Patent ID: 7939033
Filing Date: 2011-05-10
Classification: B01F,B01J,B01L

Abstract:
1. A microfluidic device comprising at least one reactant passage and one or more thermal control passages defined therein, the one or more thermal control passages being positioned and arranged within two volumes each bordered by a wall, the walls being generally planar and parallel to one another, the reactant passage positioned between said generally planar walls and defined by said generally planar walls and walls extending between said generally planar walls, wherein the reactant passage comprises multiple successive chambers, each such chamber including a split of the reactant passage into at least two sub-passages, and a joining of the split passages, and a change of passage direction, of at least one of the sub-passages, of at least 90 degrees, wherein each of the multiple successive chambers being immediately succeeded by another one of said chambers further comprises a gradually narrowing exit which forms a corresponding narrowed entrance of the succeeding chamber, and a splitting and re-directing wall oriented crossways to the immediately upstream passage and positioned immediately downstream of the chamber's entrance, the upstream side of said splitting and re-directing wall having a concave surface.