Patent ID: 6846399
Filing Date: 2005-01-25
Classification: G01N

Abstract:
1. A process for producing a microfluidic device comprising a channel having a porous dielectric material disposed therein, wherein the porous dielectric material comprises a polymer material having an internal structure formed by a 3-dimensional network of struts, and incorporated charged sites and the generic formula wherein, A, B, and C are monovinyl, polyvinyl, and bifunctional monomers, respectively and x, y, and z are greater than or equal to zero and can be equal or unequal, and q is greater than zero, the process comprising the steps of: a) preparing a water-in-oil emulsion, comprising an oil phase and an aqueous phase wherein the oil phase contains a surfactant, a polymerization initiator, and one or more of the monomers selected from the group of monovinyl, polyvinyl or bifunctional monomers; b) casting the emulsion into the channel; c) polymerizing the monomers by optical initiation; and d) exchanging the aqueous phase.