Non-spherical optically trapped probes: design, control, and applications

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

doi:10.1117/12.930871

10 October 2012 Non-spherical optically trapped probes: design, control, and applications

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

Author Affiliations +

Proceedings Volume 8458, Optical Trapping and Optical Micromanipulation IX; 84581Y (2012) https://doi.org/10.1117/12.930871
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

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.

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J. A. Grieve, D. B. Phillips, S. Hanna, R. W. Bowman, G. M. Gibson, M. J. Padgett, M. J. Miles, D. M. Carberry, and S. H. Simpson "Non-spherical optically trapped probes: design, control, and applications", Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 84581Y (10 October 2012); https://doi.org/10.1117/12.930871

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