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Título:
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Adsorption of water on porous Vycor glass studied by ellipsometry
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Autores:
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Álvarez Herrero, Alberto ;
López Heredero, Raquel ;
Levy, David ;
Bernabeu Martínez, Eusebio
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Tipo de documento:
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texto impreso
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Editorial:
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The Optical Society Of America, 2001-02-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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The variation of the optical properties of porous Vycor glass (Corning, Model 7930) under different relative-humidity conditions was studied. The adsorption of water into the glass pores was investigated with spectroscopic ellipsometry. The change of the refractive index was ?n ? 0.04 between 5% and 90% relative humidity. A linear relation between the ellipsometer parameter tan ?, the amount of water adsorbed in the glass pores, and information about the pore-size distributions was established. The results are in accord with the values obtained from N2 isotherms, transmission electron microscope micrographs, and the manufacturer’s specifications (radius of ?20 Å). The possibility of using this material as a transducer for implementation in a fiber-optic sensor to measure humidity was evaluated.
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En línea:
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https://eprints.ucm.es/id/eprint/26791/1/Bernabeu%2CE77libre.pdf
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