A Graphene/Gold-Coated Surface Plasmon Sensor for Sodium Nitrate Detection

H. A. Zain; M. Batumalay; Z. Harith; H. R.A. Rahim; S. W. Harun

doi:10.3390/photonics9080588

A Graphene/Gold-Coated Surface Plasmon Sensor for Sodium Nitrate Detection

H. A. Zain, M. Batumalay^*, Z. Harith, H. R.A. Rahim, S. W. Harun

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A sodium nitrate sensor with graphene/gold coating is presented in this paper. A Kretschmann setup with angle interrogation was used to detect sodium nitrate in the range of 0–15%. Using a graphene coating on top of the 50 nm gold layer showed an improvement in the sensitivity of the sensor. The gold-coated setups had a sensitivity of 0.198°/%. In contrast, the graphene/gold-coated samples showed a sensitivity of 0.244°/% due to the charge transfer between the graphene and the gold and the resulting excited solid electric field. The graphene/gold-coated sensor showed good stability with time in the temperature range of 19–34 °C. This shows that this setup may be beneficial in detecting sodium nitrate.

Original language	English
Article number	588
Journal	Photonics
Volume	9
Issue number	8
DOIs	https://doi.org/10.3390/photonics9080588
State	Published - Aug 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 by the authors.

Keywords

graphene
sensors
sodium nitrate
surface plasmon resonance

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Instrumentation
Radiology Nuclear Medicine and imaging

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Cite this

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title = "A Graphene/Gold-Coated Surface Plasmon Sensor for Sodium Nitrate Detection",

abstract = "A sodium nitrate sensor with graphene/gold coating is presented in this paper. A Kretschmann setup with angle interrogation was used to detect sodium nitrate in the range of 0–15%. Using a graphene coating on top of the 50 nm gold layer showed an improvement in the sensitivity of the sensor. The gold-coated setups had a sensitivity of 0.198°/%. In contrast, the graphene/gold-coated samples showed a sensitivity of 0.244°/% due to the charge transfer between the graphene and the gold and the resulting excited solid electric field. The graphene/gold-coated sensor showed good stability with time in the temperature range of 19–34 °C. This shows that this setup may be beneficial in detecting sodium nitrate.",

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author = "Zain, {H. A.} and M. Batumalay and Z. Harith and Rahim, {H. R.A.} and Harun, {S. W.}",

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doi = "10.3390/photonics9080588",

language = "English",

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AU - Zain, H. A.

AU - Batumalay, M.

AU - Harith, Z.

AU - Rahim, H. R.A.

AU - Harun, S. W.

PY - 2022/8

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N2 - A sodium nitrate sensor with graphene/gold coating is presented in this paper. A Kretschmann setup with angle interrogation was used to detect sodium nitrate in the range of 0–15%. Using a graphene coating on top of the 50 nm gold layer showed an improvement in the sensitivity of the sensor. The gold-coated setups had a sensitivity of 0.198°/%. In contrast, the graphene/gold-coated samples showed a sensitivity of 0.244°/% due to the charge transfer between the graphene and the gold and the resulting excited solid electric field. The graphene/gold-coated sensor showed good stability with time in the temperature range of 19–34 °C. This shows that this setup may be beneficial in detecting sodium nitrate.

AB - A sodium nitrate sensor with graphene/gold coating is presented in this paper. A Kretschmann setup with angle interrogation was used to detect sodium nitrate in the range of 0–15%. Using a graphene coating on top of the 50 nm gold layer showed an improvement in the sensitivity of the sensor. The gold-coated setups had a sensitivity of 0.198°/%. In contrast, the graphene/gold-coated samples showed a sensitivity of 0.244°/% due to the charge transfer between the graphene and the gold and the resulting excited solid electric field. The graphene/gold-coated sensor showed good stability with time in the temperature range of 19–34 °C. This shows that this setup may be beneficial in detecting sodium nitrate.

KW - graphene

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ER -

A Graphene/Gold-Coated Surface Plasmon Sensor for Sodium Nitrate Detection

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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