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Issue 14, 2009
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Multipoint viscosity measurements in microfluidic channels using optical tweezers

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Abstract

We demonstrate the technique of multipoint viscosity measurements incorporating the accurate calibration of micron sized particles. We describe the use of a high-speed camera to measure the residual motion of particles trapped in holographic optical tweezers, enabling us to calculate the fluid viscosity at multiple points across the field-of-view of the microscope within a microfluidic system.

Graphical abstract: Multipoint viscosity measurements in microfluidic channels using optical tweezers

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Article information


Submitted
15 Jan 2009
Accepted
09 Apr 2009
First published
20 Apr 2009

Lab Chip, 2009,9, 2059-2062
Article type
Paper

Multipoint viscosity measurements in microfluidic channels using optical tweezers

S. Keen, A. Yao, J. Leach, R. Di Leonardo, C. Saunter, G. Love, J. Cooper and M. Padgett, Lab Chip, 2009, 9, 2059
DOI: 10.1039/B900934E

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