Pumping of dielectric liquids using non-uniform-field induced electrohydrodynamic flow | Zendy

Wonkyoung Kim | Zendy; Jae Chun Ryu | Zendy; Yong Kweon Suh | Zendy; Kwan Hyoung Kang | Zendy

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Pumping of dielectric liquids using non-uniform-field induced electrohydrodynamic flow

Author(s) -

Wonkyoung Kim,

Jae Chun Ryu,

Yong Kweon Suh,

Kwan Hyoung Kang

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3665403

Subject(s) - electrohydrodynamics , electric field , conductivity , materials science , mechanics , dielectric , liquid dielectric , voltage , flow (mathematics) , polar , electrical resistivity and conductivity , field (mathematics) , electrode , condensed matter physics , chemistry , physics , optoelectronics , pure mathematics , mathematics , quantum mechanics , astronomy

We present a method of pumping dielectric (or non-polar) liquids. The pumping method relies on the electrohydrodynamic flow generated by field dependent electrical conductivity (Onsager effect). Adding a small amount of polar liquid increases the field-dependency of conductivity. Applying either dc or ac voltage produces a fast and regular flow around electrodes. Flow speed is proportional to cube of electric-field strength and inversely to applied frequency. The experimental results agreed well with numerical analysis based on our theoretical model.

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