Patent ID: 8662860
Filing Date: 2014-03-04
Classification: B01F,B01J,B01L,F04B

Abstract:
1. A microfluidic driving system, comprising: a first planar electrode, comprising: a second planar electrode disposed parallel to the first planar electrode and face-to-face with the first planar electrode to form an accommodation space, the accommodation space being provided for accommodating a fluid, the second planar electrode comprising: a power supply unit having a first output terminal and a second output terminal respectively connected to the first conductive layer and the second conductive layer for providing an alternating current (AC) power, a non-uniform AC electric field being generated by the AC power via the asymmetric shape between the first planar electrode and the second planar electrode, and the AC electric field being provided for driving the fluid to flow via an AC electro osmotic flow, wherein the AC electric field produces a plurality of three-dimensional vortexes according to the shapes of the first conductive layer and the second conductive layer, and the plurality of three-dimensional vortexes are interacted with each other to form an extensional flow field; a third planar electrode having a third conductive layer and being coplanar with the second planar electrode, and the third planar electrode being disposed on one side of the second planar electrode and providing for moving and absorbing a first fluid of the fluid; and a fourth planar electrode having a fourth conductive layer and being coplanar with the second planar electrode, and the fourth planar electrode being disposed correspondingly to the third planar electrode and providing for moving and absorbing a second fluid of the fluid; wherein the power supply unit further comprises a third output terminal and a fourth output terminal respectively connected to the third conductive layer and the fourth conductive layer for providing the AC power; and the first planar electrode, the third planar electrode, and the fourth planar electrode are electrified alternatively to produce the AC electric field in order to move the first fluid and the second fluid; and then the second planar electrode is electrified in order to mix the first fluid and the second fluid.