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Fabrication of Fluidic Devices through Dissolution of 3D Printed Material in PDMS Mold

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Conference

2023 ASEE Annual Conference & Exposition

Location

Baltimore , Maryland

Publication Date

June 25, 2023

Start Date

June 25, 2023

End Date

June 28, 2023

Conference Session

Mechanical Engineering Division (MECH) Technical Session 2: Thermo-Fluids Projects and Active Learning

Tagged Division

Mechanical Engineering Division (MECH)

Page Count

14

DOI

10.18260/1-2--43671

Permanent URL

https://peer.asee.org/43671

Download Count

201

Paper Authors

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Gavin Bathgate

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Dylan Perlino

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Cameron Howard

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Owen Frink

biography

Reza Rashidi SUNY University at Buffalo Orcid 16x16 orcid.org/0000-0002-7741-3140

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Dr. Reza Rashidi is an Associate Professor at SUNY University at Buffalo. He was an Associate Professor at SUNY Alfred State when he supervised the project presented in this paper. He received his Ph.D degree in Mechanical Engineering (MEMS development) from the University of British Columbia in 2010 and completed his Postdoctoral Fellowship in Development of Biomedical Sensing Devices in the Department of Electrical and Computer Engineering at the University of British Columbia in 2011. He also received a minor degree in Engineering Management and Entrepreneurship from the University of British Columbia in 2009. He has over 16 years of industrial experience. Before joining Alfred State, Dr. Rashidi was a Senior Engineer at Siemens, where he worked on research projects from 2011 to 2016. His expertise is in the development of nano, micro and mini sensors and actuators in Biomedical Engineering and Energy applications. Dr. Rashidi was a recipient of several awards including the 2008 British Columbia Innovation award, administered by BC province, Canada. He has written over 30 research articles and is currently a reviewer and technical committee member of several journals and conferences worldwide.

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Abstract

Microfluidic devices have been used in various applications such as chemical, biological, clinical, pharmaceutical, etc. This has motivated researchers to develop inexpensive, straightforward techniques to fabricate such devices. A team of four senior undergraduate students in a microfabrication course completed a project to develop a novel method for fabricating miniature fluidic devices using dissolving a common material used in 3D printing, Acrylonitrile Butadiene Styrene (ABS) in a Polydimethylsiloxane (PDMS) mold. The students performed all development steps, including ideation, literature review, calculation, design, fabrication, assembly, testing, and writing. This paper presents the results of fabricating a complex geometry fluidic design, which was used as an example to show the effectiveness of the fabrication process. The device selected in this research is a Tesla Valve with complex features. Two device designs with different features were 3D modeled and simulated using the SolidWorks Flow module before printing to ensure functionality and guide the design process. Next, the devices were 3D printed with ABS plastic, cast inside the PDMS material, and dissolved in an acetone bath, leaving flexible PDMS fluidic channels. The design performance was tested by forcing water at two different pressures through the devices, and the time to drain volume was measured. Finally, the entire water was completely drained through the devices, proving the successful fabrication of the devices.

Bathgate, G., & Perlino, D., & Howard, C., & Frink, O., & Rashidi, R. (2023, June), Fabrication of Fluidic Devices through Dissolution of 3D Printed Material in PDMS Mold Paper presented at 2023 ASEE Annual Conference & Exposition, Baltimore , Maryland. 10.18260/1-2--43671

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