Plasmonic nanoclocks.

Liu, Hailong; Wang, Zilong; Huang, Jian; Liu, Yan Jun; Fan, Hong Jin; Zheludev, Nikolay I; Soci, Cesare · Nano Lett · 2014

basic_science · Level V

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Abstract

Plasmonic spectra of "nanoclock" metamaterials can be topologically mapped on a torus. We manufactured arrays of such a metamaterial with different "time" shown on the clocks and demonstrated that the near-infrared spectra of the nanostructures can be predictably tuned exhibiting a rich series of high-order plasmon modes, from the electric dipole to exotic electric triakontadipole that could be engaged in chemo/biosensor applications.