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Electrokinetic properties of surfaces
Detection of viral pathogens in environmental waters
Electrokinetics in Tissue-Engineered Cartilage Scaffolds
Dielectrophoretic Particle Manipulation
Microfluidic control of neural development
Microfluidic circulating tumor cell capture
Microchip Dialysis
Protein Refolding in Microchips
Chemical Synthesis and Nonlinear Optics in Microchannels
Nanofiber processing in microfluidic devices
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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.

Publications and Presentations on Electrokinetic Pumps
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

Electrokinetic pumps fabricated in glass microchips.

 
Micro/Nanofluidics Laboratory, 282 Grumman Hall, Cornell University, Ithaca, NY 14853
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