Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/16556
Title: Modified plastic optical fiber with CNT and graphene oxide nanostructured coatings for ethanol liquid sensing
Authors: Khalaf, Arasu, P.T. A.L.
Lim, Paiman, S H.N.
Yusof, Mahdi, M.A. N.A
Yaacob, M.H.
Keywords: Yarn
Plastic coatings
Scanning electron microscopy
Atomic force microscopy
Issue Date: 19-Sep-2017
Abstract: A high sensitivity and simple ethanol sensor based on an un-cladded multimode plastic optical fiber (UCPOF) coated with carbon nanotubes (CNTs) for the detection of different concentrations of ethanol in de-ionized water is developed and demonstrated. The UCPOF probe is fabricated by chemically removing the fiber cladding and integrated with CNT as a sensing layer. The effect of surface morphology on the sensor performance is investigated by characterizing another UCPOF coated with GO nanomaterial. The developed fibers are coated with CNTs and GO using drop casting technique. Energy dispersive X-ray spectroscopy (EDX), atomic-force microscopy (AFM) and scanning electron microscope (SEM) are used to investigate the element and morphology of the synthesized nanomaterials. The experimental results indicated that the absorbance spectrum of the CNT-based UCPOF sensor increases linearly with a higher sensitivity of 0.68/vol% and magnitude change of 95.4% as compared to 0.19/vol% and 56.3%, respectively, for the GO-based sensor. The UCPOF coated with CNT exhibits faster response and recovery than that of GO. The sensor shows high selectivity to ethanol amongst a range of diluted organic VOCs. The superior sensing performance of the developed fiber sensor indicates its high efficiency for ethanol detection in various industrial applications. © 2017 Optical Society of America.
URI: 10.1364/OE.25.005509
http://ir.unikl.edu.my/jspui/handle/123456789/16556
ISSN: 10944087
Appears in Collections:Journal Articles



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.