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

M. Ploschner*, M. Mazilu, T. Čižmár, K. Dholakia

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

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 40 nm and 50 nm respectively.

Original languageEnglish
Title of host publicationTaCoNa-Photonics 2011
Subtitle of host publicationthe Fourth International Workshop on Theoretical and Computational Nanophotonics
EditorsDmitry N. Chigrin
Place of PublicationCollege Park, MD
PublisherAmerican Institute of Physics
Pages85-87
Number of pages3
ISBN (Print)9780735409682
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event4th International Workshop on Theoretical and Computational Nanophotonics, TaCoNa-Photonics 2011 - Bad Honnef, Germany
Duration: 26 Oct 201128 Oct 2011

Publication series

NameAIP conference proceedings
Volume1398

Other

Other4th International Workshop on Theoretical and Computational Nanophotonics, TaCoNa-Photonics 2011
CountryGermany
CityBad Honnef
Period26/10/1128/10/11

Keywords

  • gold nanoparticles
  • optical forces
  • optical sorting
  • plasmonics

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