Nature Communications (Jul 2020)

Collective near-field coupling and nonlocal phenomena in infrared-phononic metasurfaces for nano-light canalization

  • Peining Li,
  • Guangwei Hu,
  • Irene Dolado,
  • Mykhailo Tymchenko,
  • Cheng-Wei Qiu,
  • Francisco Javier Alfaro-Mozaz,
  • Fèlix Casanova,
  • Luis E. Hueso,
  • Song Liu,
  • James H. Edgar,
  • Saül Vélez,
  • Andrea Alu,
  • Rainer Hillenbrand

DOI
https://doi.org/10.1038/s41467-020-17425-9
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 8

Abstract

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Phenomena such as polariton canalization and hyperlensing can be found at the transition from hyperbolic to elliptical dispersion. Here, the authors investigate this transition using hyperspectral infrared nanoimaging of polaritons in a grating of hexagonal boron nitride nanoribbons.