Lee, M.P., Curran, A., Gibson, G.M. , Tassieri, M. , Heckenberg, N.R. and Padgett, M.J. (2012) Optical shield: measuring viscosity of turbid fluids using optical tweezers. Optics Express, 20(11), pp. 12127-12132. (doi: 10.1364/OE.20.012127)
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Abstract
The viscosity of a fluid can be measured by tracking the motion of a suspended micron-sized particle trapped by optical tweezers. However, when the particle density is high, additional particles entering the trap compromise the tracking procedure and degrade the accuracy of the measurement. In this work we introduce an additional Laguerre–Gaussian, i.e. annular, beam surrounding the trap, acting as an optical shield to exclude contaminating particles.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Gibson, Dr Graham and Padgett, Professor Miles and Tassieri, Dr Manlio and Curran, Dr Arran |
| Authors: | Lee, M.P., Curran, A., Gibson, G.M., Tassieri, M., Heckenberg, N.R., and Padgett, M.J. |
| College/School: | College of Science and Engineering > School of Engineering > Biomedical Engineering College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Optics Express |
| ISSN: | 1094-4087 |
| Copyright Holders: | Copyright © 2012 Optical Society of America |
| First Published: | First published in Optics Express 20(11):12127-12132 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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