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Electrokinetic Pumps
Funding: DOE
Electrokinetic micropumps (EK pumps) use electroosmosis in charged porous media to generate pressure and flow in microdevices. EK pumps are realized by applying voltage across a porous bed, typically a monolithic porous polymer or a bed of packed silica particles.

Electrokinetic pumps have no moving parts, excellent frequency response, and the ability to precisely meter flow at high-pressure and low flow rates. These attributes make them ideally suited for control of flow in miniaturized high-performance liquid chromatography systems as well as miniaturized catalytic reactors.

Our work on electrokinetic pumps has focused on use of high-dielectric-constant fluids to demonstrate the highest reported efficiencies (over 5%) and pressures (1.5 atmospheres per volt) to date.

Archival Publications
PDF version of Reichmuth, Kirby: Effects of ammonioalkyl sulfonate internal salts on electrokinetic micropump performance and reversed-phase HPLC separations

Reichmuth DS, Kirby BJ
"Effects of Ammonioalkyl sulfonate internal salts on electrokinetic micropump performance and Reversed-Phase HPLC separations," Journal of Chromatography A, 1013:93-101 (2003). doi pdf text

PDF version of Reichmuth, Chirica, Kirby: Increasing the performance of high-pressure, high-efficiency electrokinetic micropumps using zwitterionic solute additives

Reichmuth DS, Chirica GS, Kirby BJ
"Increasing the Performance of High-Pressure, High-Efficiency Electrokinetic Micropumps Using Zwitterionic Solute Additives," Sensors and Actuators B-Chemical, 92:37-43 (2003). doi pdf text

PDF versino of Fintschenko, Kirby, Hasselbrink, Singh, Shepodd: Monolithic materials: miniature and microchip technologies

Fintschenko Y, Kirby BJ, Hasselbrink, Jr. EF, Singh AK, Shepodd TJ
"Monolithic Materials: Miniature and Microchip Technologies," in Monolithic Materials: Preparation, Properties, and Applications Elsevier, Amsterdam (2003). pdf

Presentations and Other Publications
6 Oct 2006

Kirby BJ
"Fabrication for design and control of micro/nanofluidic systems", University of Michigan Mechanical Engineering Seminar Series, Ann Arbor, MI.

21 Jun 2006

Kirby BJ
"Electrokinetics in fluid systems: Control of fields with multiscale geometric patterning", 2nd New York Complex Matter Workshop, Ithaca, NY.

12 Jan 2006

Kirby BJ
"Miniaturized devices for combinatorial chemistry and nanofluidic study", Sandia National Laboratories, Livermore, CA.

9 Dec 2005

Kirby BJ
Kodak Research Laboratories, Rochester, NY.

10 Nov 2005

Kirby BJ
Mechanical Engineering and Applied Mechanics Department, University of Pennsylvania, Philadelphia, PA.

27 Oct 2005

Kirby BJ
Dept. of Micro- and Nanotechnology, Technical University of Denmark, Lyngby, Denmark.

18 Oct 2005

Kirby BJ
Nanobiotechnology Center, Cornell University, Ithaca, NY.

27 Sep 2005

Kirby BJ
Cornell Fluid Dynamics Seminar, Ithaca, NY.

25 July 2005

Kirby BJ
Gordon Research Conference on the Physics and Chemistry of Microfluidics, Oxford, UK.

10 Feb 2005

Kirby BJ
APS March Annual Meeting, San Francisco, CA.

10 Feb 2005

Kirby BJ
Johns Hopkins Mechanical Engineering Seminar Series, Baltimore, MD.

Professor Kirby's text is available at Cambridge or Amazon or Powell's or Barnes and Noble, among other vendors.