Analysis of Anapole States in Dielectric Spheres and Application to Near-Field Enhancement

Perfect absorption based on a ceramic anapole metamaterial

“…This phenomenon can be attributed to the interaction of a capacitive enhancement effect on electric resonance with different distances (, C increasing here) and the increasing effective dielectric constant based on effective medium theory with higher duty cycle in the coupling process. 62,63 Meanwhile, for a fixed distance of meta-atoms, the amplitude of scattered energy is directly affected by the Q f value (Fig. S3A–D, ESI†).…”

“…, C increasing here) and the increasing effective dielectric constant based on effective medium theory with higher duty cycle in the coupling process. 62,63 Meanwhile, for a fixed distance of meta-atoms, the amplitude of scattered energy is directly affected by the Q f value (Fig. S3A-D…”

Optical superresonance and generation of extreme magnetic fields in mesoscale dielectric spheres

“…However, over the past about fifteen years, in research on the mesoscale optics of gratings and dielectric particles of arbitrary three-dimensional shape [2][3][4][5][6] with q ~ (2π…20π), new unusual both nonresonant and resonant phenomena were discovered. Among them are: photonic nanojets (including acoustojets, plasmonic jet and plasmonic hook, terajets), structured fields in the form of single and double photonic hooks recently discovered by the authors, high-order Fano resonances [7][8][9][10][11] in the dielectric mesotronics, optical nanovortices 10,12 , effects of overcoming the diffraction limit, effects of the generation of giant magnetic and acoustic fields, flat focusing mirrors, anapoles [13][14][15][16][17] , superoscillation effects [18][19][20][21] and others. This short report gives a brief overview of some of this recently published phenomena [22][23] .…”

Time domain photonic hook beam for manipulating nanoparticles along curved trajectories

“…Over the past about decade, researches of the wavelength-scaled optics of dielectric gratings and particles with Mie size parameter 1 q ~ 10 ( 2 / q R π λ = , λ is a wavelength and R -is a radius of dielectric sphere), allow to discovered a new unusual optical phenomena [2][3][4][5][6][7][8][9][10][11] . Among them do the authors recently discover the acoustojets, plasmonic jet and terajets.…”