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Remote Sensing of Near Neutral pH Levels

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Book cover Optical Phenomenology and Applications

Part of the book series: Smart Sensors, Measurement and Instrumentation ((SSMI,volume 28))

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Abstract

Fiber optic pH sensors, based on evanescent-wave spectroscopy, are demonstrated for short length distributed chemical sensing in civil infrastructure applications. The fiber sensor was made by removing portions of the poly (-methyl methacrylate) (PMMA) cladding of a plastic clad silica (PCS) optical fiber. The cladding was subsequently replaced with a thin film of PMMA doped with a pH sensitive dye (Methyl Red, Thymolphtalein, Thymol Blue). The change in the pH of the analyte is detected by sending light through the fiber while measuring the absorption spectrum of the embedded sensor molecule.

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Authors and Affiliations

  1. New York University, Six Metrotech Center, Brooklyn, NY, 11201, USA

    Masoud Ghandehari

  2. Madsen Consulting Engineering, 175 Varick St #803, New York, NY, 10014, USA

    Cristian S. Vimer

Authors
  1. Masoud Ghandehari
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  2. Cristian S. Vimer
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Correspondence to Masoud Ghandehari .

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Ghandehari, M., Vimer, C.S. (2018). Remote Sensing of Near Neutral pH Levels. In: Optical Phenomenology and Applications . Smart Sensors, Measurement and Instrumentation, vol 28. Springer, Cham. https://doi.org/10.1007/978-3-319-70715-0_5

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  • DOI: https://doi.org/10.1007/978-3-319-70715-0_5

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-70714-3

  • Online ISBN: 978-3-319-70715-0

  • eBook Packages: EngineeringEngineering (R0)

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