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Abstract:

Recent advances in the comprehension of the growth dynamics of colloidal crystal films opens the door to conscious design of experiments aiming at fabricating lattices in which the density of intrinsic defects is minimized. Since such imperfections have a dramatic effect on scattered light of wavelength smaller than the lattice constant, the evaluation of the experimental optical response at those energy ranges, based on the comparison to rigorous calculations, is identified as the most sensitive guide to accurately evaluate the progress towards the actual realization of defect free colloidal crystals. The importance of the existence of a certain distortion becomes particularly relevant at the above mentioned energy range. We have thoroughly analyzed the effect of fine structural features on the optical response to conclude that, rather than the generally assumed FCC lattice of spheres, opal films are better approximated by a rhombohedral assembly of distorted colloids. Interparticle distance of actual colloidal crystals coincides with the expected diameter for spheres belonging to the same close-packed (111) plane but differs significantly in directions oblique to the [111] one. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Registro:

Documento: Conferencia
Título:Toward a full understanding of the growth dynamics, optical response, and crystalline structure of self-assembled photonic colloidal crystal films
Autor:Lozano, G.; Dorado, L.A.; Depine, R.A.; Míguez, H.R.
Ciudad:Brussels
Filiación:Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain
Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:diffraction; growth dynamics; high energy; lattice distortion; opal films; optical response; three dimensional photonic crystals; Growth dynamics; High energy; Lattice distortions; Opal films; Optical response; three dimensional photonic crystals; Colloids; Crystal structure; Defects; Design of experiments; Diffraction; Dynamics; High energy physics; Photonic crystals; Photonic devices; Plastic films; Three dimensional; Optical films
Año:2010
Volumen:7713
DOI: http://dx.doi.org/10.1117/12.853435
Título revista:Photonic Crystal Materials and Devices IX
Título revista abreviado:Proc SPIE Int Soc Opt Eng
ISSN:0277786X
CODEN:PSISD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v7713_n_p_Lozano

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Citas:

---------- APA ----------
Lozano, G., Dorado, L.A., Depine, R.A. & Míguez, H.R. (2010) . Toward a full understanding of the growth dynamics, optical response, and crystalline structure of self-assembled photonic colloidal crystal films. Photonic Crystal Materials and Devices IX, 7713.
http://dx.doi.org/10.1117/12.853435
---------- CHICAGO ----------
Lozano, G., Dorado, L.A., Depine, R.A., Míguez, H.R. "Toward a full understanding of the growth dynamics, optical response, and crystalline structure of self-assembled photonic colloidal crystal films" . Photonic Crystal Materials and Devices IX 7713 (2010).
http://dx.doi.org/10.1117/12.853435
---------- MLA ----------
Lozano, G., Dorado, L.A., Depine, R.A., Míguez, H.R. "Toward a full understanding of the growth dynamics, optical response, and crystalline structure of self-assembled photonic colloidal crystal films" . Photonic Crystal Materials and Devices IX, vol. 7713, 2010.
http://dx.doi.org/10.1117/12.853435
---------- VANCOUVER ----------
Lozano, G., Dorado, L.A., Depine, R.A., Míguez, H.R. Toward a full understanding of the growth dynamics, optical response, and crystalline structure of self-assembled photonic colloidal crystal films. Proc SPIE Int Soc Opt Eng. 2010;7713.
http://dx.doi.org/10.1117/12.853435