Bio-sensing application of chalcogenide thin film in a graphene-based surface plasmon resonance (SPR) sensor

Tamang, Jitendra Singh; Dhar, Rudra Sankar; Bhoi, Akash Kumar; Singh, Arun Kumar; Chatterjee, Somenath

doi:10.1007/s12046-021-01645-w

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…= 1.8745), Calcium Fluoride (CaF 2 ) (r.i. = 1.4329), Au and Porcelain fillings (r.i. = 1.511), Glass Ionomer (r.i.= 4.3) are considered now-a-days as they are found to be bio-compatible with the noble metals. N-Graphene layers with r.i. = 3 + 1.49106i and thickness (N × 0.34 nm [(N denotes single graphene layer)] are also introduced into the configuration for enhancing the absorption property [29][30][31][32][33]. The outer-most surface of human teeth i.e., Enamel (r.i. = 1.631), Dentin (r.i. = 1.540) and Cementum (r.i. = 1.582) are then examined in order to check for any plaque formation or requirement for treatment of cavity.…”

Section: Theoretical Approach 21 Modelling Methodsmentioning

confidence: 99%

Defects detection in dentistry: designing a graphene multi-layered based plasmonic sensor

2023

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Dental Restorative materials play a very important role in solving the issue of sensitivity in human teeth. Many such materials, based on their respective optical properties, are considered for various usages viz. cavity treatment, reparation of cracked or broken teeth, detection of plague formation, etc. A new approach to study the suitability of different restorative materials for dentistry application is timely. Surface Plasmon Resonance (SPR), being an optical phenomenon, has the capability to analyze the optical properties which may be used for Bio-medical Applications also. Considering the absorption behavior of Graphene material, the same can also be applied for detecting any plague formation in the essential components of a human teeth viz. Enamel, Dentin and Cementum. Reflectivity, Sensitivity calculations and the correlation between refractive index of different dental restorative materials and their concentration percentage have been tabulated in this manuscript. SPR curves have been obtained using MATLAB environment and Characteristic Transfer Matrix (CTM). The proper explanation of the above is discussed in detail. A new theoretical approach to detect the teeth-health with less-harmful (without X-ray source) technique has been proposed. Graphene layers play an important role as a bio-molecular recognition element and supports the restorative materials to enhance its detection features. A new technique is considered to determine the quality (cavity formation and others) of teeth-hygiene using less health-hazard radiation. LASER beam-based surface plasmon resonance phenomenon is projected here to identify the tooth condition, which will be implemented for the application purpose.

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Section: Theoretical Approach 21 Modelling Methodsmentioning

confidence: 99%

Defects detection in dentistry: designing a graphene multi-layered based plasmonic sensor

2023

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“…The calculations performed showed that the detection limit of the sensor was 3 × 10 −5 RIU. The development of SPR sensors with a chalcogenide thin-film layer was proposed in [ 27 ] for bio-applications. The film, accompanied by a graphene layer, demonstrated selective adsorption.…”

Section: Introductionmentioning

confidence: 99%

Four-Layer Surface Plasmon Resonance Structures with Amorphous As2S3 Chalcogenide Films: A Review

Popescu,

Savastru,

Stafe

et al. 2023

Materials

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The paper is a review of surface plasmon resonance (SPR) structures containing amorphous chalcogenide (ChG) films as plasmonic waveguides. The calculation method and specific characteristics obtained for four-layer SPR structures containing films made of amorphous As2S3 and As2Se3 are presented. The paper is mainly based on our previously obtained and published scattered results, to which a generalized point of view was applied. In our analysis, we demonstrate that, through proper choice of the SPR structure layer parameters, we can control the resonance angle, the sharpness of the SPR resonance curve, the penetration depth, and the sensitivity to changes in the refractive index of the analyte. These results are obtained by operating with the thickness of the ChG film and the parameters of the coupling prism. Aspects regarding the realization of the coupling prism are discussed. Two distinct cases are analyzed: first, when the prism is made of material with a refractive index higher than that of the waveguide material; second, when the prism is made of material with a lower refractive index. We demonstrated experimentally that the change in reflectance self-induced by the modification in As2S3 refractive index exhibits a hysteresis loop. We present specific results regarding the identification of alcohols, hydrocarbons, and the marker of E. coli bacteria.

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“…Sensors based on the surface plasmon resonance (SPR) phenomenon have recently attracted much attention. [16][17][18][19][20][21][22][23] These devices offer several benets over conventional sensors because of their high sensitivity, robustness, and low cost and are widely used in biological and chemical detection. Ritchie 24 proposed that the energy loss caused by SPR could be used in sensing applications in the early 1950s, and SPR-based prism sensors were thus invented.…”

Section: Introductionmentioning

confidence: 99%

Detection of kerosene adulteration in automobile fuel by a low-loss surface plasmon resonance (SPR) chemical sensor

Yang

Shi

et al. 2022

Anal. Methods

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Bio-sensing application of chalcogenide thin film in a graphene-based surface plasmon resonance (SPR) sensor

Cited by 6 publications

References 20 publications

Defects detection in dentistry: designing a graphene multi-layered based plasmonic sensor

Defects detection in dentistry: designing a graphene multi-layered based plasmonic sensor

Four-Layer Surface Plasmon Resonance Structures with Amorphous As2S3 Chalcogenide Films: A Review

Detection of kerosene adulteration in automobile fuel by a low-loss surface plasmon resonance (SPR) chemical sensor

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