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Cardiac Muscle-cell Based Actuator and Self-stabilizing Biorobot - PART 1
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Epoxy coating to prolong actuation time in degas-driven PDMS micropumps.
Yara Alvarez-Braña1,2, Andreu Benavent-Claró3,4, Fernando Benito-Lopez2
1Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain. lourdes.basabe@ehu.eus.
Soft Matter
|February 10, 2026
Summary
Polymeric micropumps offer self-powered flow control for lab-on-a-chip devices, extending operation to over 10 hours. This advancement enhances portability by removing bulky electronics for extended microfluidic experiments.
Area of Science:
- Microfluidics
- Biomedical Engineering
- Materials Science
Background:
- Lab-on-a-chip (LOC) technology aims for portability, but bulky electronic flow control hinders this.
- Self-powered microfluidics eliminates electronic components, improving LOC device portability.
- Existing self-powered systems typically operate for only 1-2 hours, limiting applications like long-term cell culture.
Purpose of the Study:
- To investigate polymeric micropumps for self-powered flow control in microfluidics.
- To demonstrate extended operational durations beyond traditional self-powered systems.
- To develop tools for designing customized self-powered microsystems for diverse applications.
Main Methods:
- Monitoring fluid front dynamics in a 1.5-meter microchannel.
- Developing calibration curves for different polymeric micropump types.
- Analyzing the influence of degassing time and effective surface area on pump actuation.
Main Results:
- Polymeric micropumps achieved self-powered flow control for 10+ hours.
- Pump actuation time is dependent on degassing time and effective surface area.
- Calibration curves enable comparison of mathematical models for flow rate and actuation time prediction.
Conclusions:
- Polymeric micropumps enable self-powered microfluidic flow control for intermediate durations (several to 10+ hours).
- Understanding factors like degassing and surface area optimizes micropump performance.
- Epoxy-coated PDMS pumps show promise for long-term, controlled-flow applications in microfluidics.
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