Passive optical sorting of plasmon nanoparticles: numerical investigation of optimal illumination

M. Ploschner, M. Mazilu, T. Cizmar, K. Dholakia

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    We numerically investigate passive optical sorting of plasmon nanoparticles and explore the trajectories of nanoparticles in sorting fields with the optimal wavelength and the optimal beam shape. The optimal wavelength is determined from speed difference to temperature increase ratio of the system. The optimal beam shape for arbitrary size of sorting region is determined using the force optical eigenmode (FOEi) method. Study of deflection trajectories of nanoparticles passing through the optimised field in microfluidic channel scenario demonstrates the feasibility of the method and sets the optimal fluid speed in microfluidic channel to fully utilise the potential of optimised sorting field. The method is demonstrated in specific case of gold nanoparticles of radius 40nm and 50nm respectively.

    Original languageEnglish
    Title of host publicationThe Fourth International Workshop on Theoretical and Computational Nanophotonics
    Subtitle of host publicationTaCoNa-Photonics 2011
    EditorsDmitry N. Chigrin
    Place of PublicationMelville, N.Y
    PublisherAmerican Institute of Physics
    Number of pages3
    ISBN (Print)9780735409682
    Publication statusPublished - 2011
    Event4th International Workshop on Theoretical and Computational Nanophotonics - Bad Honnef, Germany
    Duration: 26 Oct 201128 Oct 2011

    Publication series

    NameAIP conference proceedings
    PublisherAmerican Institue of Physics
    ISSN (Print)0094-243X


    Conference4th International Workshop on Theoretical and Computational Nanophotonics
    Abbreviated titleTaCoNa Photonics 2011
    CityBad Honnef


    • Gold nanoparticles
    • Optical forces
    • Optical sorting
    • Plasmonics

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