Sub-wavelength optics articles within Nature Materials

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• Article | 22 June 2023

  Multiple and spectrally robust photonic magic angles in reconfigurable α-MoO₃ trilayers

  The direction of polariton canalization—its diffractionless propagation—in twisted bilayers at the magic angle is hindered by the lack of multiple magic angles. By controlling the twist angles between three α-MoO₃ layers, reconfigurable and spectrally robust polariton canalization along any in-plane direction is demonstrated.

  • J. Duan
  • , G. Álvarez-Pérez
  •  & P. Alonso-González

• Letter | 11 December 2017

  Ultralow-loss polaritons in isotopically pure boron nitride

  Isotopic enrichment in hexagonal boron nitride is shown to enhance the propagation properties of phonon polaritons, achieving a threefold enhancement in their lifetime.

  • Alexander J. Giles
  • , Siyuan Dai
  •  & Joshua D. Caldwell