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Reconfigurable infrared hyperbolic metasurfaces using phase change materials

Author

Listed:
  • T. G. Folland

    (Vanderbilt University)

  • A. Fali

    (University of Georgia)

  • S. T. White

    (Vanderbilt University)

  • J. R. Matson

    (Vanderbilt University)

  • S. Liu

    (Kansas State University)

  • N. A. Aghamiri

    (University of Georgia)

  • J. H. Edgar

    (Kansas State University)

  • R. F. Haglund

    (Vanderbilt University
    Vanderbilt University)

  • Y. Abate

    (University of Georgia)

  • J. D. Caldwell

    (Vanderbilt University)

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 show that this system supports in-plane HPhP refraction, thus providing a prototype for a class of planar refractive optics. This approach offers reconfigurable control of in-plane HPhP propagation and exemplifies a generalizable framework based on combining hyperbolic media and PCMs to design optical functionality.

Suggested Citation

  • T. G. Folland & A. Fali & S. T. White & J. R. Matson & S. Liu & N. A. Aghamiri & J. H. Edgar & R. F. Haglund & Y. Abate & J. D. Caldwell, 2018. "Reconfigurable infrared hyperbolic metasurfaces using phase change materials," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06858-y
    DOI: 10.1038/s41467-018-06858-y
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    Cited by:

    1. Neda Alsadat Aghamiri & Guangwei Hu & Alireza Fali & Zhen Zhang & Jiahan Li & Sivacarendran Balendhran & Sumeet Walia & Sharath Sriram & James H. Edgar & Shriram Ramanathan & Andrea Alù & Yohannes Aba, 2022. "Reconfigurable hyperbolic polaritonics with correlated oxide metasurfaces," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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