Peningkatan kepekaan biosensor urea berasaskan resonans plasmon permukaan dan tatasusunan kretschmann dengan struktur hibrid grafin- MoS2

Translated title of the contribution: Sensitivity enhancement of urea biosensor based on surface plasmon resonance and kretschmann configuration with graphene-MoS2 hybrid structure

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The present paper analyses a surface plasmon resonance (SPR) biosensor based on graphene that leads to improvement on the efficiency of an urea biosensor due to high adsorption. Kretschmann configuration is well known as the most effectively used technique for plasmon excitation. In this work, we investigated the effect of MoS2 with a fine layer of graphene deposited on a plasmonic material, gold (Au), into the configuration. Simulation is based on finite-difference time domain (FDTD) method for analysis. The performance of SPR biosensor can be monitored by analyzing the sensitivity and full width-at-half-maximum (FWHM) of the SPR spectrum. The measurements are observed at 670 and 785 nm for urea detection. The molarity and refractive index is varied from 1.335 to 1.342 for the sensing layer. The results showed that the percentage increase in sensitivity for the proposed biosensor Au/MoS2/graphene over conventional biosensor Au is 98% and 202% at 670 and 785 nm, respectively, which indicates that the proposed novel SPR biosensor is better suited for urea detection.

Original languageMalay
Pages (from-to)1033-1038
Number of pages6
JournalSains Malaysiana
Volume47
Issue number5
DOIs
Publication statusPublished - 1 May 2018

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hybrid structures
ureas
bioinstrumentation
surface plasmon resonance
graphene
augmentation
sensitivity
configurations
finite difference time domain method
refractivity
gold
adsorption
excitation
simulation

ASJC Scopus subject areas

  • General

Cite this

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title = "Peningkatan kepekaan biosensor urea berasaskan resonans plasmon permukaan dan tatasusunan kretschmann dengan struktur hibrid grafin- MoS2",
abstract = "The present paper analyses a surface plasmon resonance (SPR) biosensor based on graphene that leads to improvement on the efficiency of an urea biosensor due to high adsorption. Kretschmann configuration is well known as the most effectively used technique for plasmon excitation. In this work, we investigated the effect of MoS2 with a fine layer of graphene deposited on a plasmonic material, gold (Au), into the configuration. Simulation is based on finite-difference time domain (FDTD) method for analysis. The performance of SPR biosensor can be monitored by analyzing the sensitivity and full width-at-half-maximum (FWHM) of the SPR spectrum. The measurements are observed at 670 and 785 nm for urea detection. The molarity and refractive index is varied from 1.335 to 1.342 for the sensing layer. The results showed that the percentage increase in sensitivity for the proposed biosensor Au/MoS2/graphene over conventional biosensor Au is 98{\%} and 202{\%} at 670 and 785 nm, respectively, which indicates that the proposed novel SPR biosensor is better suited for urea detection.",
keywords = "FDTD simulation, FWHM, Kretschmann configuration, Surface plasmon resonance, Urea biosensor",
author = "Jamil, {Nur Akmar} and {N V Visvanathan}, {P. Susthitha Menon} and Mei, {Gan Siew} and {Yeop Majlis}, Burhanuddin",
year = "2018",
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AU - N V Visvanathan, P. Susthitha Menon

AU - Mei, Gan Siew

AU - Yeop Majlis, Burhanuddin

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N2 - The present paper analyses a surface plasmon resonance (SPR) biosensor based on graphene that leads to improvement on the efficiency of an urea biosensor due to high adsorption. Kretschmann configuration is well known as the most effectively used technique for plasmon excitation. In this work, we investigated the effect of MoS2 with a fine layer of graphene deposited on a plasmonic material, gold (Au), into the configuration. Simulation is based on finite-difference time domain (FDTD) method for analysis. The performance of SPR biosensor can be monitored by analyzing the sensitivity and full width-at-half-maximum (FWHM) of the SPR spectrum. The measurements are observed at 670 and 785 nm for urea detection. The molarity and refractive index is varied from 1.335 to 1.342 for the sensing layer. The results showed that the percentage increase in sensitivity for the proposed biosensor Au/MoS2/graphene over conventional biosensor Au is 98% and 202% at 670 and 785 nm, respectively, which indicates that the proposed novel SPR biosensor is better suited for urea detection.

AB - The present paper analyses a surface plasmon resonance (SPR) biosensor based on graphene that leads to improvement on the efficiency of an urea biosensor due to high adsorption. Kretschmann configuration is well known as the most effectively used technique for plasmon excitation. In this work, we investigated the effect of MoS2 with a fine layer of graphene deposited on a plasmonic material, gold (Au), into the configuration. Simulation is based on finite-difference time domain (FDTD) method for analysis. The performance of SPR biosensor can be monitored by analyzing the sensitivity and full width-at-half-maximum (FWHM) of the SPR spectrum. The measurements are observed at 670 and 785 nm for urea detection. The molarity and refractive index is varied from 1.335 to 1.342 for the sensing layer. The results showed that the percentage increase in sensitivity for the proposed biosensor Au/MoS2/graphene over conventional biosensor Au is 98% and 202% at 670 and 785 nm, respectively, which indicates that the proposed novel SPR biosensor is better suited for urea detection.

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KW - Surface plasmon resonance

KW - Urea biosensor

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