Understanding the fluid dynamics of a particle in suspension is important for a complete investigation of many hydrodynamic phenomena, including microfluidic models. Dielectrophoresis (DEP) is a technique that can translate and trap particles through induced polarization when in the presence of non-uniform electric fields. Here, DEP has been used to capture and suspend a single 10.1 μm diameter spherical particle in a microfluidic channel. Procedures and results for controlled, oscillatory dielectrophoretic agitation of the suspended particle are shown. Hydrodynamic investigations are discussed including the incorporation of micron-resolution particle image velocimetry (μPIV).
Hydrodynamic Investigations of a Dielectrophoretically Trapped and Agitated Microparticle
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Williams, SJ, & Wereley, ST. "Hydrodynamic Investigations of a Dielectrophoretically Trapped and Agitated Microparticle." Proceedings of the ASME 2009 Fluids Engineering Division Summer Meeting. Volume 2: Fora. Vail, Colorado, USA. August 2–6, 2009. pp. 433-439. ASME. https://doi.org/10.1115/FEDSM2009-78068
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