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Proceedings Paper

Analytical measurement using optical chromatography
Author(s): Joseph D. Taylor; Alex Terray; Sean J. Hart
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Paper Abstract

In our experiments, microscopic polymer and glass spheres in microfluidic devices are manipulated using pressure generated by a high power laser beam. The effect of the laser on the particles and the manipulations are imaged using a microscope lens connect to a CCD camera. Differential forces on particles of varying physical and chemical composition have been measured. The goal is to measure the optical forces on chemically different particles and catalog the associated chemical and physical differences to understand which properties and mechanisms result in force differentials. The aim is to better understand the range of optical separations that may be possible and the extent to which the instrument can differentiate between similar microspheres in terms of size and/or chemical composition.

Paper Details

Date Published: 20 August 2009
PDF: 7 pages
Proc. SPIE 7400, Optical Trapping and Optical Micromanipulation VI, 74000P (20 August 2009); doi: 10.1117/12.828157
Show Author Affiliations
Joseph D. Taylor, ASEE-NRL (United States)
Alex Terray, Naval Research Lab. (United States)
Sean J. Hart, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 7400:
Optical Trapping and Optical Micromanipulation VI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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