Patent ID: 6523559
Filing Date: 2003-02-25
Classification: G05D,Y10T

Abstract:
A microfluidic device for modifying the value of a property of a fluid, comprising:a body defining: a first flow channel having an input end for receiving the fluid and an output end; a second flow channel having an input end for receiving a compensating fluid to modify the value of the property of the fluid and an output end communicating with the first flow channel; a polymeric material positioned in the first flow channel downstream of the output end of the second flow channel and having a volume responsive to the value of the property of the fluid, the material having a first volume in response to the property having a first value and a second volume in response to the property having a second value; and a valve disposed in the second flow channel and being movable in response to the volume of the material between a first open position allowing the compensating fluid to flow therepast into the first flow channel and a closed position limiting the flow of the compensating fluid therepast.