000004939 001__ 4939
000004939 005__ 20141119144606.0
000004939 04107 $$aeng
000004939 046__ $$k2002-06-02
000004939 100__ $$aGhandehari, Masoud
000004939 24500 $$aAN EVANESCENT-FIELD FIBER OPTIC SENSOR FOR PH MONITORING IN CIVIL INFRASTRUCTURE

000004939 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004939 260__ $$bColumbia University in the City of New York
000004939 506__ $$arestricted
000004939 520__ $$2eng$$aFiber optic pH sensors based on the evanescent field spectroscopic technique are studied. Portions of poly-methyl methacrylate (PMMA) cladding of polymer 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, respectively. Changes in the pH of the sensing environment are detected by measuring the absorption spectrum of the new cladding in the sensing region of the optical fiber.

000004939 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004939 653__ $$apH sensing, fiber optic chemical sensing, infrastructure health monitoring, corrosion, evanescent wave sensor

000004939 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004939 720__ $$aGhandehari, Masoud$$iVimer, Cristian S.
000004939 8560_ $$ffischerc@itam.cas.cz
000004939 8564_ $$s127659$$uhttps://invenio.itam.cas.cz/record/4939/files/585.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004939 962__ $$r4594
000004939 980__ $$aPAPER