Porphyrin-nanoassembled fiber-optic gas sensor fabrication: Optimization of parameters for sensitive ammonia gas detection

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dc.contributor.authorKorposh, Sergiy
dc.contributor.authorKodaira, Suguru
dc.contributor.authorSelyanchyn, Roman
dc.contributor.authorLedezma, Francisco H.
dc.contributor.authorJames, Stephen W.
dc.contributor.authorLee, Seung-Woo
dc.date.accessioned2018-01-29T15:23:45Z
dc.date.available2018-01-29T15:23:45Z
dc.date.issued2017-11-09
dc.description.abstractHighly sensitive fiber-optic ammonia gas sensors were fabricated via layer-by-layer deposition of poly(diallyldimethylammonium chloride) (PDDA) and tetrakis(4-sulfophenyl)porphine (TSPP) onto the surface of the core of a hard-clad multimode fiber that was stripped of its polymer cladding. The effects of film thickness, length of sensing area, and depth of evanescent wave penetration were investigated to clearly understand the sensor performance. The sensitivity of the fiber-optic sensor to ammonia was linear in the concentration range of 0.5–50 ppm and the response and recovery times were less than 3 min, with a limit of detection of 0.5 ppm, when a ten-cycle PDDA/TSPP film was assembled on the surface of the core along a 1 cm-long stripped section of the fiber. The sensor’s response towards ammonia was also checked under different relative humidity conditions and a simple statistical data treatment approach, principal component analysis, demonstrated the feasibility of ammonia sensing in environmental relative humidity ranging from dry 7% to highly saturated 80%. Penetration depths of the evanescent wave for the optimal sensor configuration were estimated to be 30 and 33 nm at wavelengths of 420 and 706 nm, which are in a good agreement with the thickness of the 10-cycle deposited film (ca. 30 nm).en_UK
dc.identifier.citationKorposh S, Kodaira S, Selyanchyn R, et al., (2018) Porphyrin-nanoassembled fiber-optic gas sensor fabrication: optimization of parameters for sensitive ammonia gas detection. Optics & Laser Technology, Volume 101, May 2018, pp. 1-10en_UK
dc.identifier.issn0030-3992
dc.identifier.urihttp://dx.doi.org/10.1016/j.optlastec.2017.10.027
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12936
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectOptical fiberen_UK
dc.subjectEvanescent waveen_UK
dc.subjectTetrakis(4-sulfophenyl)porphineen_UK
dc.subjectLayer-by-layer depositionen_UK
dc.subjectJ-aggregationen_UK
dc.subjectAmmoniaen_UK
dc.titlePorphyrin-nanoassembled fiber-optic gas sensor fabrication: Optimization of parameters for sensitive ammonia gas detectionen_UK
dc.typeArticleen_UK

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