Skip to Content
Find More Like This
Return to Search

Method and apparatus for controlling cross contamination of microfluid channels

United States Patent

February 7, 2006
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Microfluidic Devices
A method for controlling fluid flow at junctions in microchannel systems. Control of fluid flow is accomplished generally by providing increased resistance to electric-field and pressure-driven flow in the form of regions of reduced effective cross-sectional area within the microchannels and proximate a channel junction. By controlling these flows in the region of a microchannel junction it is possible to eliminate sample dispersion and cross contamination and inject well-defined volumes of fluid from one channel to another.
Hasselbrink, Jr.; Ernest F. (Walnut Creek, CA), Rehm; Jason E. (Alameda, CA), Paul; Phillip H. (Livermore, CA), Arnold; Don W. (Livermore, CA)
Sandia National Laboratories (Livermore, CA)
09/ 669,862
September 26, 2000
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.