Sensitivity enhancement of the SPR biosensor for Pseudomonas bacterial detection employing a silicon-barium titanate structure

Vasimalla, Yesudasu; Pradhan, Himansu Shekhar; Pandya, Rahul Jasvantbhai

doi:10.1364/ao.427499

Cited by 30 publications

(8 citation statements)

References 42 publications

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“…Greater Quality Factor has been achieved by the proposed biosensor than the work reported in Ref. [45]. The proposed sensor's length is also calculated as very small compared to the sensor reported in Ref [46].…”

Section: = (6)mentioning

confidence: 67%

Numerical Investigation of Photonic Crystal Fiber-Based Biosensor for Pathogens Detection in Water

2022

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In this paper, a Photonic Crystal Fiber (PCF) based Surface Plasmon Resonance (SPR) biosensor for the detection of four bacteria such as Vibrio Cholera, Escherichia Coli (E. coli), Bacillus Anthracis, and Enterococcus Faecalis is proposed and evaluated numerically using finite element method (FEM)-based simulation tool. The proposed sensor exhibits excellent performance characteristics and has the configuration of identifying analyte samples externally. The sensor is designed with a basic square lattice of PCF, covered with a thin chemically stable gold layer. The proposed sensor can detect these four bacteria from pure water and has the highest wavelength sensitivity of 5161 nm/RIU for Enterococcus Faecalis. Other critical parameters such as Signal to Noise Ratio, Detection Limit, Sensor Length, Quality Factor, and Detection Accuracy are also calculated and presented for the proposed PCF biosensor.

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Section: = (6)mentioning

confidence: 67%

Numerical Investigation of Photonic Crystal Fiber-Based Biosensor for Pathogens Detection in Water

2022

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“…Fig. 9 shows the electric field intensity distribution for the conventional SPR sensor structure and BK7-ZnO-Ag- 23 Al O -BP-sensing medium configuration at the sensing medium's refractive index of 1.330. According to Fig.…”

Section: Selncirtcsftnldsiirnsgihsasal Itis Smentioning

confidence: 99%

“…BP has a better capacity to adsorb biomolecules compare to graphene and MoS2 [22]. Yesudasu Vasimalla et al reported an SPR biosensor based on the silica-barium titanate framework and BP to achieve 370 °/RIU sensitivity [23], Their team also discovered that bismuth ferrate-bromide-BP structure increased performance more effectively than bismuth ferrate-bromide-graphene structure [24]. Though the 2D nanomaterial can improve the sensor's angular sensitivity, it is challenging to maintain its accuracy and figure of merit.…”

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confidence: 99%

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Sensitivity Improvement of Bimetallic Layer-Based SPR Biosensor Using ZnO and Black Phosphorus

Wang

Zhang

Liu

et al. 2023

Preprint

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In this paper, a brand-novel surface plasmon resonance (SPR) biosensor structure built by bimetallic layers (Ag, Al2O3), zinc oxide (ZnO), and black phosphorus (BP) is proposed. The incident light wavelength is 633nm. The angular sensitivity (S), detection accuracy (DA), the figure of merit (FoM), and electric field strength of the proposed construction and other constructions are numerically investigated and compared. To optimize the sensor's performance, the influence of the thickness of each layer on the proposed construction’s performance was simulated. The proposed construction utilizes the large surface-to-volume ratio of ZnO along with the high biomolecule adsorption of BP for sensing performance improvement. It is found that the proposed sensing structure’s highest sensitivity of 400 °/RIU, that's 294.75% higher than the conventional silver-based sensor. This sensing structure might provide ideas for the construction of precision detection suited SPR sensors.

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“…Out of the silver-based SPR con gurations, which considered the dielectric properties of BTO, sensitivity improved substantially but at the cost of compromising the Figure of Merit (FOM) (Srivastava et al 2020) (Sun et al 2019) (Vasimalla et al 2021). Also, in a gold-based sensor employing BTO, FOM was observed to be as low as 37.22 RIU − 1 (Mostufa et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Resolution enhancement using a multi-layered aluminum-based plasmonic device for chikungunya virus detection

2023

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Biomolecular variations can be accounted for by changes in the intrinsic properties of the surrounding medium, such as the refractive index. This work employs such an arrangement using a modi ed attenuated total internal re ection con guration for telecommunication wavelength (1550nm). The phenomenon of surface plasmon resonance is initiated by Aluminum (Al) metal due to its low cost and better compatibility with CMOS devices. To achieve improved plasmonic response in terms of the sensor's resolution, we have explored metal-dielectric-metal con guration under angle interrogation.Barium titanate and Molybdenum disul de (MoS 2 ) have been employed as the high dielectric constant material and the binding media respectively to enhance the sensing performance. After a series of optimizations, the proposed device con guration leads to a maximum Figure of Merit (FOM) of 540.9 RIU − 1 , thus enhancing the resolution. The proposed plasmonic device can be used for chikungunya virus detection by considering different blood components in normal and infected stages. This Al-based multilayered plasmonic device can serve many applications for resolution enhancement in the near-infrared region.

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Sensitivity enhancement of the SPR biosensor for Pseudomonas bacterial detection employing a silicon-barium titanate structure

Cited by 30 publications

References 42 publications

Numerical Investigation of Photonic Crystal Fiber-Based Biosensor for Pathogens Detection in Water

Numerical Investigation of Photonic Crystal Fiber-Based Biosensor for Pathogens Detection in Water

Sensitivity Improvement of Bimetallic Layer-Based SPR Biosensor Using ZnO and Black Phosphorus

Resolution enhancement using a multi-layered aluminum-based plasmonic device for chikungunya virus detection

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