| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7929338 | Optics Communications | 2015 | 7 Pages |
Abstract
Reflectance spectra at normal incidence were recorded from different latex applications during their film formation processes at ambient temperature. Besides oscillations in the reflected spectra due to two-wave interference phenomenon in an effective film, a clear asymmetric Fano-like resonance appeared during long periods of time in some of the latex films studied. We develop an optical model to explain all the observed interference phenomena and elucidate in simple terms the underlying mechanism of the observed Fano resonances. The model reproduces qualitatively very well all the features in the experimental reflectance spectra. We find that the Fano resonances arise due to the interference between the surface reflection and a Bragg reflection from self-assembled photonic crystals within the film.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
J.A. Olivares, J.M. Galván-Miyoshi, A. GarcÃa-Valenzuela, F.L.S. Cuppo, F. Zaldo, E.R. Méndez,