Ostwald ripening: an approach with dynamical systems



Título del documento: Ostwald ripening: an approach with dynamical systems
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312426
ISSN: 1516-1439
Autores: 1
Instituciones: 1Comissao Nacional de Energia Nuclear, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais. Brasil
Año:
Periodo: Jul
Volumen: 2
Número: 3
Paginación: 139-143
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Descriptivo
Resumen en inglés This approach assumes three functions independently acting on a set of microparticles. The first one, w1, concerns re-distribution of mass to decrease the surface energy. The second one, w2, concerns re-distribution of mass to increase the entropy of the microparticle set. The third one, w3, is a further re-distribution of mass that vanishes a microparticle. Once vanished, its mass is distributed among its neighbors. w1 and w3 release energy, whereas w2 absorbs energy. Part of the energy released should be available to sustain w2. The action frequency of w1, w2, and w3, the amount of mass exchanged in each iteraction, the fraction of released energy available to sustain w2, and the size of a vanishing microparticle can be varied. As the dynamical system formed by w1, w2, and w3 act on an initial microparticle set, it is observed an evolution resembling the Ostwald ripening concerning steady-state size distribution and microparticle growth
Disciplinas: Ingeniería,
Química
Palabras clave: Ingeniería de materiales,
Fisicoquímica y química teórica,
Maduración,
Propiedades fisicoquímicas,
Simulación
Keyword: Engineering,
Chemistry,
Materials engineering,
Physical and theoretical chemistry,
Ripening,
Physicochemical properties,
Simulation
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