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:
Aug. 03, 2004
Filed:
Jul. 26, 2001
Applicant:
Inventors:
Kenneth R. Hencken, Pleasanton, CA (US);
George B. Sartor, Tracy, CA (US);
Assignee:
Sandia National Laboratories, Livermore, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/7447 ; F04F 1/100 ;
U.S. Cl.
CPC ...
G01N 2/7447 ; F04F 1/100 ;
Abstract
An electrokinetic pump in which the porous dielectric medium of conventional electrokinetic pumps is replaced by a patterned microstructure. The patterned microstructure is fabricated by lithographic patterning and etching of a substrate and is formed by features arranged so as to create an array of microchannels. The microchannels have dimensions on the order of the pore spacing in a conventional porous dielectric medium. Embedded unitary electrodes are vapor deposited on either end of the channel structure to provide the electric field necessary for electroosmotic flow.