Now showing items 1-2 of 2

    • A fiber optic ammonia sensor using a universal pH indicator 

      Rodríguez Rodríguez, Adolfo Josué; Ruiz Zamarreño, Carlos Upna; Matías Maestro, Ignacio Upna; Arregui San Martín, Francisco Javier Upna; Cruz, René; May Arrioja, Daniel A. (MDPI, 2014)   Artículo / Artikulua  OpenAccess
      A universal pH indicator is used to fabricate a fiber optic ammonia sensor. The advantage of this pH indicator is that it exhibits sensitivity to ammonia over a broad wavelength range. This provides a differential response, ...
    • Gasohol quality control for real time applications by means of a multimode interference fiber sensor 

      Rodríguez Rodríguez, Adolfo Josué; Baldovino Pantaleón, Óscar; Cruz, René; Ruiz Zamarreño, Carlos Upna; Matías Maestro, Ignacio Upna; May Arrioja, Daniel A. (MDPI, 2014)   Artículo / Artikulua  OpenAccess
      In this work we demonstrate efficient quality control of a variety of gasoline and ethanol (gasohol) blends using a multimode interference (MMI) fiber sensor. The operational principle relies on the fact that the addition ...