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
Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.sna.2018.02.021
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.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Silica microfiber, Magnesium sensor |
Subjects: | T Technology > T Technology (General) |
Divisions: | Malaysia-Japan International Institute of Technology |
ID Code: | 85922 |
Deposited By: | Widya Wahid |
Deposited On: | 30 Jul 2020 07:39 |
Last Modified: | 30 Jul 2020 07:39 |
Repository Staff Only: item control page