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Graphene coated silica microfiber for highly sensitive magnesium sensor

A high sensitivity and simple magnesium sensor based on an silica optical microfiber coated with graphene for the detection of different concentrations of magnesium in de-ionized water is developed and demonstrated. The silica microfiber probe is fabricated by flame brushing technique and it has a w...

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Main Authors: Yasin, M., Irawati, N., Isa, N. M., Harun, S. W., Ahmad, F.
Format: Article
Published: Elsevier B. V. 2018
Subjects:
T Technology (General)
Online Access:http://eprints.utm.my/id/eprint/85922/
http://dx.doi.org/10.1016/j.sna.2018.02.021
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spelling my.utm.859222020-07-30T07:39:00Z http://eprints.utm.my/id/eprint/85922/ Graphene coated silica microfiber for highly sensitive magnesium sensor Yasin, M. Irawati, N. Isa, N. M. Harun, S. W. Ahmad, F. T Technology (General) A high sensitivity and simple magnesium sensor based on an silica optical microfiber coated with graphene for the detection of different concentrations of magnesium in de-ionized water is developed and demonstrated. The silica microfiber probe is fabricated by flame brushing technique and it has a waist diameter of 6?µm with tapering length of 3?cm. The microfiber is coated with graphene, which functions as a sensing layer using drop coating method. It is observed that the output power from the probe decreases as the magnesium concentration increases. Without the graphene coating, the sensor has a sensitivity of 12.1?dB/% with slope linearity of more than 98.31% and resolution of 0.0102%. However, the sensitivity of the sensor is significantly improved to 19.63?dBm/% with better slope linearity of 99.25% and resolution of 0.0038% as the graphene is coated onto the silica microfiber probe. The resonant peak also shifts to a longer wavelength as the concentration of magnesium solution increased. Elsevier B. V. 2018-04 Article PeerReviewed Yasin, M. and Irawati, N. and Isa, N. M. and Harun, S. W. and Ahmad, F. (2018) Graphene coated silica microfiber for highly sensitive magnesium sensor. Sensors and Actuators, A: Physical, 273 . pp. 67-71. ISSN 0924-4247 http://dx.doi.org/10.1016/j.sna.2018.02.021
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic T Technology (General)
spellingShingle T Technology (General)
Yasin, M.
Irawati, N.
Isa, N. M.
Harun, S. W.
Ahmad, F.
Graphene coated silica microfiber for highly sensitive magnesium sensor
description A high sensitivity and simple magnesium sensor based on an silica optical microfiber coated with graphene for the detection of different concentrations of magnesium in de-ionized water is developed and demonstrated. The silica microfiber probe is fabricated by flame brushing technique and it has a waist diameter of 6?µm with tapering length of 3?cm. The microfiber is coated with graphene, which functions as a sensing layer using drop coating method. It is observed that the output power from the probe decreases as the magnesium concentration increases. Without the graphene coating, the sensor has a sensitivity of 12.1?dB/% with slope linearity of more than 98.31% and resolution of 0.0102%. However, the sensitivity of the sensor is significantly improved to 19.63?dBm/% with better slope linearity of 99.25% and resolution of 0.0038% as the graphene is coated onto the silica microfiber probe. The resonant peak also shifts to a longer wavelength as the concentration of magnesium solution increased.
format Article
author Yasin, M.
Irawati, N.
Isa, N. M.
Harun, S. W.
Ahmad, F.
author_facet Yasin, M.
Irawati, N.
Isa, N. M.
Harun, S. W.
Ahmad, F.
author_sort Yasin, M.
title Graphene coated silica microfiber for highly sensitive magnesium sensor
title_short Graphene coated silica microfiber for highly sensitive magnesium sensor
title_full Graphene coated silica microfiber for highly sensitive magnesium sensor
title_fullStr Graphene coated silica microfiber for highly sensitive magnesium sensor
title_full_unstemmed Graphene coated silica microfiber for highly sensitive magnesium sensor
title_sort graphene coated silica microfiber for highly sensitive magnesium sensor
publisher Elsevier B. V.
publishDate 2018
url http://eprints.utm.my/id/eprint/85922/
http://dx.doi.org/10.1016/j.sna.2018.02.021
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score 13.211869

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