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Proceedings Paper

Non-spherical optically trapped probes: design, control, and applications
Author(s): J. A. Grieve; D. B. Phillips; S. Hanna; R. W. Bowman; G. M. Gibson; M. J. Padgett; M. J. Miles; D. M. Carberry; S. H. Simpson
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Paper Abstract

In this proceedings paper we show describe how a microtool can be assembled, and tracked in three dimensions such that its full rotational and translational coordinates, q, are recovered. This allows tracking of the motion of any arbitrary point, d, on the microtool's surface. When the micro-tool is held using multiple optical traps the motion of such a point investigates the inside of an ellipsoidal volume - we term this a `thermal ellipsoid. We demonstrate how the shape of this thermal ellipsoid may be controlled by varying the relative trapping power of the optical traps, and adjusting the angle at which the micro-tool is held relative to the focal plane. Our experimental results follow the trends derived by Simpson and Hanna.

Paper Details

Date Published: 10 October 2012
PDF: 13 pages
Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 84581Y (10 October 2012); doi: 10.1117/12.930871
Show Author Affiliations
J. A. Grieve, Univ. of Bristol (United Kingdom)
D. B. Phillips, Univ. of Bristol (United Kingdom)
S. Hanna, Univ. of Bristol (United Kingdom)
R. W. Bowman, Univ. of Glasgow (United Kingdom)
G. M. Gibson, Univ. of Glasgow (United Kingdom)
M. J. Padgett, Univ. of Glasgow (United Kingdom)
M. J. Miles, Univ. of Bristol (United Kingdom)
D. M. Carberry, Univ. of Bristol (United Kingdom)
Univ. of Queensland (Australia)
S. H. Simpson, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 8458:
Optical Trapping and Optical Micromanipulation IX
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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