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The development of new approaches to tuning the resonant magnetic response of simple all‐dielectric nanostructures is very important in modern nanophotonics. Here, it is shown that a resonant magnetic octupole (MOCT) response can be obtained by dividing a solid rectangular silicon block to a quadrumer structure with the introduction of narrow gaps between four nanocubes. The spectral position of the...
We explore the optical multipole resonances in silicon nanoparticles of a conical shape. We use the Finite Element Method (FEM) for solving the Maxwell equations for analysis of optical properties. Harnessing the multipole decomposition technique, we study excited optical resonances in silicon nanoparticles and the influence of high-order multipoles to scattering patterns of considered nanoparticles...
In this paper, we demonstrate numerically that T1O2 microparticles can exhibit a destructive mode interference in the range 1–3 THz. Resonantly strong destructive interference of the toroidal and electric dipole contributions to the scattered field was achieved by a geometry tuning. An anapole mode can be observed as a composition of electric and toroidal dipole moments.
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