Development of an electroosmotic pump for high performance actuation

Prakhar Prakash, Michael D. Grissom, Christopher D. Rahn, Andrew L. Zydney

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Electroosmotic pumps have been used in a variety of applications, typically for systems that require very low flow rates and/or pressures. The objective of this work was to develop an electroosmotic pump capable of driving a high mechanical advantage actuator that could generate large block stresses and large strains, requiring actuation pressures in excess of 0.1 MPa with flow rates on the order of 0.1 mL/s. Experiments were performed using inorganic silica and alumina membranes with different pore size. Data were obtained over a range of solution ionic strength, with results compared to model calculations developed from numerical solution of the Navier-Stokes and Poisson-Boltzmann equations. These results were used to construct a multi-stage electroosmotic pump capable of providing the desired flow rates and pressures. This multi-stage pump design was sufficiently flexible to allow adaptation to a variety of applications.

Original languageEnglish (US)
Pages (from-to)153-160
Number of pages8
JournalJournal of Membrane Science
Issue number1-2
StatePublished - Dec 15 2006

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation


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