Extraordinary Optical Transmission in Metallic Nanostructures with a Plasmonic Nanohole Array of Two Connected Slot Antennas

Hu, Ying; Liu, Gui-qiang; Liu, Zhengqi; Liu, Xiaoshan; Zhang, Xiang-nan; Cai, Zhengjie; Liu, Mulin; Gao, Huogui; Gu, Grace X.

doi:10.1007/s11468-014-9831-z

Cited by 16 publications

(6 citation statements)

References 42 publications

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“…In this research, we calculate the graphene nanoring-strip spectral responses using the FDTD method. We use FDTD method with the software FDTD Solutions to calculate transmission spectra and electric field distributions [36,37]. In the whole calculation process, the periodic boundary conditions in the y and x directions are adopted, respectively.…”

Section: Methodsmentioning

confidence: 99%

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

Cen

Lin

Huang

et al. 2018

Sensors

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In the present study, we design a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays. The calculations prove that the nanoring-strip have two transmission dips. By changing the strip length L of the present structure, we find that the nanoring-strip graphene arrays have a wide range of resonances (resonance wavelength increases from 17.73 μm to 28.15 μm). When changing the sensing medium refractive index nmed, the sensitivity of mode A and B can reach 2.97 μm/RIU and 5.20 μm/RIU. By changing the doping level ng, we notice that the transmission characteristics can be tuned flexibly. Finally, the proposed sensor also shows good angle tolerance for both transverse magnetic (TM) and transverse electric (TE) polarizations. The proposed nanoring-strip graphene arrays along with the numerical results could open a new avenue to realize various tunable plasmon devices and have a great application prospect in biosensing, detection, and imaging.

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Section: Methodsmentioning

confidence: 99%

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

Cen

Lin

Huang

et al. 2018

Sensors

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“…Therefore, the minimal gap size in all the suggested structures was presumed to be 5 nm to have a topology that could be easily lifted in the fabrication process. It is a prevalent method that uses 5 nm, and even less than 5 nm gap and thickness use from 50nm to 20nm to construct plasmonic devices [28,[30][31][32][33][34][35][36][37]. The design of plasmonic filters included two linked resonators with 5 nm of coupling space [30].…”

Section:   mentioning

confidence: 99%

A theoretical study of broadband extraordinary optical transmission in gold plasmonic square nanohole arrays and its application on refractive index sensor

et al. 2022

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Extraordinary optical transmission (EOT) behaviour is investigated in a subwavelength plasmonic nanostructure, consisting of a gold film perforated with a square nanohole array and deposited on a silicon dioxide substrate. The essential aspect of the proposed structure is the periodic disorder that enables broadband transmission peaks in the visible and near-infrared region and reduces the structure's size, which mainly arises from the excitation of localized surface plasmon resonances (LSPRs). Optical cavity modes formed in the nanoholes and the hybridization of plasmon modes. Further, the performance of the proposed nanostructure as a plasmonic sensor is analyzed by increasing the index of refraction of the local environment; the EOT exhibit remarkable refractive index sensitivity of up to 944 nm/RIU, a figure of merit of 9.25 and a contrast ratio of 47% are realized. The proposed structure has some practical significance for designing low-cost and effective sensing devices.

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“…[4][5][6][7][8][9][10] It was also found that a reasonable MTM unit cell or coupled MTM pair can be used to achieve enhanced transmission (ET) of EM wave through a sub-wavelength aperture on a metal plate. [11][12][13][14][15] According to Bethe's theory, the proportion of EM wave transmitting through a sub-wavelength hole on a metal plate was limit, when the radius of the hole was much smaller than the interested wave length. [16] However, Ebbesen's research broke through this restriction.…”

Section: Introductionmentioning

confidence: 99%

Topology optimization method of metamaterials design for efficient enhanced transmission through arbitrary-shaped sub-wavelength aperture*

Shi¹,

Cao²,

Zhao³

et al. 2021

Chinese Phys. B

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The electromagnetic wave enhanced transmission (ET) through the sub-wavelength aperture was an unconventional physical phenomenon with great application potential. It was important to find a general design method which can realize efficient ET for arbitrary-shaped apertures. For achieving ET with maximum efficiency at specific frequency through arbitrary-shaped subwavelength aperture, a topology optimization method for designing metamaterials (MTM) microstructure was proposed in this study. The MTM was employed and inserted vertically in the aperture. The description function for the arbitrary shape of the aperture was established. The optimization model was founded to search the optimal MTM microstructure for maximum enhanced power transmission through the aperture at the demanded frequency. Several MTM microstructures for ET through the apertures with different shapes at the demanded frequency were designed as examples. The simulation and experimental results validate the feasibility of the method. The regularity of the optimal ET microstructures and their advantages over the existing configurations were discussed.

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Extraordinary Optical Transmission in Metallic Nanostructures with a Plasmonic Nanohole Array of Two Connected Slot Antennas

Cited by 16 publications

References 42 publications

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

A theoretical study of broadband extraordinary optical transmission in gold plasmonic square nanohole arrays and its application on refractive index sensor

Topology optimization method of metamaterials design for efficient enhanced transmission through arbitrary-shaped sub-wavelength aperture*

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