Adsorption of water on porous Vycor glass studied by ellipsometry
| dc.contributor.author | Álvarez Herrero, Alberto | |
| dc.contributor.author | López Heredero, Raquel | |
| dc.contributor.author | Levy, David | |
| dc.contributor.author | Bernabeu Martínez, Eusebio | |
| dc.date.accessioned | 2023-06-20T19:05:11Z | |
| dc.date.available | 2023-06-20T19:05:11Z | |
| dc.date.issued | 2001-02-01 | |
| dc.description | © Optical Society of America. The authors gratefully acknowledge the contribution of S. Martín Barbero for the adsorption measurements of N_2 and P. Valles González for the TEM micrographs. We are much indebted to A. Pérez Masia and A. Ruiz Paniego for enlightening discussions about adsorption in porous materials. We are grateful to H. Guerrero for his support of this study. This research has been partially supported by the Comisión Interministerial de Ciencia y Tecnología (CICYT), project ESP98-1332-C04-04. | |
| dc.description.abstract | 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 Δn ∼ 0.04 between 5% and 90% relative humidity. A linear relation between the ellipsometer parameter tan Ψ, 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. | |
| dc.description.department | Depto. de Óptica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Comisión Interministerial de Ciencia y Tecnología (CICYT) | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/26791 | |
| dc.identifier.doi | 10.1364/AO.40.000527 | |
| dc.identifier.issn | 1559-128X | |
| dc.identifier.officialurl | http://dx.doi.org/10.1364/AO.40.000527 | |
| dc.identifier.relatedurl | http://www.opticsinfobase.org | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/59227 | |
| dc.issue.number | 4 | |
| dc.journal.title | Applied Optics | |
| dc.language.iso | eng | |
| dc.page.final | 532 | |
| dc.page.initial | 527 | |
| dc.publisher | The Optical Society Of America | |
| dc.relation.projectID | ESP98-1332-C04-04 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 535 | |
| dc.subject.keyword | Neutron-Scattering | |
| dc.subject.keyword | Surface | |
| dc.subject.keyword | Layers | |
| dc.subject.keyword | Gases | |
| dc.subject.ucm | Óptica (Física) | |
| dc.subject.unesco | 2209.19 Óptica Física | |
| dc.title | Adsorption of water on porous Vycor glass studied by ellipsometry | |
| dc.type | journal article | |
| dc.volume.number | 40 | |
| dcterms.references | 1. A. Hohr, H. B. Neumann, P. W. Schmidt, P. Pfeifer, D. Avnir, “Fractal surface and cluster structure of controlled-pore glasses and Vycor porous glass as revealed by small-angle x-ray and neutron scattering”, Phys. Rev. B 38, 1462–1467 (1988). 2. M. J. Benhan, J. C. Cook, J. C. Li, D. K. Ross, “Small-angle neutron scattering study of adsorbed water in porous Vycor glass: supercooling phase transition and interfacial structure”, Phys. Rev. B 39, 633–636 (1989). 3. S. K. Das, R. Suryanarayanan, “Structural, optical, and electrical properties of Pb1-xYbxTe films (0 < x < 0.25)”, J. Appl. Phys. 66, 4843–4845 (1989). 4. M. D. Dvorak, B. L. Justus, D. K. Gaskill, D. G. Hendersho, “Nonlinear absorption and refraction of quantum confined InP nanocrystals grown in porous glass”, Appl. Phys. Lett. 66, 804–806 (1995). 5. T. E. Huber, H. L. Tsou, “Temperature-dependent adsorption of nitrogen on porous Vycor glass”, Phys. Rev. B 57, 4991–4994 (1998). 6. T. E. Huber, C. A. Huber, “Adsorption of hydrogen on porous Vycor glass”, J. Low Temp. Phys. 80, 315–323 (1990). 7. B. Abeles, L. F. Chen, J. W. Johnson, J. M. Drake, “Capillary condensation and surface flow in microporous Vycor glass”, Isr. J. Chem. 31, 99–106 (1991). 8. Y. Hirama, T. Takahashi, M. Hino, T. Sato, “Studies of water adsorbed in porous Vycor glass”, J. Colloid Interface Sci. 184, 349–359 (1996). 9. P. Pissis, J. Laudat, D. Daoukaki, A. Kyritsis, “Dynamic properties of water in porous Vycor glass studied by dielectric techniques”, J. Non-Cryst. Solids 171, 201–207 (1994). 10. Special issue on the Second International Conference on Spectroscopic Ellipsometry, Thin Solid Films313–314 (1998). 11. ES-4G User’s Manual (SOPRA SA., 26 rue Pierre Joigneaux, F92270 Bois-Colombes, France). 12. ASAP 2010 Analyzer User’s Manual (Micromeritics, Norcross, Ga. 20093-1877). 13. A. Alvarez-Herrero, A. J. Fort, H. Guerrero, E. Bernabeu, “Ellipsometric characterization and influence of relative humidity on TiO2 layers optical properties”, Thin Solid Films 349, 212–219 (1999). 14. S. Brunauer, L. S. Deming, W. S. Deming, E. Teller, “On a theory of the van der Waals adsorption of gases”, J. Am. Chem Soc. 62, 1723–1732 (1940). 15. S. Brunauer, P. H. Emmett, E. Teller, “Adsorption of gases in multimolecular layers”, J. Am. Chem. Soc. 60, 309–319 (1938). 16. S. J. Gregg, K. S. W. Sing, Adsorption, Surface Area, and Porosity (Academic, New York, 1997). 17. H. G. Tompkins, A User’s Guide to Ellipsometry (Academic, New York, 1993). 18. R. M. A. Azzam, N. N. Bashara, Ellipsometry and Polarized Light (North-Holland, Amsterdam, 1977). | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | e77a30e7-98fe-421b-8010-077246ffcbdf | |
| relation.isAuthorOfPublication.latestForDiscovery | e77a30e7-98fe-421b-8010-077246ffcbdf |
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