AVS 65th International Symposium & Exhibition
    MEMS and NEMS Group Wednesday Sessions
       Session MN+NS+PS-WeM

Invited Paper MN+NS+PS-WeM1
Miniaturizing 3D Printed Microfluidics: State-of-the-Art and Outlook

Wednesday, October 24, 2018, 8:00 am, Room 202B

Session: IoT Session: Multiscale Manufacturing: Enabling Materials and Processes
Presenter: Greg Nordin, Brigham Young University
Correspondent: Click to Email
While there is great interest in 3D printing for microfluidic device fabrication, the challenge has been to achieve feature sizes that are in the truly microfluidic regime (<100 μm). The fundamental problem is that commercial tools and materials, which excel in many other application areas, have not been developed to address the unique needs of microfluidic device fabrication. Consequently, we have created our own stereolithographic 3D printer and materials that are specifically tailored to meet these needs. We show that flow channels as small as 18 μm x 20 μm can be reliably fabricated, as well as compact active elements such as valves and pumps. With these capabilities, we demonstrate highly integrated 3D printed microfluidic devices that measure only a few millimeters on a side, and that integrate separate chip-to-world interfaces through high density interconnects (up to 88 interconnects per square mm) that are directly 3D printed as part of a device chip. These advances open the door to 3D printing as a replacement for expensive cleanroom fabrication processes, with the additional advantage of fast (30 minute), parallel fabrication of many devices in a single print run due to their small size.