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Chin. Phys. B, 2008, Vol. 17(12): 4541-4546    DOI: 10.1088/1674-1056/17/12/035
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Electrohydromechanical analysis based on conductivity gradient in microchannel

Jiang Hong-Yuan(姜洪源)aRen Yu-Kun(任玉坤)a, Ao Hong-Rui (敖宏瑞)a, Antonio Ramosb
a School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Department Electronica y Electromagnetismo, Universidad de Sevilla, Avda Reina Mercedes s/n, Sevilla 41012, Spain
Abstract  Fluid manipulation is very important in lab-on-a-chip system. This paper analyzes phenomena which use the alternating current (AC) electric field to deflect and manipulate coflowing streams of two different electrolytes (with conductivity gradient) within a microfluidic channel. The basic theory of the electrohydrodynamics and simulation of the analytical model are used to explain the phenomena. The velocity induced for different voltages and conductivity gradient are computed. The results show that when the AC electrical signal is applied on the electrodes, the fluid with higher conductivity occupies a larger region of the channel and the interface of the two fluids is deflexed. It will provide some basic references for the people who want to do more study in the control of diffrent fluids with conductivity gradient in microfluidic channel.
Keywords:  electrohydrodynamics      conductivity gradient      theoretical analysis      numerical simulation  
Received:  03 March 2008      Revised:  04 April 2008      Accepted manuscript online: 
PACS:  47.65.-d (Magnetohydrodynamics and electrohydrodynamics)  
  47.10.ad (Navier-Stokes equations)  
  47.85.Np (Fluidics)  
  82.45.Fk (Electrodes)  
  82.45.Gj (Electrolytes)  
  85.85.+j (Micro- and nano-electromechanical systems (MEMS/NEMS) and devices)  
Fund: Project supported by the 111 Project (Grant No B07018).

Cite this article: 

Jiang Hong-Yuan(姜洪源), Ren Yu-Kun(任玉坤), Ao Hong-Rui (敖宏瑞), Antonio Ramos Electrohydromechanical analysis based on conductivity gradient in microchannel 2008 Chin. Phys. B 17 4541

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