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We review the recent advances in modern wireless power transfer (WPT) resonators design described in details in a review paper: M. Song et al. Applied Physics Reviews, vol. 4, 021102, (2017). Resonators play an important role in magnetic resonant WPT systems. Conventional resonators are based on metallic coils. We show how these resonators are evolving aiming at the miniaturization and compactness...
Nanoparticle oligomers made of metallic and/or dielectric nanoparticles are able to support sharp Fano resonances originating from an interference of two resonant modes with different spectral width. For practical applications, it is necessary to have an approach for tuning the Fano resonances of a nanostructure after its fabrication. Herein, we demonstrate a novel type of reconfigurable hybrid metaldielectric...
We investigate mid-range wireless power transfer systems based on three types of dielectric resonators, i.e. the spherical resonators made of ceramic with permittivity of ε = 80, the resonator made of water with permittivity of ε = 78 and the disk resonator made of ceramic with permittivity of ε = 1000. The experimental investigation for the ceramic sphere and disk and the numerical investigation...
Colossal permittivity dielectric resonators for magnetic resonant wireless power transfer systems are proposed. The wireless power transfer system based on two dielectric resonators with the permittivity ε=1000 operating at the frequency 230 MHz is established. Numerical simulation and experimental investigation of the WPT system efficiency are performed. The measured efficiency of 50% is achieved...
Here, we propose a novel type of hybrid oligomers consisting of asymmetric metal-dielectric nan-odimers which have magnetic Fano resonances in the visible range. We numerically show that the profile of this Fano resonance and its position can be changed by precise femtosecond laser reshaping of metal nanoparticles in the nanodimers.
Semiconductor nanoparticles, supporting electric and magnetic optical resonances, are promising basic elements for a number of linear and nonlinear optical applications. Here we study elastic and inelastic (Raman) light scattering on crystalline silicon nanoparticles and reveal their interrelations for both s- and p-polarized light. We demonstrate experimentally a 2-fold enhancement of Raman signal...
The concept of all-dielectric nanoantennas operating in optical frequency domain is suggested. A huygens source consisting of a high-permittivity dielectric sphere excited by a point-like dipole is considered. We demonstarte that in addition to the electric resonance, the sphere exhibits a very strong magnetic resonance, resulting in a narrow radiation pattern, overall high nanoantenna directivity...
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