期刊
SMALL
卷 4, 期 12, 页码 2292-2299出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.200800203
关键词
Bragg plasmons; Mie plasmons; nanophotonics; silver
类别
资金
- Commonwealth Scientific and Industrial Research Organisation (Australia)
- University of Technology Sydney
2D arrays of silver semi-shells of 100 and 200 nm diameter display complex reflection and transmission spectra in the visible and near-IR. Here these spectral,features are deconstructed and it is demonstrated that they result from the coupling of incident light into a delocalized Bragg plasmon, and the latter's induction of localized Mie plasmons in the arrays. These phenomena permit the excitation of transverse dipolar plasmon resonances in the semi-shells despite an ostensibly unfavorable orientation with respect to normally incident light. The resulting spectral feature in the mid-visible is strong and tunable.
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