Abstract
In this paper, we present a novel robust PDMS membrane micropump with two one-way micro-ball valves for biomedical applications. The actuating membrane is driven by magnetic force of two miniature permanent magnets. The micropump consists of two PDMS layers, one holding the micro-ball valves and actuating chamber and the second holding the top magnet and covering the chamber and microvalves. A simple approach is used to fabricate a high performance micro-ball valve using an embedded Teflon microtube. A small DC motor (6mm in diameter and 15mm in length) with two permanent magnetic discs (NdFeB) mounted on its shaft is used to actuate the membrane-mounted magnet This configuration yields a large pumping rate with very low power consumption. Maximum pumping rate of 260μL/min was achieved at the input power of 21 mW, the highest pumping rate reported in the literature for micropumps at such power consumption.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2650-2653 |
| Number of pages | 4 |
| Journal | Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings |
| Volume | 26 IV |
| State | Published - Dec 1 2004 |
| Externally published | Yes |
| Event | Conference Proceedings - 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2004 - San Francisco, CA, United States Duration: Sep 1 2004 → Sep 5 2004 |
Keywords
- Micro-Ball Valve
- Microfluidics
- Micropump
- PDMS
- Soft Lithography
ASJC Scopus subject areas
- Signal Processing
- Biomedical Engineering
- Computer Vision and Pattern Recognition
- Health Informatics