Holographic photopolymer materials: nonlocal polymerization-driven diffusion under nonideal kinetic conditions
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Título: | Holographic photopolymer materials: nonlocal polymerization-driven diffusion under nonideal kinetic conditions |
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Autor/es: | Kelly, John V. | O'Neill, Feidhlim T. | Sheridan, John T. | Neipp, Cristian | Gallego, Sergi | Ortuño, Manuel |
Grupo/s de investigación o GITE: | Holografía y Procesado Óptico |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | University College Dublin. Department of Electronic and Electrical Engineering |
Palabras clave: | Holography | Holographic recording materials | Photopolymers |
Área/s de conocimiento: | Óptica | Física Aplicada |
Fecha de creación: | 23-ene-2004 |
Fecha de publicación: | 1-feb-2005 |
Editor: | Optical Society of America |
Cita bibliográfica: | KELLY, John V., et al. "Holographic photopolymer materials: nonlocal polymerization-driven diffusion under nonideal kinetic conditions". Journal of the Optical Society of America B. Vol. 22, No. 2 (Febr. 2005). ISSN 0740-3224, pp. 407-416 |
Resumen: | The kinetics of photosensitive polymer holographic recording materials are examined assuming a material that exhibits nonideal kinetic behavior. Previously, a linear relationship between monomer concentration and polymerization was assumed when deriving the nonlocal polymer-driven diffusion (NPDD) model. This is consistent with ideal kinetic conditions in which chain termination is governed by a bimolecular process. However, these models have been reported to disagree with experimental results. In a limiting case of nonideal kinetics it is assumed that primary termination is dominant. In this case the NPDD model must be modified to incorporate a quadratic relationship between the monomer concentration and the polymerization rate. By use of a multiharmonic expansion method of solution the predictions of ideal (bimolecular or linear) and nonideal (primary or quadratic) kinetic models are compared. By using these models we carried out numerical fits to experimental growth curves of gratings recorded in an acrylamide-based cross-linked photopolymer system. Superior fits are achieved by use of the primary termination model. Physical parameters such as the diffusion constant are extracted and compared with results previously reported in the literature. |
Patrocinador/es: | The authors acknowledge the support of Enterprise Ireland, the Research Innovation Fund and Science Foundation Ireland, through the Basic Research Program. F. T. O’Neill currently holds an Embark Initiative postdoctoral research fellowship operated by the Irish Research Council for Science, Engineering and Technology. |
URI: | http://hdl.handle.net/10045/9383 |
ISSN: | 0740-3224 (Print) | 1520-8540 (Online) |
DOI: | 10.1364/JOSAB.22.000407 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | This paper was published in JOSA B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-2-407. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
Revisión científica: | si |
Aparece en las colecciones: | INV - GHPO - Artículos de Revistas |
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