A high-sensitivity biosensor based on a metal–insulator–metal diamond resonator and application for biochemical and environment detections

Bahri, Hocine; Hocini, Abdesselam; Salah, Hocine Ben; Mouetsi, Souheil; Ingebrandt, Sven; Vivek, P.; Hamani, Malika

doi:10.1016/j.ijleo.2022.170083

Cited by 18 publications

(6 citation statements)

References 38 publications

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“…The light field changes mainly in the x-y plane. The thickness of the z-direction can be regarded as infinite compared to the x-and y-directions, and the field strength distribution in the z-direction is uniform [38,39]. The results obtained by two-dimensional simulation and three-dimensional simulation are the same.…”

Section: Generation Mechanism Of Fano Resonancementioning

confidence: 82%

Multiple Fano resonances by MIM waveguide coupling whispering gallery mode resonator and application in Refractive index sensing

Gao,

Wang,

Chen

et al. 2024

Phys. Scr.

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In this study, a baffled metal – insulator – metal (MIM) waveguide coupled with a whispering gallery mode resonator (WGMR) is proposed. This structure could excite quadruple Fano resonances. The asymmetric Fano resonance transmittance spectrum and the electric field at the resonance peak were numerically simulated using the finite difference time domain method. The obtained data were fitted using the multimode interference coupled mode theory. The number of Fano resonance peaks was tuned by the outer radius of the WGMR. With other geometric parameters unchanged, the number of Fano resonance peaks increased with increasing outer radius of the WGMR. When the ring width was fixed, the structure could excite multiple Fano resonances within a certain outer radius range. This structure was used for refractive index sensing and its sensitivity and figure of merit (FOM) were 3004 nm/RIU and 3.14× 104 in a gas environment, respectively. Therefore, the proposed structure can excite multiple Fano resonances and achieve a high sensitivity and FOM, providing a theoretical basis for micro and nano applications.

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Section: Generation Mechanism Of Fano Resonancementioning

confidence: 82%

Multiple Fano resonances by MIM waveguide coupling whispering gallery mode resonator and application in Refractive index sensing

Gao,

Wang,

Chen

et al. 2024

Phys. Scr.

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“…Here, x% and (100 − x)% represent the ratio of ethanol and chloroform, respectively. We calculate the permittivity of Ag using the Drude-Lorentz dispersion model [46].…”

Section: Methodsmentioning

confidence: 99%

Improving Temperature-Sensing Performance of Photonic Crystal Fiber via External Metal-Coated Trapezoidal-Shaped Surface

et al. 2023

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This article describes a photonic crystal fiber (PCF) temperature sensor that utilizes a flat, metal-coated trapezoidal surface. The PCF is made up of two layers of elliptical air holes and a polished trapezoidal surface that allows temperature sensing. An external sensing approach is used to deposit a thin silver layer on the reflective surface, while a thin SiO2 film acts as an oxidation-resistant coating. The top elliptical air hole serves as the interface for energy transformation from the core-guided mode to the surface plasmon-polariton (SPP) mode. Simulations carried out using the finite element method indicate that the proposed SPR-PCF temperature sensor can achieve a maximum temperature sensitivity and resolution of up to 5200 pm/°C and 0.01923 °C, respectively, across a temperature range of 10 to 60 °C. This research has significant potential for sensor design and real-time temperature remote sensing applications.

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“…Together with the oscillating charges, these radiation fields also pass through the metallic conductor. Both in theory and in practice, a wide range of SPP-based devices, including sensors [4], Plasmon-induced transparent (PIT) structures [5,6], Lasers [7], Logic circuits [8] and optical filters [9], were recently suggested and developed. Owing to their exceptional sensitivity towards any changes in refractive indices (RI) of the metal and dielectric stacks, SPP-based sensor concepts attract unprecedented attention for label-free, rapid [10,11] molecular detection of Glucose [12], Drugs [13], Proteins [14], DNA [15] as well as physical parameters such as temperature [16] for biomedical and environmental monitoring devices.…”

Section: Introductionmentioning

confidence: 99%

Wide spectrum multiple Fano resonances for high sensitivity detection of refractive index and temperature in MIM waveguides coupled with racetrack resonator nanorod-arrays

Bahri,

Bensalah,

Ingebrandt

et al. 2024

Preprint

Self Cite

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In this paper, we designed a metal-insulator-metal (MIM) waveguides based plasmonic sensor coupled with a racetrack cavity adorned with zero Dimensional (0D) nanorod-arrays exhibiting high sensitivity detection of refractive index variations measured as spectral shifts in the resonance wavelengths. The finite-difference time-domain method (FDTD) was used to simulate and study the optical platform based on MIM waveguide and nanorod-array racetrack resonator as a detection refractive index (RI) sensor and for temperature and Diabetes sensing, with sensitivity as high as 4250 nm per RIU and 0.42 nm/°C and 3204 nm/RIU, respectively. The nanorod arrays on the racetrack resonator enhance the light-matter interaction. Which increased the sensitivity. We evaluated the impacts of radius and refractive index on the racetrack resonator's sensitivity using the spectra shifts as sensor performance. As a result, the proposed plasmonic structures exhibit strong potential for a variety of sensor applications for offering high-sensitivity detection of low concentrations of small molecules similar to glucose and temperature.

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A high-sensitivity biosensor based on a metal–insulator–metal diamond resonator and application for biochemical and environment detections

Cited by 18 publications

References 38 publications

Multiple Fano resonances by MIM waveguide coupling whispering gallery mode resonator and application in Refractive index sensing

Multiple Fano resonances by MIM waveguide coupling whispering gallery mode resonator and application in Refractive index sensing

Improving Temperature-Sensing Performance of Photonic Crystal Fiber via External Metal-Coated Trapezoidal-Shaped Surface

Wide spectrum multiple Fano resonances for high sensitivity detection of refractive index and temperature in MIM waveguides coupled with racetrack resonator nanorod-arrays

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