Robust tunable plasmon induced transparency in coupled-resonance finite array of metasurface nanostructure

Liu, Jietao; Li, Zhi

doi:10.1038/s41598-020-78795-0

Cited by 2 publications

(2 citation statements)

References 29 publications

(18 reference statements)

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“…For instance, plasmonic waveguide coupled resonators, metamaterials, and metasurface structures have all been shown. [125][126][127] The majority of these devices are made of metallic materials, and it is almost hard to control the material's dielectric function and loss. Due to the metal's limited surface plasmons, modulation performance is exceedingly low.…”

Section: Plasmonics In CD 3 Asmentioning

confidence: 99%

“…Recently, researchers presented a range of devices capable of producing the PIT effect. For instance, plasmonic waveguide coupled resonators, metamaterials, and metasurface structures have all been shown 125 – 127 The majority of these devices are made of metallic materials, and it is almost hard to control the material’s dielectric function and loss.…”

Section: Photonics With 3d Dsm Cd3as2mentioning

confidence: 99%

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Recent advances in photonics of three-dimensional Dirac semimetal Cd3As2

et al. 2022

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Due to their unusual features in condensed matter physics and their applicability in optical and optoelectronic applications, three-dimensional Dirac semimetals (3D DSMs) have garnered substantial interest in recent years. In contrast to monolayer graphene, 3D DSM exhibits linear band dispersion despite its macroscopic thickness. Therefore, being a bulk material, it is easy to make nanostructures with 3D DSM, just as one normally does with metals such as gold and silver. Among 3D DSMs, cadmium arsenide (Cd 3 As 2 ) is quite famous and considered an excellent 3D DSM due to its chemical stability in air and extraordinary optical response. In this review, advances in 3D DSM Cd 3 As 2 fabrication techniques and recent progress in the photonics of 3D DSM Cd 3 As 2 are given and briefly reviewed. Various photonic features, including linear and nonlinear plasmonics, optical absorption, optical harmonic generation, and ultrafast dynamics, have been explored in detail. It is expected that Cd 3 As 2 would share an excellent tunable photonic response like graphene. We envision that this article may serve as a concise overview of the recent progress of photonics in 3D DSM Cd 3 As 2 and provides a compact reference for young researchers.

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Section: Plasmonics In CD 3 Asmentioning

confidence: 99%

Section: Photonics With 3d Dsm Cd3as2mentioning

confidence: 99%

Recent advances in photonics of three-dimensional Dirac semimetal Cd3As2

et al. 2022

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Plasmonic coupling effect of annealed gold nanoarrays

Singh,

Fuhrmann,

Syrowatka

et al. 2024

Phys. Scr.

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Periodic metal nanodisc arrays have the potential to exhibit regularly spaced large local field enhancements, especially when high-Q collective plasmonic grating resonances can be obtained. Here we demonstrate how Laser interference lithography (LIL) as a maskless and high throughput technique can be used to fabricate these on square centimeter areas. The drawback of LIL is the rather fixed ratio of the size of the individual nanostructure (d) to the period of the array (p) of about d/p ∼ 0.5 for the setup used in the current article, thereby, limiting its ability to create resonances with ultra-high quality factors (Q-factors). To improve the Q-factor of the resonances of the arrays, we study the effect of thermal annealing nanodisk arrays fabricated by LIL and a lift off process. The nanodisk arrays with periods of 400 nm and 500 nm exhibited a plasmonic resonance, which was caused by the interaction of the single disk resonance and a (1 0) grating resonance. Annealing for a short duration lowered the d/p ratio from 0.5 to 0.4, and led to smoothening of the disk surfaces and growth of gold grains, resulting in lower ohmic and radiative losses and doubling of the Q-factor of the resonances. Finite element method (FEM) simulations were used to monitor this improvement in material parameters. Annealing for a longer duration disintegrated the nanodisk into several smaller particles while maintaining the overall periodicity of the array. While the plasmonic resonances of the experimentally investigated fragmented disks were basically destroyed, simulation predict that for larger periods fragmented nanodisk arrays (keeping the d/p ∼ 0.4) can exhibit extremely strong and sharp resonances whose Q-factor increases more than 58.4 times compared to the unfragmented discs. In addition, simulations show a massive enhancement of the local electric field promising immense potential for surface enhanced Raman sensing.

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Robust tunable plasmon induced transparency in coupled-resonance finite array of metasurface nanostructure

Cited by 2 publications

References 29 publications

Recent advances in photonics of three-dimensional Dirac semimetal Cd3As2

Recent advances in photonics of three-dimensional Dirac semimetal Cd3As2

Plasmonic coupling effect of annealed gold nanoarrays

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