Highly sensitive refractive index sensor based on SPR with silver and titanium dioxide coating

Yang, Haiming; Wang, Guangyao; Lü, Ying; Yao, Jianquan

doi:10.1007/s11082-021-02981-1

Cited by 31 publications

(10 citation statements)

References 34 publications

(28 reference statements)

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“…Similarly, confinement loss is a crucial parameter for the FM-MCF LSPR sensor, which expresses the excitation of the LSPR. Confinement loss is mainly determined by the imaginary part of the core mode effective RI (Im(neff)) and it can be calculated by (Yang et al, 2021)…”

Section: Preparation Sensing Model and Simulationmentioning

confidence: 99%

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Nanoparticle-Based FM-MCF LSPR Biosensor With Open Air-Hole

et al. 2021

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A nanoparticle-based few-mode multi-core fiber (FM-MCF) localized surface plasmon resonance (LSPR) biosensor is proposed and analyzed using the finite element method (FEM). It’s critical to narrow the loss spectrum and improve the coupling efficiency, which makes it have high resolution and high sensitivity. With the aid of open air holes, the gold nanoparticles are easily assembled on the surface of this FM-MCF LSPR biosensor. Through multiple investigations, the performance of the sensor can be improved by properly setting gold nanoparticle configurations, such as radius, positions, shapes, and nanoparticle arrays. The simulation results show that when three circular gold nanoparticles with a radius of 150 nm are placed symmetrically in the open air hole and the angle between adjacent nanoparticles is 5°, the maximum sensitivity of 7,351.6 nm/RIU (LP02y mode na = 1.38) can be obtained in the sensing range of 1.33–1.38, which covers the refractive index (RI) of biological fluids, such as bovine serum albumin (BSA) solution and human Immunoglobulin G.

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Section: Preparation Sensing Model and Simulationmentioning

confidence: 99%

“…Sensitivity is an important parameter to measure sensor performance. Spectral sensitivity is described as (Yang et al, 2021)…”

Section: Preparation Sensing Model and Simulationmentioning

confidence: 99%

Nanoparticle-Based FM-MCF LSPR Biosensor With Open Air-Hole

et al. 2021

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“…These excellent characteristics have greatly promoted the evolution and development of photonic crystal bers. With these excellent properties, photonic crystal bers have been widely applied to Strain [4], refractive index (RI) sensing [5][6][7][8], and temperature [9,10]. Filling PCF with temperature-sensitive materials to achieve PCF temperature sensing.…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity temperature sensor based on photonic crystal fiber filled with ethanol and toluene

Ruan

et al. 2023

Preprint

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A surface plasmon resonance photonic crystal fiber-based highly sensitive temperature sensor is proposed. The surface plasmon resonance is induced by injecting toluene into the central hole and ethanol into the side holes coated with gold film. The coupling mechanism and sensing performance of the proposed sensor are analyzed. The results indicate that in the sensing range of 0°C - 70 °C, the highest Figure of Merit (FOM) is 0.1169/°Cand the average temperature sensitivity can reach 7.13 nm/°C. The sensor's sensitivity is also very consistent across the entire detection range. Such temperature sensor exhibits tremendous potential in the domain of temperature detection.

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“…A metal-dielectric interface is the simplest structure in which surface plasmons can be excited. [7,8] Additionally, there are biosensors that utilize the inelastic scattering of matter molecules and optical radiation, a phenomenon that is called Raman effect. The scattering is always accompanied by a substantial shift in the radiation frequency.…”

mentioning

confidence: 99%

Detection of SARS‐CoV‐2 Virus Concentration Using a Simple Structure of Binary Photonic Crystal Sensor

Taya

Daher

Almawgani

et al. 2023

Physica Status Solidi (a)

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The scientific community works hard on developing reliable, rapid, highly sensitive and low‐cost techniques to detect SARS‐CoV‐2. The current techniques can occasionally produce false positive results. The development of novel approaches for the identification of SARS‐CoV‐2 is a significant area of research because of the limitations of current methods. A biosensor based on a defective binary photonic crystal (PCL) is proposed to detect SARS‐CoV‐2 concentration in this work. The model of pathogen concentration‐dependent refractive index of the analyte is taken into consideration. The concept of operation of the PCL sensor is based on the defect mode shift when any change in the refractive index of the defect layer occurs. The transmission spectra of the PCL are plotted and studied. An optimum incident angle of 80° and a defect layer thickness of 5 μm are found. The relationship between the defect mode’s wavelength and the concentration of SARS‐CoV‐2 is investigated and a sensitivity of 2648.3 nm/RIU was attained.This article is protected by copyright. All rights reserved.

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Highly sensitive refractive index sensor based on SPR with silver and titanium dioxide coating

Cited by 31 publications

References 34 publications

Nanoparticle-Based FM-MCF LSPR Biosensor With Open Air-Hole

Nanoparticle-Based FM-MCF LSPR Biosensor With Open Air-Hole

High-sensitivity temperature sensor based on photonic crystal fiber filled with ethanol and toluene

Detection of SARS‐CoV‐2 Virus Concentration Using a Simple Structure of Binary Photonic Crystal Sensor

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