Highly efficient unidirectional forward scattering induced by resonant interference in a metal-dielectric heterodimer

• Published in: Nanoscale Vol. 12; no. 43; pp. 22289 - 22297
• Main Authors: Sun, Song, Wang, Dacheng, Feng, Zheng, Tan, Wei
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 12.11.2020
• Subjects: Broadband; Dielectrics; Dimers; Dipole interactions; Dipole moments; Electric dipoles; Forward scattering; Interaction models; Interference; Magnetic dipoles; Metallurgical constituents; Nanoparticles; Polarization; Resonance scattering; Titanium dioxide

We demonstrate that a metal-dielectric heterodimer structure can satisfy a nearly ideal first Kerker condition at a wavelength close to the resonance peak of the dimer, yielding efficient unidirectional forward scattering with a high forward-to-backward scattering ratio ( 48 dB) and remarkable enhan...