pH biosensor with plastic fiber optic doped with carbone nanotubes used sol-gel technique

E. Alvarado-Méndez; S. D. Flores-Rangel; D. Hernández-Cruz; M. Trejo-Durán; J. A. Andrade-Lucio; R. Rojas-Laguna; J. M. Estudillo-Ayala; E. Vargas-Rodríguez; R. I. Mata Chávez; M. G. García-Hernández

doi:10.1117/12.867005

14 October 2010 pH biosensor with plastic fiber optic doped with carbone nanotubes used sol-gel technique

E. Alvarado-Méndez, S. D. Flores-Rangel, D. Hernández-Cruz, M. Trejo-Durán, J. A. Andrade-Lucio, R. Rojas-Laguna, J. M. Estudillo-Ayala, E. Vargas-Rodríguez, R. I. Mata Chávez, M. G. García-Hernández

Author Affiliations +

Proceedings Volume 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2); 78391C (2010) https://doi.org/10.1117/12.867005
Event: Workshop on Specialty Optical Fibers and Their Applications (WSOF-10), 2010, Oaxaca, Mexico

Abstract

We prepare optrodes of fiber optic plastic with sol-gel technique. Suitable concentration of carbone nanotubes (CNTs), phenol red, bromophenol blue and cresol red, design optrodes with fiber optic plastic. The surface charge of silica and the refractive index, which play an important roll on the fiber, modifies the conditions of light propagation into the plastic optical fiber. We use the transmittance to measure the pH of a solution or fluid in a range between 3 and 9.

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E. Alvarado-Méndez, S. D. Flores-Rangel, D. Hernández-Cruz, M. Trejo-Durán, J. A. Andrade-Lucio, R. Rojas-Laguna, J. M. Estudillo-Ayala, E. Vargas-Rodríguez, R. I. Mata Chávez, and M. G. García-Hernández "pH biosensor with plastic fiber optic doped with carbone nanotubes used sol-gel technique", Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78391C (14 October 2010); https://doi.org/10.1117/12.867005

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