Variable control of electroosmotic and/or electrophoretic forces

Details Variable control of electroosmotic and/or electrophoretic forces Variable control of electroosmotic and/or electrophoretic forces

1996-07-03

1998-09-01

Gorgos, Kathryn L.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204454, 204602, 204601, G01N 2726

Patent

active

058006907

ABSTRACT:
In a microfluidic system using electrokinetic forces, the present invention uses electrical current or electrical parameters, other than voltage, to control the movement of fluids through the channels of the system. Time-multiplexed power supplies also provide further control over fluid movement by varying the voltage on an electrode connected to a fluid reservoir of the microfluidic system, by varying the duty cycle during which the voltage is applied to the electrode, or by a combination of both. A time-multiplexed power supply can also be connected to more than one electrode for a savings in cost.

REFERENCES:
patent: 3712859 (1973-01-01), Dilworth, III
patent: 4908112 (1990-03-01), Pace
patent: 5126022 (1992-06-01), Soane et al.
patent: 5194133 (1993-03-01), Clark et al.
patent: 5286356 (1994-02-01), Jones et al.
patent: 5585069 (1996-12-01), Zanzucchi et al.
patent: 5593838 (1997-01-01), Zanzucchi et al.
patent: 5599432 (1997-02-01), Manz et al.
patent: 5605662 (1997-02-01), Heller et al.
European Search Report from European Appln. No. 97 304873.9.
Effenhauser et al., "Glass Chips for High-Speed Capillary Electrophoresis Separations with Submicrometer Plate Heights", Anal. Chem., 1993, 65, 2637-2642. Month Unavailable.
Effenhauser et al., "High-Speed Separation of Antisense Oligo-nucleotides on a Micromachined Capillary Electrophoresis Device", Anal. Chem., 1994, 66, 2949-2953. Month Unavailable.
Harrison, et al., "Capillary Electrophoresis and Sample Injection Systems Integrated on a Planar Glass Chip", Anal. Chem., 1992, 64, 1926-1932. Month Unavailable.
Manz, et al., "Miniaturized Total Chemical Analysis Systems: a Novel Concept for Chemical Sensing", Sensors & Actuators, 1990, B1, 244-248. Month Unavailable.
Woolley, et al., "Ultra-high-speed DNA fragment separations using microfabricated capillary array electrophoresis chips", Proc. Natl. Aca. Sci., 1994, 91, 11348-1135. Month Unavailable.
Dasgupta, Purnendu K. et al., "Electroosmosis: A Reliable Fluid Propulsion Ssytem for Flow Injection Analysis", Anal. Chem., 1994, 66, 1792-1798. Month Unavailable.
Linhares, Michael C. et al., "Use of an On-Column Fracture in Capillary Zone Electrophoresis for Sample Introduction", Anal. Chem., 1991, 63, 2076-2078. Month Unavailable.

Affiliated with

Also associated with

Rating

Variable control of electroosmotic and/or electrophoretic forces does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable control of electroosmotic and/or electrophoretic forces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable control of electroosmotic and/or electrophoretic forces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-266396