| Autor: |
Jaap den Toonder, Femke Bos, Dick Broer, Laura Filippini, Murray Gillies, Judith de Goede, Titie Mol, Mireille Reijme, Wim Talen, Hans Wilderbeek, Vinayak Khatavkar, Patrick Anderson |
| Předmět: |
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| Zdroj: |
Lab on a Chip; Mar2008, Vol. 8 Issue 4, p533-541, 9p |
| Abstrakt: |
In lab-on-chip devices, on which complete (bio-)chemical analysis laboratories are miniaturized and integrated, it is essential to manipulate fluids in sub-millimetre channels and sub-microlitre chambers. A special challenge in these small micro-fluidic systems is to create good mixing flows, since it is almost impossible to generate turbulence. We propose an active micro-fluidic mixing concept inspired by nature, namely by micro-organisms that swim through a liquid by oscillating microscopic hairs, cilia, that cover their surface. We have fabricated artificial cilia consisting of electro-statically actuated polymer structures, and have integrated these in a micro-fluidic channel. Flow visualization experiments show that the cilia can generate substantial fluid velocities, up to 0.6 mm s−1. In addition, very efficient mixing is obtained using specially designed geometrical cilia configurations in a micro-channel. Since the artificial cilia can be actively controlled using electrical signals, they have exciting applications in micro-fluidic devices. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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