Patent ID: 6821898
Filing Date: 2004-11-23
Classification: B81B,B81C

Abstract:
A method of forming a microfluidic device on a base having an upper surface, comprising the steps of:providing a first layer having upper and lower surfaces and being in a spaced relationship to the upper surface of the base such that the lower surface of the first layer and the upper surface of the base define a first construction cavity therebetween, the first layer has passageway therethrough which communicates with the first construction cavity; positioning a mask between the first construction cavity and a source, the mask corresponding to a first channel to be formed in the first construction cavity; filling the first construction cavity with a material; polymerizing a portion of the material within the first construction cavity outside the first channel with the source such that the portion of the material is solidified; flushing the material from the first channel; providing a second layer having upper and lower surfaces and being in a spaced relationship to the first layer such that the lower surface of the second layer and the upper surface of the first layer define a second construction cavity, therebetween, the second layer having a passageway therethrough which communicates with the second construction cavity; positioning a second mask between the second construction cavity and the source, the second mask corresponding to a second channel to be formed in the second construction cavity; filling the second construction cavity with the material; polymerizing a portion of the material within the second construction cavity outside the second channel with the source such that the portion of the material is solidified; and flushing the material from the second channel in the second construction cavity, and interconnecting the second channel with the first channel.