A microfluidic electroosmotic mixer and the effect of potential and frequency on its mixing efficiency

Author

Kouzani, A.Z. ; Khoshmanesh, K. ; Nahavandi, S. ; Kanwar, J.R.

Author_Institution

Sch. of Eng., Deakin Univ., Geelong, VIC, Australia

fYear

2009

fDate

11-14 Oct. 2009

Firstpage

4618

Lastpage

4622

Abstract

This paper presents the design and numerical simulation of a T-shape microfluidic electroosmotic micromixer. It is equipped with six microelectrodes that are embedded in the side surfaces of the microchannel. The electrode array consists of two sets of three 20 Â¿m and 60 Â¿m microelectrodes arranged in the form of two opposing triangles. Numerical analysis of electric potential and frequency effects on mixing efficiency of the micromixer is carried out by means of two sets of simulations. First, the electric potential is kept at 2 V while the frequency is varied within 10-50 Hz. The highest achieved mixing efficiency is 96% at 22 Hz. Next, the frequency is kept at 30 Hz whilst the electric potential is varied within 1-5 V. The best achieved mixing efficiency is 97% at 3 V.

Keywords

microchannel flow; mixers (circuits); numerical analysis; electric potential; electrode array; electroosmotic mixer; frequency 10 Hz to 50 Hz; frequency 22 Hz; frequency 30 Hz; frequency effects; microchannel; mixing efficiency; numerical analysis; side surfaces; voltage 1 V to 5 V; voltage 2 V; voltage 3 V; Australia; Electric potential; Electrodes; Electrokinetics; Equations; Frequency; Microchannel; Microelectrodes; Microfluidics; Numerical simulation; electroosmotic flow; microfluidics; micromixer; mixing efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on

Conference_Location

San Antonio, TX

ISSN

1062-922X

Print_ISBN

978-1-4244-2793-2

Electronic_ISBN

1062-922X

Type

conf

DOI

10.1109/ICSMC.2009.5346762

Filename

5346762