Modelling and performance analysis of a plasmonic biosensor comprising of silicon and chalcogenide materials for detecting refractive index variations of hemoglobin in near infrared

Brahmachari, Kaushik; Ray, Mina

doi:10.1016/j.ijleo.2015.12.148

Cited by 8 publications

(5 citation statements)

References 16 publications

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“…Additionally, the structure also exhibits very low average FWHM of around 0.0050°. This is much lesser than recently reported values (Sharma 2013;Brahmachari and Ray 2016;Quyang et al 2016). Thus, provides comparably high FOM.…”

Section: Haemoglobin Sensing Analysiscontrasting

confidence: 54%

“…The FWHM was further improved by using different prism materials (substrate). The gold over silicon was employed to decrease the FWHM to 0.745° but overall sensitivity was decrease to 0.0028°/ (g/L) (Brahmachari and Ray 2016). Recently in 2020, Keshavarz et al (2020) used substrate/Au/Graphene/WS 2 structure for haemoglobin concentration measurement and reported an average sensitivity of 235.24°/RIU along with 10.16° FWHM.…”

Section: Introductionmentioning

confidence: 99%

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Design analysis of Bloch surface wave based sensor for haemoglobin concentration measurement

Goyal

Pal

2020

Appl Nanosci

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In this paper, a Bloch Surface Waves (BSW) based sensor is proposed to estimate the haemoglobin concentration in human blood. The behaviour of the sensor is analysed using a transfer matrix method. The proposed structure is designed considering one-dimensional photonic crystal, where a defective top layer is deliberately introduced to confine a surface plasmon-like mode called Bloch mode at the top interface. The effective refractive index of top interface changes along with haemoglobin concentration. Thereby, monitoring the angel of incidence to confine BSW mode can helps in determining the haemoglobin concentration. The sensing capability, FWHM and figure-of-merit of the proposed structure are improved by optimizing the defect layer thicknesses, incident angels and wavelengths. Proposed structure shows an average FWHM and average sensitivity of around 0.00508 and 0.0133°/(g/L) respectively.

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Section: Haemoglobin Sensing Analysiscontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Design analysis of Bloch surface wave based sensor for haemoglobin concentration measurement

Goyal

Pal

2020

Appl Nanosci

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“…The angular interrogation exhibits a FWHM of less than 0.1 degree, which leads to an average FOM of about 260.7 RIU −1 . The mentioned average FWHM values in both angular and wavelength interrogation are much less than recently reported values [53][54][55]. The infiltrated analyte concentration (refractive index) can be calculated from Equations ( 10) and (11), which are generated by polynomial fitting of Figure 6.…”

Section: Sensing Characteristics Discussionmentioning

confidence: 82%

Interface Edge Mode Confinement in Dielectric-Based Quasi-Periodic Photonic Crystal Structure

Goyal

Massoud

2022

Photonics

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In this paper, the localization of optical interface edge-states is analyzed for a dielectric material-based quasi-periodic photonic crystal (QPhC) structure. The design comprises a bilayer PhC structure, where layers are arranged in a Fibonacci configuration to introduce quasi-periodicity. The impact of local symmetric sub-structures on Eigenstate coupling is considered over a wider wavelength range. This confirms the localization of interface edge modes for different wavelengths at the structural local resonators, where the number of local resonators depends on the length of the QPhC. The proposed seven-element QPhC structure shows a strong Tamm-like top interface edge mode localization for a 45.04° incident angle at 750 nm operating wavelength, whereas a bulk interface guided mode is also excited for a higher incident angle of around 79°. The investigation facilitates the development of reconfigurable devices to excite both bulk interface and surface interface edge modes with improved field intensities for spectroscopy and sensing applications.

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“…Surface plasmon resonance (SPR) is very sensitive to a slight change in analytes adjacent to the sensing layers, and SPR-based sensors have been applied for the detection of many substances, such as cadmium ions [5], glucose [6], glycosylated haemoglobin [7], endotoxin [8], manganese ion [9], hydrogen [10], butane gas [11], and dengue virus [12]. Furthermore, employing SPR technology can realise quick, label-free, real-time, and highly sensitive detection for haemoglobin concentration [13][14][15][16][17][18]. However, the existing literature mostly used the prism-coupling-configuration-based sensor with angular interrogation to excite the SPR phenomenon and analyse sensing effects.…”

Section: Introductionmentioning

confidence: 99%

A surface plasmon resonance haemoglobin concentration sensor based on D‐type optical fibre with a graphene‐gold surface architecture

Shi

Guo

et al. 2023

IET Optoelectronics

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In this study, a surface plasmon resonance sensor for detecting haemoglobin concentration based on a D‐type optical fibre with a graphene‐gold surface architecture is proposed. The graphene‐gold surface architecture included a 50 nm thick gold film and monolayer graphene film, which were decorated on a 10 mm long D‐type sensing region. The proposed sensor worked in wavelength interrogation mode, with the light wavelength ranging from 400 to 1100 nm. The authors realised the D‐type optical fibre surface polishing process, the gold film vacuum coating process, and the chemical‐vapour‐deposited graphene's wet transfer process. Furthermore, the fabricated sensors were used to detect the refractive index (RI) of haemoglobin samples, which varied from 1.331 to 1.346. Experiment results show that the fitted RI sensitivity of the sensor decorated with gold and graphene reaches 1874.41 nm/RIU, 4.995% higher than that of the sensor decorated only with gold. The concentration sensitivity of the sensor coated with gold and graphene film is 4.96 nm/(g/dL), and the proposed sensor can provide a resolution of 20.2 mg/dL for haemoglobin concentration detection.

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Modelling and performance analysis of a plasmonic biosensor comprising of silicon and chalcogenide materials for detecting refractive index variations of hemoglobin in near infrared

Cited by 8 publications

References 16 publications

Design analysis of Bloch surface wave based sensor for haemoglobin concentration measurement

Design analysis of Bloch surface wave based sensor for haemoglobin concentration measurement

Interface Edge Mode Confinement in Dielectric-Based Quasi-Periodic Photonic Crystal Structure

A surface plasmon resonance haemoglobin concentration sensor based on D‐type optical fibre with a graphene‐gold surface architecture

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