Numerical and analytical models for calculating optical forces near auxiliary plasmonic substrates

Alexander S. Shalin, Aliaksandra Ivinskaya, Natalia Kostina, Mihail I. Petrov, Andrey A. Bogdanov, Sergei Sukhov, Pavel Ginzburg

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

Abstract

The optical force acting on a nanoparticle near a planar substrate is governed by incident light and excitation of surface and volume modes of the substrate. The realization of negative optical forces ("tractor beams") via propagating plasmon-polaritones and volume modes will be shown and considered in detail on the basis of the described analytical and numerical models for certain types of anisotropic substrates. In addition, optical tweezers performance is investigated when the Gaussian beam is focused on the metal substrate with nanoparticle. When the beam is focused above the substrate optical force increases about an order of magnitude due to evanescent field of surface plasmon. Novel effect of repulsion from Gaussian beam ("anti-trapping") is obtained when the beam waist is moved below the substrate which is confirmed by both the analytical approach and finite element simulation.

Original languageEnglish
Title of host publicationProceedings of the International Conference of Computational Methods in Sciences and Engineering 2019, ICCMSE 2019
EditorsTheodore E. Simos, Zacharoula Kalogiratou, Theodore Monovasilis
ISBN (Electronic)9780735419339
DOIs
StatePublished - 10 Dec 2019
EventInternational Conference of Computational Methods in Sciences and Engineering 2019, ICCMSE 2019 - Rhodes, Greece
Duration: 1 May 20195 May 2019

Publication series

NameAIP Conference Proceedings
Volume2186

Conference

ConferenceInternational Conference of Computational Methods in Sciences and Engineering 2019, ICCMSE 2019
Country/TerritoryGreece
CityRhodes
Period1/05/195/05/19

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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