Reconfigurable infrared hyperbolic metasurfaces using phase change materials.

ABSTRACT: Metasurfaces control light propagation at the nanoscale for applications in both free-space and surface-confined geometries. However, dynamically changing the properties of metasurfaces can be a major challenge. Here we demonstrate a reconfigurable hyperbolic metasurface comprised of a heterostructure of isotopically enriched hexagonal boron nitride (hBN) in direct contact with the phase-change material (PCM) single-crystal vanadium dioxide (VO₂). Metallic and dielectric domains in VO₂ provide spatially localized changes in the local dielectric environment, enabling launching, reflection, and transmission of hyperbolic phonon polaritons (HPhPs) at the PCM domain boundaries, and tuning the wavelength of HPhPs propagating in hBN over these domains by a factor of 1.6. We

SUBMITTER: Folland TG 

PROVIDER: S-EPMC6197242 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature