0491760 - ÚPT 2019 RIV US eng C - Conference Paper (international conference)
Damková, Jana - Chvátal, Lukáš - Ježek, Jan - Oulehla, Jindřich - Brzobohatý, Oto - Zemánek, Pavel
Motion of optically bound particles in tractor beam.
Proceedings of SPIE. In: Optical Manipulation Conference (Proceedingsn mof SPIE). Vol. 10712. Bellingham: SPIE, 2018, č. článku 107120Y. ISBN 978-1-5106-1982-1. ISSN 0277-786X.
[Optical Manipulation Conference. Yokohama (JP), 25.04.2018-27.04.2018]
R&D Projects: GA ČR(CZ) GA14-16195S; GA TA ČR TE01020233; GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Institutional support: RVO:68081731
Keywords : optical binding * self-organization * optical force * optical delivery * optical tractor beam * holographic video microscopy
OECD category: Optics (including laser optics and quantum optics)
DOI: https://doi.org/10.1117/12.2319363

We investigate motion of particle pairs optically bound in tractor beam. The tractor beam can exert a negative force on a scatterer, in contrast to the pushing force associated with radiation pressure, which can pull the scatterer towards the light source. The particle movements can be enhanced by long-range interaction between illuminated objects, called optical binding. We study optical binding of two micro-particles in various geometrical configurations and investigate their motional behaviour in tractor beam. We demonstrate that motion of two optically bound objects strongly depends on their mutual distance and spatial orientation. Such configuration-dependent optical forces add an extra flexibility to our ability to control matter with light. Understanding these interactions opens the door to new applications involving the sorting or delivery of colloidal self-organized structures.

Permanent Link: http://hdl.handle.net/11104/0285398