FBG Multifunctional pH Sensor - Monitoring the pH Rain in Cultural Heritage

Authors

  • Lorenzo Dinia Sapienza University of Rome
  • Fabio Mangini Sapienza University of Rome
  • Marco Muzi Sapienza University of Rome
  • Fabrizio Frezza Sapienza University of Rome

DOI:

https://doi.org/10.21014/acta_imeko.v7i3.560

Abstract

A new era of pollution requires an important focus on the conservation of archaeological sites and monuments. In the last years great efforts were required to develop various sensors for different tasks. The fiber Bragg grating (FBG) was one of the most studied thanks to the multitude of applications and the surprising performances. An original fiber optic sensor that combines the fiber Bragg gratings with a pH responsive polymer coating for monitoring the pH of the rains on critical and prestigious monuments is proposed. The core consists of four different materials, which makes the sensor very innovative and allowing it to reach a high sensitivity. In this study, the setup arrangement of the optical sensor is modeled with COMSOL Multiphysics (Wave Optics Module), based on the FEM (Finite Element Method) solver. Monitoring the pH of water can be used by experts to predict and control the corrosion phenomenon of specific materials, especially limestone and marble, thus scheduling the timely restoration.

Author Biographies

Lorenzo Dinia, Sapienza University of Rome

Department of Information Engineering, Electronics and Telecommunications

Fabio Mangini, Sapienza University of Rome

Department of Information Engineering, Electronics and Telecommunications

and

Santa Lucia Foundation

 

Marco Muzi, Sapienza University of Rome

Department of Information Engineering, Electronics and Telecommunications

and

Engineering Departmental Faculty, “Campus-Biomedico” University of Rome

Fabrizio Frezza, Sapienza University of Rome

Department of Information Engineering, Electronics and Telecommunications

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Published

2018-10-24

Issue

Vol. 7 No. 3 (2018)

Section

Research Papers

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