Active manipulation of toroidal resonance in hybrid metal-vanadium dioxide metamaterial

Shu, Chang; Zhang, Chen; Yulong, Ye; Lin, Tongqing

doi:10.1016/j.rinp.2021.105146

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…This phase change leads to a reversible transition of infrared light from transmission to reflection. VO2 can undergo remarkable changes in its electromagnetic characteristics and can also be applied to the design of tunable THz devices 32 . In this context, this study proposes a metamaterial structure consisting of a C-shaped ring and a resonator similar to the inverted h-shaped resonator (hereafter referred to as the h-shaped resonator).…”

Section: Introductionmentioning

confidence: 99%

“…VO 2 can undergo remarkable changes in its electromagnetic characteristics and can also be applied to the design of tunable THz devices. 32 In this context, this study proposes a metamaterial structure consisting of a C-shaped ring and a resonator similar to the inverted h-shaped resonator (hereafter referred to as the h-shaped resonator). For y-polarized electromagnetic waves, the EIT effect and EIR effect in metamaterial at THz frequency band can be achieved.…”

Section: Introductionmentioning

confidence: 99%

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Tunable terahertz metamaterial based on vanadium dioxide for electromagnetically induced transparency and reflection

et al. 2023

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To realize the electromagnetically induced transparency (EIT) or reflection (EIR) effect in the terahertz band, many metamaterial structures have been proposed. However, these structures usually have a single function of EIT effect or EIR effect, and it is a major challenge for a metamaterial structure to perform multiple functions. In this study, a switchable multifunctional hybrid metamaterial is proposed, which realizes the combined function of tunable EIT effect and EIR effect at THz regions through the integration of vanadium dioxide (VO 2 ) and metal metamaterial. Moreover, by changing the conductivity of VO 2 , the intensity modulations of EIT window and EIR window reach 36.11% and 50.59%, respectively. The surface current distribution and electric field responses are used to analyze the physical mechanisms of the EIT effect and the EIR effect. In addition, the active tuning mechanism of the metamaterial is theoretically explored based on the "two-particle" model. The designed hybrid metamaterial provides a simple approach to realize tunable EIT effect and EIR effect in THz metamaterials. This work opens up a possible way to achieve switchable functions (EIT or EIR) in a single device, which may find potential applications in optical switches, sensing, filtering, and slow light devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable terahertz metamaterial based on vanadium dioxide for electromagnetically induced transparency and reflection

et al. 2023

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Active Control of Bound States in the Continuum in Toroidal Metasurfaces

Kovalev,

Miroshnichenko,

Basharin

et al. 2024

Advanced Photonics Research

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The remarkable properties of toroidal metasurfaces, featuring ultrahigh‐Q bound states in the continuum (BIC) resonances and nonradiating anapole modes, have garnered significant attention. The active manipulation of quasi‐BIC resonance characteristics offers substantial potential for advancing tunable metasurfaces. This study explores explicitly the application of vanadium dioxide, a phase change material widely used in active photonics and room‐temperature bolometric detectors, to control quasi‐BIC resonances in toroidal metasurfaces. The phase change transition of vanadium dioxide occurs in a narrow temperature range, providing a large variation in material resistivity. Through heating thin film patches of vanadium dioxide integrated into a metasurface comprising gold split‐ring resonators on a sapphire substrate, remarkable control over the amplitude and frequency of quasi‐BIC resonances is achieved due to their high sensitivity to losses present in the system. Breaking the symmetry of meta‐atoms reveals enhanced tunability. The predicted maximum change in the quasi‐BIC resonance amplitude reaches 14 dB with a temperature variation of ≈10 °C.

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Reflective-to-absorptive THz switchable bifunctionality through phase transition of vanadium dioxide in a 1D defective photonic crystal microcavity

Rashidi

2023

J Comput Electron

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Active manipulation of toroidal resonance in hybrid metal-vanadium dioxide metamaterial

Cited by 5 publications

References 43 publications

Tunable terahertz metamaterial based on vanadium dioxide for electromagnetically induced transparency and reflection

Tunable terahertz metamaterial based on vanadium dioxide for electromagnetically induced transparency and reflection

Active Control of Bound States in the Continuum in Toroidal Metasurfaces

Reflective-to-absorptive THz switchable bifunctionality through phase transition of vanadium dioxide in a 1D defective photonic crystal microcavity

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