title: Detection of water in jet fuel using layer-by-layer thin film coated long period grating sensor.
abstract: The quantitative measurement of jet fuel additives in the field is of interest to the Air Force. The "smart nozzle" project was designed as a state-of-the-art diagnostics package attached to a single-point refueling nozzle for assessing key fuel properties as the fuel is dispensed. The objective of the work was to show proof of concept that a layer-by-layer thin film and long period grating fibers could be used to detect the presence of water in jet fuel. The data for the nafion/PDMA film and a long period grating fiber is a combination capable of quantitative measurement of water in kerosene. The average response (spectral loss wavelength shift) to the kerosene sample ranged from -6.0 for 15 ppm to -126.5 for 60 ppm water. The average calculated value for the check standard was 21.71 and ranged from 21.25 to 22.00 with a true value of 22.5 ppm water. Potential interferences were observed and are judged to be insignificant in real samples.
authors.affiliation: Miami University Center for Nanotechnology, Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA.
authors.forename: Sean D
authors.initials: SD
authors.lastname: Puckett
authors.forename: Gilbert E
authors.initials: GE
authors.lastname: Pacey
mesh_terms: D000178:Acrylamides; D000401:Aircraft; D005465:Fluorocarbon Polymers; D005648:Fuel Oils / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D000178:Acrylamides; D005465:Fluorocarbon Polymers; D005648:Fuel Oils; C429790:poly(N,N-dimethylacrylamide); D014867:Water; C040402:perfluorosulfonic acid