Title :
Experimental Investigation on Electroosmotic Transport in Cross-straight Channel
Author :
Chen, Hong ; Fu, Xin ; Xie, Hai-bo
Author_Institution :
State Key Lab of Fluid Power Transmission & Control, Zhejiang Univ., Hangzhou
Abstract :
In this paper steady electro-osmotic flow (EOF) in cross-straight channel is measured by micro particle image velocimetry (micro-PIV). Micro channels with two elementary configurations, a straight channel and a cross-straight channel, are fabricated by wet chemical etching process on glass. The uniform Zeta potential is obtained form the ratio of averaged velocities of EOF in the straight channel under each external applied electric field, which is used in numerical simulation. The experiment shows that the flow patterns in cross-straight channel are controlled by different patterns of applied electric field, which directly make controllable the flux ratio of separated fluids
Keywords :
electric field effects; electrophoresis; microchannel flow; osmosis; controllable separated fluid flux ratio; cross-straight channel steady EOF; cross-straight microchannel; electro-osmotic Flow; external applied electric field; flow patterns; micro-PIV; microparticle image velocimetry; straight microchannel; uniform Zeta potential; wet chemical etching process; Chemicals; Fluid flow control; Glass; Microfluidics; Numerical simulation; Particle measurements; Power engineering and energy; Reservoirs; Temperature; Wet etching; electro-osmotic flow; micro-PIV;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on
Conference_Location :
Zhuhai
Print_ISBN :
1-4244-0139-9
Electronic_ISBN :
1-4244-0140-2
DOI :
10.1109/NEMS.2006.334835
