Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fiber optic evanescent field sensors for pH monitoring in civil infrastructure
Fiber optic pH sensors based on the evanescent field spectroscopic technique is studied. Portions of poly (-methyl methacrylate) (PMMA) cladding of plastic clad silica (PCS) optical fibers are replaced with new cladding composed of PMMA doped with a pH sensitive chromophore. Methyl Red, Thymol Blue, Thymolphtalein are used for sensing pH at the acid, neutral and base levels. Changes in the pH of the analyte are detected by measuring the absorption spectrum of the new cladding in the sensing region of the optical fiber.
Fiber optic evanescent field sensors for pH monitoring in civil infrastructure
Fiber optic pH sensors based on the evanescent field spectroscopic technique is studied. Portions of poly (-methyl methacrylate) (PMMA) cladding of plastic clad silica (PCS) optical fibers are replaced with new cladding composed of PMMA doped with a pH sensitive chromophore. Methyl Red, Thymol Blue, Thymolphtalein are used for sensing pH at the acid, neutral and base levels. Changes in the pH of the analyte are detected by measuring the absorption spectrum of the new cladding in the sensing region of the optical fiber.
Fiber optic evanescent field sensors for pH monitoring in civil infrastructure
Ghandehari, Masoud (Autor:in) / Vimer, Cristian S. (Autor:in)
Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Civil Infrastructures ; 2002 ; San Diego,California,United States
Proc. SPIE ; 4704
18.06.2002
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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