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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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Publication details

The article was received on 15 Jan 2009, accepted on 09 Apr 2009 and first published on 20 Apr 2009


Article type: Paper
DOI: 10.1039/B900934E
Citation: Lab Chip, 2009,9, 2059-2062
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    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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