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Characterizing particle pairs optically bound in "tractor beam"
Author(s): Jana Damková; Lukáš Chvátal; Oto Brzobohatý; Vojtěch Svak; Martin Šiler; Stephen Simpson; Pavel Zemánek
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Paper Abstract

We report on an experimental and theoretical study of optical binding of polystyrene sphere pairs illuminated by retro-reflected wide Gaussian beam, so-called "tractor beam". We show that depending on configuration of particle pairs, optically bound structure in the "tractor beam" can be pushed or pulled against the beam propagation. We employ holographic video microscopy to analyse object positions in three dimensions and their time evolution. In such a way, we investigate their dynamics in dependence on the geometrical configuration that is compared with numerical simulations. We observe strong dependence of the particle pair motion on the relative distance of the particles.

Paper Details

Date Published: 16 September 2016
PDF: 7 pages
Proc. SPIE 9922, Optical Trapping and Optical Micromanipulation XIII, 99221Q (16 September 2016); doi: 10.1117/12.2237572
Show Author Affiliations
Jana Damková, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Lukáš Chvátal, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Oto Brzobohatý, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Vojtěch Svak, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Martin Šiler, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Stephen Simpson, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Pavel Zemánek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)


Published in SPIE Proceedings Vol. 9922:
Optical Trapping and Optical Micromanipulation XIII
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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