Open AccessElecrohydrodynamical characteristics of liquid film motor driven by a square-wave electrophoresis electric field
Author(s) -
Zhongqiang Liu,
Kong-Yin Gan,
Yingjun Li,
Surong Jiang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.134703
Subject(s) - electric field , square wave , reciprocating motion , rotation (mathematics) , electrophoresis , field (mathematics) , vibration , square (algebra) , materials science , alternating current , mechanics , physics , acoustics , computer science , voltage , chemistry , thermodynamics , geometry , mathematics , chromatography , quantum mechanics , pure mathematics , artificial intelligence , gas compressor
Liquid film motor as a novel experimental device will play an important role in basic research and technology applications. In-depth theoretical studies on its electro-hydrodynamics (EHD) motions under various conditions are of great significance. In current paper, the dynamical characteristics of the liquid film motor driven by a square-wave electrophoresis electric field perpendicular to a uniform constant external electric field are investigated. Space-time dependence of the film's rotation linear velocity is derived analytically. The theoretical results indicate that a symmetrical reciprocating rotation in the film gradually converts to a vibration as the frequency of the electrophoresis electric field increases. This not only helps us understand the physical origin of the vibration of the liquid film motor, but also provides a new option to design a liquid film mixer in the application.