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Surface-micromachined microfluidic devices

United States Patent

March 25, 2003
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators.
Galambos; Paul C. (Albuquerque, NM), Okandan; Murat (Albuquerque, NM), Montague; Stephen (Albuquerque, NM), Smith; James H. (Redmond, WA), Paul; Phillip H. (Livermore, CA), Krygowski; Thomas W. (Cortlandt Manor, NY), Allen; James J. (Albuquerque, NM), Nichols; Christopher A. (Hauppauge, NY), Jakubczak, II; Jerome F. (Rio Rancho, NM)
Sandia Corporation (Albuquerque, NM)
09/ 712,634
November 13, 2000
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.