Mixed-Resolution High-Q Sensor Based on Hybridized Spoof Localized Surface Plasmons

Wang, Jiangpeng; Zhang, Jingjing; Gao, Hao; Fu, Xiaojian; Bao, Dinghua; Cui, Tie Jun

doi:10.3389/fphy.2022.850186

Cited by 7 publications

(3 citation statements)

References 38 publications

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“…The Q-factors of the quasi-BICs can be calculated by equation ( 4), where 0 f is the resonance and 3dB f  represents the 3dB bandwidth of the resonance peak. [7] 0 3…”

Section: Design Of Slsp Structure Modelmentioning

confidence: 99%

Study on high-Q supercavity mode in spoof localized surface plasmon structures

Zou,

Li,

Zhang

2024

Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023)

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We report experimentally high-Q resonances arising from quasi-bound states in the continuum (quasi-BICs), supported by spoof localized surface plasmon (SLSP) structures with broken symmetry. The influence of structural asymmetric parameters on the Q-factors of SLSP resonance is studied with numerical simulations and experiments, and the supercavity mode with small spectral width is observed as the central displacement of the SLSP structure is approaching zero. Our investigation has demonstrated a new mechanism in suppressing the radiation loss of SLSP structures, holding promise for sensing applications with high sensitivity.

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“…The Q-factors of the quasi-BICs can be calculated by equation ( 4), where 0 f is the resonance and 3dB f  represents the 3dB bandwidth of the resonance peak. [7] 0 3…”

Section: Design Of Slsp Structure Modelmentioning

confidence: 99%

Study on high-Q supercavity mode in spoof localized surface plasmon structures

Zou,

Li,

Zhang

2024

Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023)

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“…Since proposed firstly by Pendry in 2012, the SLSP structure has undergone the process from bulk to planar implementation. [21][22][23][24][25][26][27][28] Owing to the flexibility of SLSP structures, the quality factor (Q factor) can be further enhanced by reconstructing structural parameters, improving the sensitivity. [22] In addition, when the relative dielectric constant around the SLSP resonance structure changes, the corresponding frequency shifts are useful for sensing and medical applications.…”

Section: Introductionmentioning

confidence: 99%

“…[22] In addition, when the relative dielectric constant around the SLSP resonance structure changes, the corresponding frequency shifts are useful for sensing and medical applications. [24] By integrating the SLSP resonator into the SSPP waveguide, the stop-band filter and the nonreciprocal isolator have been reported. [25,26] However, the above-proposed passive SLSP structures are mainly focused on minimizing structural size, analyzing resonance mode, and acting as the auxiliary framework.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Spoof Localized Surface Plasmonic for Frequency Detections

Gao

et al. 2023

Laser & Photonics Reviews

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Under the impetus of wireless communications, metamaterials have attracted considerable attention due to their superior merits of free manipulation of electromagnetic waves and easy integration. However, most efforts to date are mainly focused on the modulation of wave information or recognition of wave intensity, while the frequency detection is rarely explored. Here, a spoof localized surface plasmon (SLSP) structure is proposed to realize reconfigurable frequency detections. By switching the bias voltage applied to the varactor, the resonance frequency of SLSP can be controlled dynamically from 1.95 to 2.35 GHz. The SLSP‐based waveguide has a relatively high quality factor due to the strongly localized field confinement. Reconfigurable frequency detection is demonstrated experimentally by monitoring the output voltage of the introduced detector. The measured and simulated results are in good agreement. This work will hold promising applications in wireless communication and sensing systems.

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Terahertz high-Q magnetic dipole resonance induced by coherent Fano interactions

Yan

et al. 2022

Applied Physics Letters

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High Q-factor resonance holds great promise for bio-chemical sensing and enhanced light–matter interaction. However, terahertz (THz) magnetic resonances usually demonstrate low Q-factors, resulting in huge energy radiation loss particularly in high frequency bands. Here, we show that high Q-factor magnetic dipole resonance at THz frequencies can be achieved by exploiting the coherent Fano interactions with strong field enhancements in an array composed of single metallic split-ring resonators, working at Wood–Rayleigh anomalies. It can give rise to ultrahigh Q-factor beyond 104 in the THz regime. Experimentally, the measured Q-factor of dominant magnetic dipole resonance can achieve no less than a level of ∼261 by Lorentzian fitting to the experimental data. In addition, a high Q-factor of the fundamental-order magnetic dipole resonance is demonstrated beyond 30. High- Q magnetic dipole resonance is closely associated with ultralow-damping and negative permeability in the THz band. The measurements of magnetic dipole resonances are in good agreement with the theoretical analyses. Our scheme suggests a feasible route to suppress radiative loss for enhanced THz field-matter interaction.

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Mixed-Resolution High-Q Sensor Based on Hybridized Spoof Localized Surface Plasmons

Cited by 7 publications

References 38 publications

Study on high-Q supercavity mode in spoof localized surface plasmon structures

Study on high-Q supercavity mode in spoof localized surface plasmon structures

Reconfigurable Spoof Localized Surface Plasmonic for Frequency Detections

Terahertz high-Q magnetic dipole resonance induced by coherent Fano interactions

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