Moh. Yasin and Irawati, N. and Isa, N.M. and Sulaiman Wadi Harun and Ahmad, F. (2018) Graphene coated silica microfiber for highly sensitive magnesium sensor. Sensors and Actuators, A: Physical, 273. pp. 67-71.

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Abstract

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. © 2018 Elsevier B.V.

Item Type:	Article
Additional Information:	cited By 10
Uncontrolled Keywords:	Carbon; Carbon nanotubes; Coatings; Fiber optics; Magnesium; Optical fibers; Probes; Silica; Yarn, Drop-coating method; Flame brushing techniques; Graphene coatings; High sensitivity; Magnesium concentrations; Micro-fiber; Resonant peaks; Sensing layers, Graphene
Divisions:	Artikel Ilmiah > SCOPUS INDEXED JOURNAL
Creators:	Creators NIM Moh. Yasin UNSPECIFIED Irawati, N. UNSPECIFIED Isa, N.M. UNSPECIFIED Sulaiman Wadi Harun UNSPECIFIED Ahmad, F. UNSPECIFIED
Depositing User:	Ika Rudianto
Last Modified:	31 Dec 2020 14:24
URI:	http://repository.unair.ac.id/id/eprint/102374
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