Journal
ACS NANO
Volume 4, Issue 3, Pages 1457-1464Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901519p
Keywords
semishell; nanoshell; plasmon; finite difference time domain; poly(dimethylsiloxane); antibonding mode
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Funding
- FWO of Flanders
- Flemish Government
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The symmetry-broken geometry and variation of metal composition of semishells induce new plasmonic properties. A system of separated metallic semishells embedded in a poly(dimethylsiloxane) polymer film provides an ideal platform to investigate the localized surface plasmon resonance modes of semishells. We demonstrate experimentally that silver, gold, copper, and aluminum semishells can offer distinct plasmonic responses due to the wide range of their material parameters. Numerical calculations combined with the plasmon hybridization theory render us a clear understanding and assignment of the plasmonic modes of the semishells.
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