One-Step Fabrication of Microchannels with Integrated Three Dimensional Features by Hot Intrusion Embossing.

ABSTRACT: We build on the concept of hot intrusion embossing to develop a one-step fabrication method for thermoplastic microfluidic channels containing integrated three-dimensional features. This was accomplished with simple, rapid-to-fabricate imprint templates containing microcavities that locally control the intrusion of heated thermoplastic based on their cross-sectional geometries. The use of circular, rectangular and triangular cavity geometries was demonstrated for the purposes of forming posts, multi-focal length microlense arrays, walls, steps, tapered features and three-dimensional serpentine microchannels. Process variables, such as temperature and pressure, controlled feature dimensions without affecting the overall microchannel geometry. The approach was demonstrated for polycarbonate,

SUBMITTER: Debono M 

PROVIDER: S-EPMC5191004 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature