Plasmonic Refractive Index Sensor Based on Ring-Type Pentagonal Resonator with High Sensitivity

Mahmud, Rabiul Al; Faruque, Md. Omar; Sagor, Rakibul Hasan

doi:10.1007/s11468-020-01357-7

Cited by 33 publications

(10 citation statements)

References 24 publications

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“…Therefore, the deformation of the upper horizontal slot will reduce the air space in the horizontal slot and increase the pressure in its space (see Figure 1b). By raising d, λres undergoes a redshift since the lessening horizontal slot's volume enhances the CPR effect, which results in good agreement with Equations ( 4)- (7). Therefore, it can expect that λres redshifts with the increase in d, the resonant wavelength moves toward a more extended wavelength region.…”

Section: Resultssupporting

confidence: 76%

“…The designed structure displays the most heightened sensitivity (≈23.32 times) than compared to [50] to the best of our knowledge. In addition, the pressure (in the unit of Pa) applied to the designed sensor can be calculated based on the Equations ( 5) and (7). For example, when the parameters of (w, g, N, P, L, h) = (50 nm, 10 nm, 97, 100 nm, 650 nm, 100 nm), the measurable minimum pressures are about 8.404 Pa, 8.410 Pa, and 8.406 Pa for modes 1, 2 and 3, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, surface plasmon polaritons (SPPs) are electromagnetic (EM) waves traveling along the dielectric-metal border and forming collective oscillations of electrons and photons at resonant wavelengths [1][2][3][4][5][6][7][8][9]. SPPs can facilitate light-matter interaction between dielectric medium and metal nanoparticles (MNPs) since they can configure light into the nanometer domain and overcome the diffraction limit [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Ultrahigh Sensitivity of a Plasmonic Pressure Sensor with a Compact Size

et al. 2021

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This study proposes a compact plasmonic metal-insulator-metal pressure sensor comprising a bus waveguide and a resonator, including one horizontal slot and several stubs. We calculate the transmittance spectrum and the electromagnetic field distribution using the finite element method. When the resonator’s top layer undergoes pressure, the resonance wavelength redshifts with increasing deformation, and their relation is nearly linear. The designed pressure sensor possesses the merits of ultrahigh sensitivity, multiple modes, and a simple structure. The maximum sensitivity and resonance wavelength shift can achieve 592.44 nm/MPa and 364 nm, respectively, which are the highest values to our knowledge. The obtained sensitivity shows 23.32 times compared to the highest one reported in the literature. The modeled design paves a promising path for applications in the nanophotonic field.

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Section: Resultssupporting

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultrahigh Sensitivity of a Plasmonic Pressure Sensor with a Compact Size

et al. 2021

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“…Plasmonic sensors based on MIM-cavity waveguide configuration are commonly used for refractive index sensing since their feedback feature is a small variation in the surrounding material 32 , 33 . Many MIM-cavity designs based on SPPs to improve the sensing performance have been proposed 27 , 34 – 37 .…”

Section: Introductionmentioning

confidence: 99%

Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

Chau

Ming

Chao

et al. 2021

Sci Rep

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Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal–insulator-metal bus waveguide. The finite element method can analyze the structure's transmittance properties and electromagnetic field distributions in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained a relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU, and 56.35, respectively. Thus, the plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. Furthermore, the designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil, and glucose solution).

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“…Plasmonic sensors based on MIM-cavity waveguide configuration are commonly used for refractive index sensing since their feedback feature is a small variation in the surrounding material [32,33]. Many MIMcavity designs based on SPPs to improve the sensing performance have been proposed [27,[34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Significantly Enhanced Coupling Effect and Gap Plasmon Resonance in a MIM-cavity based Sensing Structure

Chau

Ming

Chao

et al. 2021

Preprint

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Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal-insulator-metal bus waveguide. The finite element method is used to analyze the transmittance properties and electromagnetic field distributions of the structure in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU and 56.35, respectively. The achieved plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. The designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil and glucose solution).

show abstract

Plasmonic Refractive Index Sensor Based on Ring-Type Pentagonal Resonator with High Sensitivity

Cited by 33 publications

References 24 publications

Ultrahigh Sensitivity of a Plasmonic Pressure Sensor with a Compact Size

Ultrahigh Sensitivity of a Plasmonic Pressure Sensor with a Compact Size

Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

Significantly Enhanced Coupling Effect and Gap Plasmon Resonance in a MIM-cavity based Sensing Structure

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