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Electrokinetic Instabilities in Thin Microchannels

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Title

Electrokinetic Instabilities in Thin Microchannels

Author(s)

Storey, Brian D.
Tilley, Burt S.
Lin, Hao

Description

An important class of electrokinetic, microfluidic devices aims to pump and control electrolyte working liquids that have spatial gradients in conductivity. These high-gradient flows can become unstable under the application of a sufficiently strong electric field. In many of these designs, flow channels are thin in the direction orthogonal to the main flow and the conductivity gradient. Viscous stresses due to the presence of these walls introduce a stabilizing force that plays a major role in determining the overall instability. A thin channel model for fluid flow is developed and shown to provide good agreement with a complete three-dimensional model for channel aspect ratios less than or similar to 0.1.

Date Published

2018-03-26 15:08:45

Files

  • Download TilleyBS_ElectrokineticInstabilities.pdf

Rights Statements

In Copyright - Educational Use Permitted

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Electrokinetic Instabilities Thin Microchannels

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Olin College of Engineering

An undergraduate engineering institution exploring innovative approaches to engineering education since its founding in 1997.

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Needham, MA 02492
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