Electrokinetic pump

Details Electrokinetic pump Electrokinetic pump

2007-11-20

2007-11-20

Olsen, Kaj K. (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrophoretic or electro-osmotic apparatus

C417S048000, C422S105000

Reexamination Certificate

active

10830773

ABSTRACT:
A method for altering the surface properties of a particle bed. In application, the method pertains particularly to an electrokinetic pump configuration where nanoparticles are bonded to the surface of the stationary phase to alter the surface properties of the stationary phase including the surface area and/or the zeta potential and thus improve the efficiency and operating range of these pumps. By functionalizing the nanoparticles to change the zeta potential the electrokinetic pump is rendered capable of operating with working fluids having pH values that can range from 2-10 generally and acidic working fluids in particular. For applications in which the pump is intended to handle highly acidic solutions latex nanoparticles that are quaternary amine functionalized can be used.

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Reyes, D., et al., Micro Total Ananlysis Systems 1. Introduction, Theory and Technology, Anal. Chem., 2002, 2623-2636, 74.

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