Anapole Meta-Atoms: Nonradiating Electric and Magnetic Sources

Designing two-dimensional temperature profiles using tunable thermoplasmonics

“…As of today, considerable advances have been achieved towards comprehending the role of enhanced light-matter interaction in generating and controlling heat at the nanoscale. Special attention has been paid to localized surface plasmon resonances (LSPRs) in metallic nanostructures, 2,[4][5][6] multipolar Mie modes in high refractive index dielectric microstructures, 1,7,8 multipolar resonances in epsilon-near-zero (ENZ) media, 9,10 Fano resonances in plasmonic nanostructures, [11][12][13] anapole states in well-designed structures, [14][15][16] and even more exotic electromagnetic excitations, such as topologically protected edge states 17,18 and bound states in the continuum (BIC). 10,19 Also worth mentioning is a nonreciprocal semi-transparent isolator based on the magneto-optical Weyl semimetal EuCd 2 As 2 , recently created by Park et al, 20 which enables full absorption of the incident irradiation with zero backward scattering.…”

Achieving maximum scattering circular dichroism through the excitation of anapole states within chiral Mie nanospheres

“…Specifically, a 1 can be well predicted by the amplitude of MD [Fig. 3 lead to the completely destructive interference, resulting in the excitation of anapole states [26][27][28][29][30][31][32]. With the illumination of E (+) , the amplitude of the MD is almost unchanged as shown in Fig.…”

“…The total scattering field can be expressed as the sum of all the terms associated with different orders of perturbing sources. The total scattering coefficients a mn and b mn can be divided into nonchiral and chiral parts, respectively, i.e., a mn (±κ 1 ) = A mn ± A mn , (30) b mn (±κ 1 ) = B mn ± B mn , (31) where m and n are integers to denote the orders of VSH field.…”

Transverse Kerker effect in all-dielectric spheroidal particles

“…For the first glance, generalized Kerker effect may seem similar to electric and magnetic anapole states and hybrid anapole as well 19 – 21 . However, the main difference is that generalized Kerker effect is accompanied by transverse scattering while anapole particle does not scatter at all exceptionally up to higher multipoles in agreement with optical theorem 22 – 26 .…”