Refractive Index and Sensing of Glucose Molarities determined using Au-Cr K-SPR at 670/785 nm Wavelength

Menon, P. Susthitha; Mulyanti, Budi; Jamil, Nor Aini; Wulandari, Chandra; Nugroho, Harbi Setyo; Gan, Siew Mei; Abidin, Noor Faizah Zainul; Hasanah, Lilik; Pawinanto, Roer Eka; Berhanuddin, Dilla Duryha

doi:10.17576/jsm-2019-4806-13

Cited by 19 publications

(12 citation statements)

References 28 publications

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“…Another SPR parameter is Δθ0.5, which refers to the difference between the minimum resonance angle and mid-reflection angle in the SPR curve. A broad spectrum of reflection that becomes narrower with a deeper resonance peak can effectively detect resonance shifts due to the presence of analytes [12].…”

Section: A Fdtd Simulationmentioning

confidence: 99%

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Menon

Jamil

Mei

et al. 2020

IEEE J. Electron Devices Soc.

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The Kretschmann-based surface plasmon resonance (K-SPR) sensor was developed using multilayer graphene and molybdenum disulphide (MoS2) structures on a plasmonic gold (Au) layer for ethanol detection. In this configuration, the SPR spectra of minimum reflectance versus SPR angle was used to determine the sensitivity, detection accuracy and quality factor as the main figure of merit (FOM). Both graphene and MoS2 were used as hybrid detection layers to enhance the ethanol sensing performance using Finite Difference Time Domain (FDTD). The multilayer graphene/Au and MoS2/Au sensors gave a maximum sensitivity of 192.03/RIU and 153.25/RIU respectively at 785 nm optical wavelength. In terms of material characterization using the K-SPR technique, chemical vapor deposition (CVD)-grown graphene on Au, had a thickness of 1.17 nm with real and imaginary refractive indices of 2.85, 0.74, and 3.1, 1.19, respectively, at optical wavelengths of 670 nm and 785 nm.

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Section: A Fdtd Simulationmentioning

confidence: 99%

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Menon

Jamil

Mei

et al. 2020

IEEE J. Electron Devices Soc.

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“…The RI values were obtained based on the linearity of RI glucose concentration, y = 0.0014 x + c , as disclosed in Menon et al at 670 nm. 3 Compared to the sensing in air, the K-SPR sensor showed an increment in sensitivity values for thicker Cr layers for glucose sensing. As expected, higher glucose detection sensitivity was achieved at lower visible wavelength of 632.8 nm compared to the longer NIR wavelength of 780 nm.…”

Section: Resultsmentioning

confidence: 91%

“…The sensor sensitivity is 106.73°·RIU −1 for glucose concentrations of 1–5% corresponding to RI values of 1.3301, 1.3318, 1.3335, 1.3352, and 1.3369 at optical wavelength of 785 nm. These RI values were obtained based on the linearity of RI glucose concentration, y = 0.0017 x + c , as disclosed in Menon et al 3 The RI value of water of 1.3284 was obtained from the BioNavis SPR Navi 200 L LayerSolver datasheet. The sensitivity of this K-SPR sensor is higher than that reported in the studies of Gan et al, 58 Kushwaha et al, 59 and Rahman et al 60 but lower than our previous work 61 –63 due to the usage of 2D materials with higher RI values that enhance SPR signal amplification.…”

Section: Resultsmentioning

confidence: 99%

“…Nowadays, surface plasmon resonance (SPR)-based sensors are receiving profound attention for its fast response and high accuracy to measure biomolecular interaction in real time and label-free environment. [1][2][3][4] Even in the ongoing COVID-19 pandemic, SPR-based biosensors have emerged as a promising and alternative solution for the diagnosis of the lethal virus. 5 The inclusion of localized SPR and metamaterial effects are also popular sensing alternatives.…”

Section: Introductionmentioning

confidence: 99%

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Multi-response optimization of chromium/gold-based nanofilm Kretschmann-based surface plasmon resonance glucose sensor using finite-difference time-domain and Taguchi method

Mohamad

Wee

Mohamed

et al. 2020

Nanomaterials and Nanotechnology

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Kretschmann-based surface plasmon resonance sensor utilizing chromium and gold nanofilms is ideal for label-free biomedical sensing. In this work, Taguchi’s L9 orthogonal array method was used to optimize the effects of three control factors and noise factor, which are the incident optical wavelength, chromium and gold nanofilm thicknesses, and their root-mean-square surface roughness, on the performance of the Kretschmann-based surface plasmon resonance sensor. The control factors were varied at three levels for a novel multi-response optimization of the Kretschmann-based surface plasmon resonance sensor for the minimum reflectivity, the full-width-at-half-maximum, and the sensitivity of 3% glucose detection, executed using Lumerical’s two-dimensional finite-difference time-domain method. Using Taguchi method, the best control factor setting in air was A3B2C2 corresponding to 785 nm optical wavelength, 0.5 nm chromium, and 50 nm gold layer thickness, respectively, with minimum reflectivity of 0.0017%, full-width-at-half-maximum of 0.4759°, and glucose-sensing sensitivity of 106.73°·RIU−1. The detection accuracy and quality factor were 0.01 and 224.26 RIU−1, respectively. It was also indicated that chromium nanofilm thickness of 0.5–3 nm and its root-mean-square surface roughness has a negligible factor effect compared to other control factors. Taguchi method’s factor effect analysis showed that for chromium layer thickness of 1–3 nm, the minimum reflectivity values are predominantly determined by the gold layer thickness with 75% factor effect, followed by optical wavelength with 11%. Factor effect of full-width-at-half-maximum is determined by optical wavelength (57%), followed by gold layer thickness (38%). Sensitivity is 88% determined by optical wavelength and 10% determined by gold layer thickness. The Kretschmann-based surface plasmon resonance glucose sensor with the best glucose-sensing sensitivity was at optical wavelength of 632.8 nm with a higher sensitivity value of 163.415°·RIU−1 but lower detection accuracy and quality factor values of 0.001 and 24.86 RIU−1, respectively, compared to near-infrared wavelength of 785 nm. In conclusion, finite-difference time-domain and Taguchi method is suitable for multi-response optimization of control and noise factors of Kretschmann-based surface plasmon resonance sensors.

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“…In this work, titanium dioxide (TiO 2 ) was chosen to be the structure underneath GO because this type of metal oxide will provide a strong plasmonic field improvement with localization and allows controlling light dispersion and absorption [7]. The bandgap of GO is 0 eV so TiO 2 functions to reflect light at a maximum intensity which in turn interacts directly to the metal surface [8]. TiO 2 has excellent chemical stability which makes it a suitable material for biosensor detection and because of that, it will improve the PL spectra intensity.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of nano-thin film GO/TiO2 layers for Kretschmann-based surface plasmon resonance visible sensing using FDTD method

Khairulazdan¹,

Mohamed²,

Berhanuddin³

et al. 2021

Optica Applicata

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Kretschmann-based surface plasmon resonance (K-SPR) is suitable for biomolecular sensing which provides label-free and quick detection results with real-time analysis. In this work, we have investigated the effect of graphene oxide (GO) with titanium dioxide (TiO2) thin films that are placed in hybrid above metal layers such as gold (Au), silver (Ag) and copper (Cu) with the presence of chromium (Cr) as an adhesive layer. The thickness of the Au, Ag and Cu metal thin films were optimized to 40, 30 and 30 nm, respectively, with a fixed thickness of GO of 2 nm and TiO2 of 1.9 nm. The sensing was evaluated for SPR excitation at three different visible wavelengths of 633, 670 and 785 nm. The performance of sensing was analyzed based on the reflectance intensity and full-width at half-maximum (FWHM) of the spectrum using the finite-difference time-domain (FDTD) method. The sensitivity was calculated for analyte sensing in dielectric mediums of air versus water. The sensitivity increment percentage (%ΔS) was determined when comparing analyte detection using Cr/metal and Cr/metal/GO/TiO2 sensor structures. The highest sensitivity of 94.51 deg/RIU was achieved for Cr/Cu/GO/TiO2 K-SPR sensor at 633 nm wavelength.

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Refractive Index and Sensing of Glucose Molarities determined using Au-Cr K-SPR at 670/785 nm Wavelength

Cited by 19 publications

References 28 publications

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Multi-response optimization of chromium/gold-based nanofilm Kretschmann-based surface plasmon resonance glucose sensor using finite-difference time-domain and Taguchi method

Characterisation of nano-thin film GO/TiO2 layers for Kretschmann-based surface plasmon resonance visible sensing using FDTD method

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