Scattering suppression in epsilon-near-zero plasmonic fractal shells

Vashista C. de Silva, Piotr Nyga, Vladimir P. Drachev

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Significant extinction from the visible to mid-infrared makes fractal shells very attractive as aerosolized obscurants. In contrast to the planar fractal films, where the absorption and reflection equally contribute to the extinction, the shells' extinction is caused mainly by the absorption. The Mie scattering resonance at 560 nm of a silica core with 780 nm diameter is suppressed by 75% and only partially substituted by the absorption in the shell so that the total transmission is noticeably increased. The silica vibrational stretching band at 9 μm in absorption also disappears. Effective medium theory supports our experiments and indicates that light goes mostly through the epsilon-near-zero shell with approximately wavelength independent absorption rate.

Original languageEnglish
Pages (from-to)2491-2500
Number of pages10
JournalOptical Materials Express
Volume5
Issue number11
DOIs
Publication statusPublished - 2015
Externally publishedYes

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