3D printed molds for non-planar PDMS microfluidic channels
2015; Elsevier BV; Volume: 226; Linguagem: Inglês
10.1016/j.sna.2015.02.028
ISSN1873-3069
AutoresYongha Hwang, Omeed Paydar, Robert N. Candler,
Tópico(s)Microfluidic and Bio-sensing Technologies
ResumoThis article introduces the use of three-dimensionally (3D) printed molds for rapid fabrication of complex and arbitrary microchannel geometries that are unattainable through existing soft lithography techniques. The molds are printed directly from computer-aided design (CAD) files, making rapid prototyping of microfluidic devices possible in hours. The resulting 3D printed structures enable precise control of various device geometries, such as the profile of the channel cross-section and variable channel diameters in a single device. We report fabrication of complex 3D channels using these molds with polydimethylsiloxane (PDMS) polymer. Technology limits, including surface roughness, resolution, and replication fidelity are also characterized, demonstrating 100-μm features and sub-micron replication fidelity in PDMS channels.
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