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Proceedings Paper

Investigating hydrodynamic synchronisation using holographic optical tweezers
Author(s): Stuart Box; Luke Debono; Nicolas Bruot; Jurij Kotar; Pietro Cicuta; Mervyn Miles; Simon Hanna; David Phillips; Stephen Simpson
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Paper Abstract

Coordinated motion at low Reynolds number is widely observed in biological micro-systems, but the underlying mechanisms are often unclear. A holographic optical tweezers system is used to experimentally study this phenomenon, by employing optical forces to drive a pair of coplanar microspheres in circular orbits with a constant tangential force. In this system synchronisation is caused by hydrodynamic forces arising from the motion of the two spheres. The timescales of their synchronisation from large initial phase differences are explored and found to be dependent on how stiffly the microspheres are confined to their circular orbits. These measured timescales show good agreement with numerical simulations.

Paper Details

Date Published: 16 September 2014
PDF: 10 pages
Proc. SPIE 9164, Optical Trapping and Optical Micromanipulation XI, 91641Q (16 September 2014); doi: 10.1117/12.2064320
Show Author Affiliations
Stuart Box, Univ. of Bristol (United Kingdom)
Luke Debono, Univ. of Bristol (United Kingdom)
Nicolas Bruot, Univ. of Cambridge (United Kingdom)
Jurij Kotar, Univ. of Cambridge (United Kingdom)
Pietro Cicuta, Univ. of Cambridge (United Kingdom)
Mervyn Miles, Univ. of Bristol (United Kingdom)
Simon Hanna, Univ. of Bristol (United Kingdom)
David Phillips, Univ. of Bristol (United Kingdom)
Stephen Simpson, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 9164:
Optical Trapping and Optical Micromanipulation XI
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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