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Low-cost feedback-controlled syringe pressure pumps for microfluidics applications
John R Lake1, Keith C Heyde2, Warren C Ruder1
1Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States of America.
Plos One
|April 4, 2017
Summary
Researchers developed a low-cost, Arduino-controlled syringe pump for microfluidics. This device uses feedback control for stable, precise pressure regulation in microfluidic systems.
Area of Science:
- Microfluidics
- Bioengineering
- Chemistry
- Nanotechnology
Background:
- Microfluidic devices require precise flow control.
- Commercially available syringe pumps are expensive and have limitations.
Purpose of the Study:
- To develop a low-cost, feedback-controlled syringe pump for microfluidics.
- To offer a programmable and easily operated alternative to existing pumps.
Main Methods:
- Utilized an open-source Arduino microcontroller.
- Implemented PID and bang-bang control methods for pressure regulation.
- Tested the pump with two microfluidic geometries.
Main Results:
- Achieved ±1% stability with PID control.
- Achieved ±5% stability with bang-bang control.
- Demonstrated response times under 1 second.
Conclusions:
- The developed syringe pump provides a cost-effective solution for microfluidic applications.
- Feedback control ensures stable and well-regulated pressure-driven flow.
- This device enhances accessibility for microfluidic research.