Journal
LAB ON A CHIP
Volume 10, Issue 17, Pages 2251-2257Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c004504g
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Funding
- Swedish Research Council [2007-4946]
- Innovation for Future Health-Cell CARE
- Foundation for Strategic Research
- Crafoordstiftelsen
- Carl Trygger Foundation
- Royal Physiographic Society in Lund
- Knut & Alice Wallenberg Foundation
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Non-contact trapping using acoustic standing waves has shown promising results in cell-based research lately. However, the devices demonstrated are normally fabricated using microfabrication or precision machining methods leading to a high unit cost. In e. g. clinical or forensic applications avoiding cross-contamination, carryover or infection is of outmost importance. In these applications disposable devices are key elements, thus making the cost per unit a critical factor. A solution is presented here where low-cost off-the-shelf glass capillaries are used as resonators for standing wave trapping. Single-mode as well as multi-node trapping is demonstrated with an excellent agreement between simulated and experimentally found operation frequencies. Single particle trapping is verified at 7.53 MHz with a trapping force on a 10 mm particle of up to 1.27 nN. The non-contact trapping is proved using confocal microscopy. Finally, an application is presented where the capillary is used as a pipette for aspirating, trapping and dispensing red blood cells.
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