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Optical forces acting on a particle near photonic crystal surface
Natalia A. Kostina, Mihail I. Petrov ITMO University, Saint-Petersburg, Russian Federation
Abstract:
We consider optical forces acting on resonant particles located near the surface of a photonic crystal (PC). The band structure of the PC makes it possible to change the direction of propagation of the BSW (Bloch surface wave) to the opposite when varying the wavelength of the incident radiation, which leads to a change in the direction of the reactive optical force component. Therefore, there is an effect of switching between the modes of optical attraction and repulsion of particles in narrow spectral ranges, which is prospective for precise sorting of resonant particles. Here we consider sorting of core-shell dielectric-gold nanoparticles with varying shell thickness.
Keywords:
optical forces, resonant particles, sorting, Bloch surface wave.
Received: 10.08.2022 Received in revised form: 27.09.2022 Accepted: 02.10.2022
Citation:
Natalia A. Kostina, Mihail I. Petrov, “Optical forces acting on a particle near photonic crystal surface”, J. Sib. Fed. Univ. Math. Phys., 15:6 (2022), 699–702
Linking options:
https://www.mathnet.ru/eng/jsfu1038 https://www.mathnet.ru/eng/jsfu/v15/i6/p699
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Abstract page: | 50 | Full-text PDF : | 16 | References: | 18 |
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