al.  Partial electroosmotic pumping in complex capillary systems: Part 2: Fabrication and application of a micro total analysis system (μTAS) suited for continuous volumetric nanotitrations , 2001 .

[8]  George A. Parks,et al.  The Isoelectric Points of Solid Oxides, Solid Hydroxides, and Aqueous Hydroxo Complex Systems , 1965 .

[9]  Robin H. Liu,et al.  Passive mixing in a three-dimensional serpentine microchannel , 2000, Journal of Microelectromechanical Systems.

[10]  M. Kosmulski.  Attempt to determine pristine points of zero charge of Nb2O5, Ta2O5, and HfO2 , 1997 .