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http://hdl.handle.net/2445/18697
Title: | Sidebranching induced by external noise in solutal dendritic growth |
Author: | González Cinca, Ricard Ramírez de la Piscina, Laureano Casademunt i Viader, Jaume Hernández Machado, Aurora |
Keywords: | Interfícies (Ciències físiques) Nanotecnologia Pel·lícules fines Ciència dels materials Interfaces (Physical sciences) Nanotechnology Thin films Materials science |
Issue Date: | 2001 |
Publisher: | The American Physical Society |
Abstract: | We have studied sidebranching induced by fluctuations in dendritic growth. The amplitude of sidebranching induced by internal (equilibrium) concentration fluctuations in the case of solidification with solutal diffusion is computed. This amplitude turns out to be significantly smaller than values reported in previous experiments. The effects of other possible sources of fluctuations (of an external origin) are examined by introducing nonconserved noise in a phase-field model. This reproduces the characteristics of sidebranching found in experiments. Results also show that sidebranching induced by external noise is qualitatively similar to that of internal noise, and it is only distinguished by its amplitude. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.63.051602 |
It is part of: | Physical Review E, 2001, vol. E63, p. 051602-1-051602-9 |
URI: | http://hdl.handle.net/2445/18697 |
Related resource: | http://dx.doi.org/10.1103/PhysRevE.63.051602 |
ISSN: | 1539-3755 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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