Plasmonic response of nanoscale spirals.
basic_science · Level V
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- Record sourced from PubMed, PMID 20698614.
- Also identified by DOI 10.1021/nl101475n.
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Abstract
The Archimedean spiral geometry presents a platform for exploration of complex plasmonic mechanisms and applications. Here we show both through simulations and experiment that more complex plasmonic modes with unique near-field structure and larger mode volumes can be realized within a single, topologically robust structure. In the spiral, complex polarization response, resonant interactions and symmetry-breaking features are defined by the width and spacing of the spiral tracks and by the winding number of the spiral.