The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2004
Filed:
Jan. 24, 2003
Paul C. Galambos, Albuquerque, NM (US);
Murat Okandan, Albuquerque, NM (US);
Stephen Montague, Albuquerque, NM (US);
James H. Smith, Redmond, WA (US);
Phillip H. Paul, Livermore, CA (US);
Thomas W. Krygowski, Coutlandt Manor, NY (US);
James J. Allen, Albuquerque, NM (US);
Christopher A. Nichols, Hauppauge, NY (US);
Jerome F. Jakubczak, II, Rio Rancho, NM (US);
Sandia Corporation, Albuquerque, NM (US);
Abstract
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.