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3D printed metal molds for hot embossing plastic microfluidic devices
Tung-Yi Lin1, Truong Do1, Patrick Kwon1
1Department of Mechanical Engineering, Michigan State University, East Lansing, MI, USA. lillehoj@egr.msu.edu.
Lab on a Chip
|December 10, 2016
Summary
Researchers developed 3D printed stainless steel molds for rapid plastic microfluidic device fabrication. This cost-effective method enables high-quality microchannel production, accelerating research and commercial applications.
Area of Science:
- Materials Science
- Microfluidics Engineering
Background:
- Plastic microfluidic devices are widely used, with hot embossing being a preferred fabrication method.
- Traditional hot embossing relies on expensive and time-consuming CNC milling or microfabrication for mold production.
Purpose of the Study:
- To introduce a novel method for fabricating plastic microfluidic devices using 3D printed metal molds.
- To optimize 3D printing parameters for producing high-quality stainless steel molds for hot embossing.
Main Methods:
- 3D printing of stainless steel molds with optimized powder composition and processing parameters.
- Hot embossing of poly(methyl methacrylate) (PMMA) using the 3D printed molds.
- Characterization of mold properties (density, surface finish) and replica quality (feature integrity).
Main Results:
- Successfully fabricated 3D printed stainless steel molds with improved density and surface finish.
- Produced PMMA microchannels with good feature integrity and replication quality via hot embossing.
- Achieved leak-free operation and comparable flow performance to conventionally fabricated microchannels.
Conclusions:
- 3D printed metal molds offer a faster, simpler, and potentially lower-cost alternative for plastic microfluidic device fabrication.
- This approach can significantly accelerate prototyping and manufacturing of microfluidic devices for diverse applications.
- The optimized 3D printing process yields high-quality molds suitable for producing functional microfluidic devices.
