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Article overview
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Invisible nanowires with interferencing electric and toroidal dipoles | Wei Liu
; Jianfa Zhang
; Bing Lei
; Haojun Hu
; Andrey E. Miroshnichenko
; | Date: |
8 Feb 2015 | Abstract: | By studying the scattering of normally incident planewaves by a single
nanowire, we reveal the indispensable role of toroidal multipole excitation in
multipole expansions of radiating sources. It is found that for both
p-polarized and s-polarized incident waves, toroidal dipoles can be effectively
excited within homogenous dielectric nanowires in the optical spectrum regime.
We further demonstrate that the plasmonic core-shell nanowires can be rendered
invisible through destructive interference of the electric and toroidal
dipoles, which may inspire many nanowire based light-matter interaction
studies, and incubate biological and medical applications that require
non-invasive detections and measurements. | Source: | arXiv, 1502.2205 | Services: | Forum | Review | PDF | Favorites |
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