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

1997-07-03

1999-10-12

Beisner, William H.

Chemistry: electrical and wave energy

Apparatus

Electrophoretic or electro-osmotic apparatus

204601, 323282, G01N 2726

Patent

active

059650010

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.

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