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Multi-channel peristaltic pump for microfluidic applications featuring monolithic PDMS inlay.

Peder Skafte-Pedersen¹, David Sabourin, Martin Dufva

¹Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Building 345 East, DK-2800, Kongens, Lyngby, Denmark.

|October 1, 2009

Summary

Researchers developed a low-cost, miniaturized 12-channel peristaltic pump for microfluidic applications. This portable device offers precise flow control, suitable for resource-limited settings.

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Area of Science:

Microfluidics
Mechanical Engineering
Biomedical Devices

Background:

Microfluidic systems require precise fluid handling.
Existing pumps can be bulky, expensive, or generate pulsating flow.
Miniaturized, cost-effective pumps are needed for broader accessibility.

Purpose of the Study:

To design, fabricate, and characterize a miniaturized, mechanically-actuated 12-channel peristaltic pump.
To evaluate pump performance, including flow rate and variability.
To assess the suitability of the pump for microfluidic applications and resource-limited environments.

Main Methods:

Fabrication using simple, low-cost materials and methods.
Utilizing a monolithic polydimethylsiloxane (PDMS) inlay with integrated channels.
Testing two pump configurations, one optimized for reduced pulsation.
Characterizing flow rates from sub-microL/min to microL/min.

Main Results:

Achieved flow rates in the sub-microL/min to microL/min range.
Demonstrated channel-to-channel flow rate variability comparable to commercial systems at lower flow rates.
The miniaturized pump (40 mm x 80 mm) is portable and suitable for microscope integration.
The design facilitates use in remote and resource-limited locations.

Conclusions:

A cost-effective, miniaturized 12-channel peristaltic pump for microfluidics was successfully developed.
The pump offers precise flow control and low variability, rivaling commercial systems.
Its compact size and portability make it ideal for on-stage microscopy and resource-limited applications.