Continuously Tunable Optical Modulation Using Vanadium Dioxide Huygens Metasurfaces

Oguntoye, Isaac O.; Padmanabha, Siddharth; Hinkle, Max; Koutsougeras, Thalia; Ollanik, Adam J.; Escarra, Matthew D.

doi:10.1021/acsami.3c08493

Cited by 9 publications

(1 citation statement)

References 51 publications

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“…The significant change of optical properties of VO 2 between states cross critical temperature of phase transition suggests this material is an ideal material candidate. However, the extinction coefficient of VO 2 in visible-toinfrared band normally increases after transition to metallic state [20]. Therefore, the absorptivity of VO 2 must be engineered for the purpose of temperature self-regulation.…”

Section: Introductionmentioning

confidence: 99%

Optimized design of nano-photonic devices for temperature self-regulating on vanadium dioxide thin films

Lin,

Wu,

Wang

et al. 2023

J. Opt.

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Phase change materials can enable temperature self-regulation due to their drastic changes in optical properties accompanying the phase transition. Significant reduction of the optical absorption after the transition is the key ingredient for an enhanced regulating performance. However, the absorptivity of unpatterned vanadium dioxide (VO2) thin films can hardly be reduced after phase transition at visual-to-infrared band. In this work, we combine the direct binary search (DBS) and particle swarm optimization (PSO) algorithms for an optimized design of temperature self-regulating nano-photonic devices on VO2 thin films. For a given incident wavelength, a pixelated structure is firstly inverse-designed by the DBS algorithm which maximizes the absorption contrast before and after the transition. To overcome fabrication challenges as pixel size is at deep sub-wavelength scale, the pixelated structure can then be replaced by geometric shapes which are more tractable in manufacturing processes. The geometrical parameters are optimized by the PSO algorithm where our optimized device brings the absorptivity down to 33% after the transition. These results provide an effective way for the inverse design of optimized nano-photonic structures based on phase change materials.

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Section: Introductionmentioning

confidence: 99%

Optimized design of nano-photonic devices for temperature self-regulating on vanadium dioxide thin films

Lin,

Wu,

Wang

et al. 2023

J. Opt.

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A universal chemical approach to the growth of self-assembled vanadium dioxide nanostructures

Ivanov,

Makarevich,

Gavdush

et al. 2024

Ceramics International

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Refractiveindex.info database of optical constants

Polyanskiy

2024

Sci Data

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We introduce the refractiveindex.info database, a comprehensive open-source repository containing optical constants for a wide array of materials, and describe in detail the underlying dataset. This collection, derived from a meticulous compilation of data sourced from peer-reviewed publications, manufacturers’ datasheets, and authoritative texts, aims to advance research in optics and photonics. The data is stored using a YAML-based format, ensuring integrity, consistency, and ease of access. Each record is accompanied by detailed metadata, facilitating a comprehensive understanding and efficient utilization of the data. In this descriptor, we outline the data curation protocols and the file format used for data records, and briefly demonstrate how the data can be organized in a user-friendly fashion akin to the books in a traditional library.

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Continuously Tunable Optical Modulation Using Vanadium Dioxide Huygens Metasurfaces

Cited by 9 publications

References 51 publications

Optimized design of nano-photonic devices for temperature self-regulating on vanadium dioxide thin films

Optimized design of nano-photonic devices for temperature self-regulating on vanadium dioxide thin films

A universal chemical approach to the growth of self-assembled vanadium dioxide nanostructures

Refractiveindex.info database of optical constants

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