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Proceedings Paper

Optical pumps and sensors for microfluidic devices
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Paper Abstract

We use holographic optical tweezers to create and monitor the liquid flow within a micro-fluidic device. Using the tweezers to both trap and spin micron-sized beads within a 10-20 micron wide channel creates a fluid flow of the order of 200 cubic microns/sec. We also use the optical tweezers to measure the fluid flow by trapping and releasing probe particles that are imaged with high temporal and spatial resolution. Using the multi-trap capability of the holographic optical tweezers we measure the transverse fluid velocity at many positions simultaneously with an accuracy of better than 1 micron/sec. Such studies are highly pertinent to lab-on-chip systems for various applications and studies within the biosciences.

Paper Details

Date Published: 9 February 2006
PDF: 6 pages
Proc. SPIE 6131, Nanomanipulation with Light II, 61310B (9 February 2006); doi: 10.1117/12.649505
Show Author Affiliations
Miles Padgett, Univ. of Glasgow (United Kingdom)
Roberto Di Leonardo, INFM-CRS, Univ. degli Studi di Roma La Sapienza (Italy)
Jonathan Leach, Univ. of Glasgow (United Kingdom)
Hasan Mushfique, Univ. of Glasgow (United Kingdom)
Jon Cooper, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 6131:
Nanomanipulation with Light II
David L. Andrews, Editor(s)

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