Počet záznamů: 1

Longitudinal optical binding of several spherical particles studied by the coupled dipole method

  1. 1.
    0333770 - UPT-D 2010 RIV GB eng J - Článek v odborném periodiku
    Karásek, Vítězslav - Brzobohatý, Oto - Zemánek, Pavel
    Longitudinal optical binding of several spherical particles studied by the coupled dipole method.
    Journal of Optics A-Pure and Applied Optics. Roč. 11, č. 3 (2009), 034009:1-9 ISSN 1464-4258
    Grant CEP: GA MŠk(CZ) LC06007; GA MŠk OC08034
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: optical binding * optical tweezers * optical self-arrangement * coupled dipole method * optical forces
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 1.198, rok: 2009

    We employed a coupled dipole method (CDM) to study theoretically the interaction among several spherical particles placed into two counter-propagating mutually incoherent Bessel beams. It has already been demonstrated that, if the intensity of the incident beam is sufficiently high, the scattered light is strong enough to self-arrange the objects in the space. Namely, the counter-propagating and incoherent Bessel beams are extremely useful to be employed because the interaction among the particles via the scattered light is not superimposed by other optical forces coming from the radiation pressure of each beam and axial gradients of the beam intensities. Therefore so-called optical binding between the particles is enhanced and leads to several stable configurations of the particles. We studied these stable configurations using the CDM for various properties of the beams and particles and we also compared these theoretical results with the experimental observations.
    Trvalý link: http://hdl.handle.net/11104/0178682