On the scattering directionality of a dielectric particle dimer of High Refractive Index

Abstract: Low-losses and directionality effects exhibited by High Refractive Index Dielectric particles make them attractive for applications where radiation direction control is relevant. For instance, isolated metallo-dielectric core-shell particles or aggregates (dimers) of High Refractive Index Dielectric particles have been proposed for building operational switching devices. Also, the possibility of using isolated High Refractive Index Dielectric particles for optimizing solar cells performance has been explored. Here, we present experimental evidence in the microwave range, that a High Refractive Index Dielectric dimer of spherical particles is more efficient for redirecting the incident radiation in the forward direction than the isolated case. In fact, we report two spectral regions in the dipolar spectral range where the incident intensity is mostly scattered in the forward direction. They correspond to the Zero-Backward condition (also observed for isolated particles) and to a new condition, denoted as ?near Zero-Backward? condition, which comes from the interaction effects between the particles. The proposed configuration has implications in solar energy harvesting devices and in radiation guiding.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Scientific Reportsvolume 8, Article number: 7976 (2018)

Editorial: Nature Publishing Group

 Fecha de publicación: 22/05/2018

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

 DOI: 10.1038/s41598-018-26359-8

ISSN: 2045-2322

Proyecto español: FIS2013-45854-P

Url de la publicación: https://doi.org/10.1038/s41598-018-26359-8