All-dielectric reciprocal bianisotropic nanoparticles

The study of high-index dielectric nanoparticles currently attracts a lot of attention. They do not suffer from absorption but promise to provide control of the properties of light comparable to plasmonic nanoparticles. To further advance the field, it is important to identify versatile dielectric nanoparticles with unconventional properties. Here, we show that breaking the symmetry of an all-dielectric nanoparticle leads to a geometrically tunable magnetoelectric coupling, i.e., an omega-type bianisotropy. The suggested nanoparticle exhibits different backscatterings and, as an interesting consequence, different optical scattering forces for opposite illumination directions. An array of such nanoparticles provides different reflection phases when illuminated from opposite directions. With a proper geometrical tuning, this bianisotropic nanoparticle is capable of providing a 2π phase change in the reflection spectrum while possessing a rather large and constant amplitude. This allows the creation of reflectarrays with near-perfect transmission out of the resonance band due to the absence of a usually employed metallic screen.

DOI

10.1103/PhysRevB.92.245130

Citation

Alaee, R, Albooyeh, M, Rahimzadegan, A, Mirmoosa, M S, Kivshar, Y S & Rockstuhl, C 2015, ' All-dielectric reciprocal bianisotropic nanoparticles ', Physical Review B, vol. 92, no. 24, 245130, pp. 1-6 . https://doi.org/10.1103/PhysRevB.92.245130

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201808084484

Collections

[article-cris] Sähkötekniikan korkeakoulu / ELEC

Show all metadata

All-dielectric reciprocal bianisotropic nanoparticles

Access rights

URL

Journal Title

Journal ISSN

Volume Title

Authors

Date

Department

Major/Subject

Mcode

Degree programme

Language

Pages

Series

Abstract

Description

Keywords

Other note

DOI

Citation

Permanent link to this item

Collections