Title :
Electrohydrodynamic Flow in Optoelectrostatic Micropump: Experiment Versus Numerical Simulation
Author :
Adamiak, Kazimierz ; Mizuno, Akira ; Nakano, Michihiko
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON
Abstract :
This paper deals with optoelectrostatic pumping of conductive liquids in microchannels. In this technique, the fluid is heated by laser irradiation and exposed to an external ac electric field. If the fluid permittivity and conductivity vary with temperature, the electric body force is generated, and pumping effect can be achieved. A numerical model of this phenomenon is presented, and it is based on the finite-element analysis of the electric, thermal, and flow fields. The numerical predictions are compared with the experimental data, with a reasonable qualitative agreement.
Keywords :
electrical conductivity; electrohydrodynamics; electrostatic devices; finite element analysis; microfluidics; micropumps; optoelectronic devices; permittivity; conductive liquids; electric body force; electric fields; electrohydrodynamic flow; external ac electric field; finite-element analysis; flow fields; fluid conductivity; fluid permittivity; laser irradiation heating; optoelectrostatic micropump; Electric fields; Electrohydrodynamics; Laser modes; Liquids; Microchannel; Micropumps; Numerical simulation; Permittivity; Pump lasers; Resistance heating; Computational electrostatics; electrohydrodynamics; microfluidics; micropumping;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2009.2013555
