TY - GEN
T1 - Numerical and analytical models for calculating optical forces near auxiliary plasmonic substrates
AU - Shalin, Alexander S.
AU - Ivinskaya, Aliaksandra
AU - Kostina, Natalia
AU - Petrov, Mihail I.
AU - Bogdanov, Andrey A.
AU - Sukhov, Sergei
AU - Ginzburg, Pavel
N1 - Publisher Copyright: © 2019 Author(s).
PY - 2019/12/10
Y1 - 2019/12/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85076732378&partnerID=8YFLogxK
U2 - https://doi.org/10.1063/1.5137933
DO - https://doi.org/10.1063/1.5137933
M3 - منشور من مؤتمر
T3 - AIP Conference Proceedings
BT - Proceedings of the International Conference of Computational Methods in Sciences and Engineering 2019, ICCMSE 2019
A2 - Simos, Theodore E.
A2 - Kalogiratou, Zacharoula
A2 - Monovasilis, Theodore
T2 - International Conference of Computational Methods in Sciences and Engineering 2019, ICCMSE 2019
Y2 - 1 May 2019 through 5 May 2019
ER -