Looking into meta-atoms of plasmonic nanowire metamaterial

Kuntong Tsai, Grégory A. Wurtz, Jenyou Chu, Tianyou Cheng, Huaihsien Wang, Alexey V. Krasavin, Jr-Hau He, Brian M. Wells, Viktor A. Podolskiy, Juenkai Wang, Yuh-Lin Wang, Anatoly V. Zayats

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

Nanowire-based plasmonic metamaterials exhibit many intriguing properties related to the hyperbolic dispersion, negative refraction, epsilon-near-zero behavior, strong Purcell effect, and nonlinearities. We have experimentally and numerically studied the electromagnetic modes of individual nanowires (meta-atoms) forming the metamaterial. High-resolution, scattering-type near-field optical microscopy has been used to visualize the intensity and phase of the modes. Numerical and analytical modeling of the mode structure is in agreement with the experimental observations and indicates the presence of the nonlocal response associated with cylindrical surface plasmons of nanowires.
Original languageEnglish (US)
Pages (from-to)4971-4976
Number of pages6
JournalNano Letters
Volume14
Issue number9
DOIs
StatePublished - Aug 26 2014

ASJC Scopus subject areas

  • Bioengineering
  • Materials Science(all)
  • Chemistry(all)
  • Mechanical Engineering
  • Condensed Matter Physics

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