Measurement of CO2 using refractometric fiber optic sensors

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2010

Autores

Gouveia, C (Autor) Outra; Markovics, A (Autor) Outra; Baptista, JM (Autor) Outra; Kovacs, B (Autor) Outra; Jorge, PAS (Autor) FCUP

Ata de Conferência Internacional

Título: Advances in Sensors, Signals and Materials - 3rd WSEAS International Conference on Sensors and Signals, SENSIG'10, 3rd WSEAS International Conference on Materials Science, MATERIALS'10

Páginas: 169-173

3rd WSEAS International Conference on Sensors and Signals, SENSIG'10, 3rd WSEAS International Conference on Materials Science, MATERIALS'10

Faro, 3 November 2010 through 5 November 2010

Indexação

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-007-Z24

Abstract (EN): An indicator free optical fiber sensor for determination of carbon dioxide is presented. The sensing layer is based on the acid-basic equilibrium of phenol and of its derivative p-nitro-phenol that, in the presence of CO2, are prone to protonation introducing refractive index changes. The new sensitive layer is characterized and tested in different refractometric fiber optic sensor configurations. Using a fiber based interferometric setup, a CO 2 dependent refractive index change of ~0.05 RIU is observed, in the 10%-90% CO2 concentration range, demonstrating the membrane viability. Preliminary results are presented for an all-fiber LPG-based carbon dioxide sensor.

Idioma: Inglês

Tipo (Avaliação Docente): Científica