Related Experiment Videos
Rapid prototyping for injection moulded integrated microfluidic devices and diffractive element arrays.
John P Hulme1, Stephan Mohr, Nicholas J Goddard
1Department of Instrumentation and Analytical Science, University of Manchester Institute of Science and Technology, Manchester, UKM60 1QD. J.Hulme-2@umist.ac.uk
Lab on a Chip
|April 22, 2004
Summary
Rapid microfluidic system fabrication is now possible in under four hours using advanced soft lithography and UV-curable epoxy. This breakthrough enables quick design, fabrication, and injection molding of microfluidic devices with integrated optical elements.
Area of Science:
- Materials Science
- Microfluidics
- Optical Engineering
Background:
- Microfluidic devices are crucial for various applications but often require lengthy fabrication times.
- Integrating optical elements and coupling mechanisms into microfluidic systems presents significant manufacturing challenges.
Purpose of the Study:
- To develop rapid fabrication procedures for microfluidic systems with integrated optical components.
- To reduce the turnaround time from design to a finished, injection-molded microfluidic device.
Main Methods:
- Utilized soft lithography to create epoxy masters for optical arrays and diffractive elements.
- Employed polyester surface chemistry with sodium dodecyl sulfate (SDS) to control epoxy adhesion during master fabrication.
- Achieved single-step transfer of microfluidic designs and holographic gratings onto the device base.
Main Results:
- Successfully fabricated microfluidic systems with on-board coupling elements or optical array platforms.
- Demonstrated a complete fabrication and injection molding process in under four hours (3.5 hours).
- Enabled the integration of a 632 nm holographic grating as a coupling element.
Conclusions:
- The described fabrication procedures significantly accelerate the production of complex microfluidic devices.
- This rapid prototyping method facilitates faster research and development in microfluidics and integrated optics.
- The technique is versatile for both microchannel and optical array platform fabrication.