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Updated: Feb 13, 2026

Fabricating Metamaterials Using the Fiber Drawing Method
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VO2 as a natural optical metamaterial.

Miller Eaton, Alessandra Catellani, Arrigo Calzolari

    Optics Express
    |March 14, 2018
    PubMed
    Summary

    Vanadium dioxide (VO2) phase change materials can create natural optical metamaterials. Adjusting the ratio of metallic to insulating VO2 enables tunable optical properties for THz-visible applications.

    Area of Science:

    • Materials Science
    • Condensed Matter Physics
    • Optics

    Background:

    • Vanadium dioxide (VO2) exhibits unique phase change properties and anisotropic electronic behavior.
    • Recent advancements allow for the creation of VO2 samples with co-existing metallic and insulating phases, forming intrinsic metal-insulator junctions.

    Purpose of the Study:

    • To investigate the optical properties of metallic and semiconducting VO2 using first-principles calculations.
    • To explore the design of self-contained natural optical metamaterials based on VO2.
    • To predict the potential for creating ordered VO2 junctions as hyperbolic metamaterials.

    Main Methods:

    • First-principles calculations were employed to analyze the optical properties of metallic and semiconducting VO2.
    • The study complements experimental findings on reflectance and metallicity changes in disordered and planar VO2 compounds.

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    Main Results:

    • The optical properties of metallic and semiconducting VO2 were analyzed, revealing potential for natural optical metamaterials.
    • A significant change in reflectance and metallicity was observed for both disordered and planar VO2 compounds.
    • Ordered VO2 junctions are predicted to function as efficient hyperbolic metamaterials across the THz-visible spectrum by tuning the phase ratio.

    Conclusions:

    • VO2-based natural optical metamaterials can be designed without external dielectric media.
    • Tunable hyperbolic metamaterial properties are achievable in the THz-visible range by controlling the metallic and insulating VO2 content.
    • The excitation of propagating volume plasmon polaritons in these VO2 metamaterials is a potential application.