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Nanolaminate microfluidic device for mobility selection of particles

United States Patent

7,118,661
October 10, 2006
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A microfluidic device made from nanolaminate materials that are capable of electrophoretic selection of particles on the basis of their mobility. Nanolaminate materials are generally alternating layers of two materials (one conducting, one insulating) that are made by sputter coating a flat substrate with a large number of layers. Specific subsets of the conducting layers are coupled together to form a single, extended electrode, interleaved with other similar electrodes. Thereby, the subsets of conducting layers may be dynamically charged to create time-dependent potential fields that can trap or transport charge colloidal particles. The addition of time-dependence is applicable to all geometries of nanolaminate electrophoretic and electrochemical designs from sinusoidal to nearly step-like.
Surh; Michael P. (Livermore, CA), Wilson; William D. (Pleasanton, CA), Barbee, Jr.; Troy W. (Palo Alto, CA), Lane; Stephen M. (Oakland, CA)
The Regents of the University of California (Oakland, CA)
10/ 261,392
20040060822
September 30, 2002
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.