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AKHIRUDDIN MADDU1,* , HAMDANI ZAIN2, SAR SARDY2
A fiber optic sensor system for detection of methanol vapor was developed. The system is based on the change in the absorption of evanescent wave on core-modified cladding interface during interaction with methanol vapor. In this research, it is used polyaniline nanofiber synthesized by interfacial polymerization as modified cladding. The spectroscopy data show a specific absorbance spectrum of polyaniline nanofiber which changes in the visible range, especially in blue and red bands, when exposed to methanol vapor due to a conformational alignment of polyaniline blackbond structure. The response of the fiber optic sensor was investigated by measuring the transmission light intensity via fiber optic sensor system. It is obtained a very fast response time of 40 s and recovery time of 15 s. The fiber optic sensor also exhibits a good reversibility and repeatability.
Polyaniline nanofiber, Fiber optic sensor, Methanol vapor.
AKHIRUDDIN MADDU, HAMDANI ZAIN, SAR SARDY, The use of polyaniline nanofiber as modified cladding for fiber optic methanol vapor sensor, Optoelectronics and Advanced Materials - Rapid Communications, 1, 3, March 2007, pp.113-117 (2007).
Submitted at: Dec. 19, 2006
Accepted at: Feb. 14, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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