Lee, M.P., Gibson, G.M. , Phillips, D., Padgett, M.J. and Tassieri, M. (2014) Dynamic stereo microscopy for studying particle sedimentation. Optics Express, 22(4), pp. 4671-4677. (doi: 10.1364/OE.22.004671)
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Publisher's URL: http://dx.doi.org/10.1364/OE.22.004671
Abstract
We demonstrate a new method for measuring the sedimentation of a single colloidal bead by using a combination of optical tweezers and a stereo microscope based on a spatial light modulator. We use optical tweezers to raise a micron-sized silica bead to a fixed height and then release it to observe its 3D motion while it sediments under gravity. This experimental procedure provides two independent measurements of bead diameter and a measure of Faxén’s correction, where the motion changes due to presence of the boundary.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Gibson, Dr Graham and Lee, Mr Michael and Padgett, Professor Miles and Tassieri, Dr Manlio and Phillips, Dr David |
Authors: | Lee, M.P., Gibson, G.M., Phillips, D., Padgett, M.J., and Tassieri, M. |
College/School: | College of Science and Engineering > School of Physics and Astronomy College of Science and Engineering > School of Engineering > Biomedical Engineering |
Journal Name: | Optics Express |
Publisher: | Optical Society of America |
ISSN: | 1094-4087 |
ISSN (Online): | 1094-4087 |
Copyright Holders: | Copyright © 2014 Optical Society of America |
First Published: | First published in Optics Express 22(4):4671-4677 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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