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Proceedings Paper

pH biosensor with plastic fiber optic doped with carbone nanotubes used sol-gel technique
Author(s): 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
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Paper 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.

Paper Details

Date Published: 14 October 2010
PDF: 4 pages
Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78391C (14 October 2010); doi: 10.1117/12.867005
Show Author Affiliations
E. Alvarado-Méndez, Univ. de Guanajuato (Mexico)
S. D. Flores-Rangel, Univ. de Guanajuato (Mexico)
D. Hernández-Cruz, Univ. Autónoma de Chiapas (Mexico)
M. Trejo-Durán, Univ. de Guanajuato (Mexico)
J. A. Andrade-Lucio, Univ. de Guanajuato (Mexico)
R. Rojas-Laguna, Univ. de Guanajuato (Mexico)
J. M. Estudillo-Ayala, Univ. de Guanajuato (Mexico)
E. Vargas-Rodríguez, Univ. de Guanajuato (Mexico)
R. I. Mata Chávez, Univ. de Guanajuato (Mexico)
M. G. García-Hernández, Univ. de Guanajuato (Mexico)

Published in SPIE Proceedings Vol. 7839:
2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2)
Juan Hernández-Cordero; Ismael Torres-Gómez; Alexis Méndez, Editor(s)

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