Patent ID: 8082810
Filing Date: 2011-12-27
Classification: B01L,G01N

Abstract:
1. A microfluidic device comprising at least one micro-aliquotter, the micro-aliquotter comprising: a rigid, dimensionally stable foundational layer having a fluid port therein, the fluid port being in fluid communication with a channel within the microfluidic device; an elastic film positioned on the foundational layer in a rest position with the elastic film lying on the foundational layer such that there is substantially little to substantially no space between the film and the foundational layer, wherein the elastic film covers the fluid port, the elastic film being sealed to the foundational layer at a distance removed from the fluid port so a fluid entering through the fluid port can be captured between the elastic film and the foundational layer; the elastic film being expandable from the rest position on the foundational layer to a dispensing position in which an aliquot volume of a fluid is contained between the film and the foundational layer; and a substrate layer supporting the foundational layer; wherein in the dispensing position the aliquot volume contained between the film and the foundational layer is about 5 μL up to about 100 μL.