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Passive micropumping in microfluidics for point-of-care testing
Linfeng Xu1, Anyang Wang2, Xiangpeng Li1
1Department of Bioengineering and Therapeutic Sciences, Schools of Medicine and Pharmacy, University of California San Francisco, 1700 4th Street, Byers Hall 304, San Francisco, California 94158, USA.
Biomicrofluidics
|June 9, 2020
Summary
Passive micropumping offers a simple, low-cost solution for microfluidic point-of-care testing (POCT). This review explores capillary and air-transfer methods, highlighting their potential despite flow control challenges.
Area of Science:
- Microfluidics
- Biomedical Engineering
- Materials Science
Background:
- Micropumping is crucial for microfluidic systems in point-of-care testing (POCT).
- Passive micropumping, utilizing capillary forces or air transfer, presents a viable alternative to complex active pumps.
- Existing passive methods face challenges in flow rate control, often dependent on device design and liquid properties.
Purpose of the Study:
- To systematically review passive micropumping techniques suitable for POCT applications.
- To discuss current applications and future trends in passive micropumping for POCT.
- To highlight the advantages of passive micropumping, including simplicity, ease of use, and cost-effectiveness.
Main Methods:
- Literature review of passive micropumping strategies.
- Analysis of capillary force-driven and air transfer-based micropumping.
- Examination of existing POCT applications utilizing passive micropumping.
Main Results:
- Passive micropumping methods, particularly those based on capillary force and air transfer, are well-suited for POCT.
- While active pumps offer superior flow control, passive methods provide significant advantages in simplicity and cost.
- Current applications demonstrate the feasibility of passive micropumping in various POCT scenarios.
Conclusions:
- Passive micropumping is a promising technology for advancing point-of-care testing.
- Further research into overcoming flow control limitations in passive micropumping is warranted.
- The inherent benefits of passive micropumping ensure its continued relevance and development in the POCT field.
