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Transverse particle dynamics in a Bessel beam
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SYSNO ASEP 0088952 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Transverse particle dynamics in a Bessel beam Title Dynamika částic v besselovském svazku v příčném směru Author(s) Milne, G. (GB)
Dholakia, K. (GB)
McGloin, D. (GB)
Volke-Sepulveda, K. (MX)
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDSource Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 15, č. 21 (2007), s. 13972-13987Number of pages 16 s. Language eng - English Country US - United States Keywords optical tweezers or optical manipulation ; laser trapping ; laser beam shaping Subject RIV BH - Optics, Masers, Lasers R&D Projects LC06007 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) FT-TA2/059 GA MPO - Ministry of Industry and Trade (MPO) CEZ AV0Z20650511 - UPT-D (2005-2011) UT WOS 000251223100056 Annotation Spatially periodic optical fields can be used to sort dielectric microscopic particles as a function of size, shape or refractive index. In this paper we elucidate through both theory and experiment the behavior of silica microspheres moving under the influence of the periodic optical field provided by a Bessel beam. We compare two different computational models, one based on Mie scattering, the other on geometrical ray optics and find good qualitative agreement, with both models predicting the existence of distinct size-dependent phases of particle behavior. We verify these predictions by providing experimental observations of the individual behavioral phases. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2008
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