Spatially and optically tailored 3D printing for highly miniaturized and integrated microfluidics
Jose L Sanchez Noriega1, Nicholas A Chartrand2, Jonard Corpuz Valdoz2
1Electrical and Computer Engineering Department, Brigham Young University, Provo, UT, 84602, USA.
Nature Communications
|September 18, 2021
Summary
This study introduces a novel 3D printing method to overcome limitations in microfluidic device fabrication. The new process enables higher resolution components, leading to more functional and compact microfluidic devices for biomolecular applications.
Area of Science:
- Biotechnology
- Materials Science
- Engineering
Background:
- Traditional Digital Light Processing Stereolithography (DLP-SL) 3D printing faces limitations in microfluidic device fabrication, particularly for high-resolution features.
- Tradeoffs between layer thickness, exposure time, material strength, and optical penetration hinder the creation of complex microfluidic components.
Purpose of the Study:
- To introduce a generalized 3D printing process that expands the accessible optical dose parameter space.
- To enable the fabrication of higher resolution 3D microfluidic components without requiring a higher-resolution 3D printer.
Main Methods:
- Developed a generalized 3D printing process.
- Expanded the spatially distributed optical dose parameter space.
- Demonstrated fabrication of microfluidic components with high resolution and integration.
Main Results:
- Achieved component miniaturization and high integration in microfluidic devices.
- Successfully fabricated 15 μm × 15 μm valves.
- Created a 2.2 mm × 1.1 mm 10-stage 2-fold serial diluter.
Conclusions:
- The novel 3D printing approach overcomes limitations of traditional DLP-SL for microfluidic fabrication.
- This method facilitates the creation of highly functional and compact microfluidic devices.
- The technology holds promise for diverse biomolecular applications requiring intricate microfluidic designs.
