Electrohydromechanical analysis based on conductivity gradient in microchannel |
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Authors: | Jiang Hong-Yuan Ren Yu-Kun Ao Hong-Rui and Antonio Ramos |
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Institution: | Department Electronica y Electromagnetismo, Universidad
de Sevilla, Avda Reina Mercedes s/n, Sevilla 41012, Spain; School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China |
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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. |
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Keywords: | electrohydrodynamics conductivity gradient theoretical analysis numerical simulation |
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