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2001

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18697

Sidebranching induced by external noise in solutal dendritic growth

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http://dx.doi.org/10.1103/PhysRevE.63.051602

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.

Subject

Interfícies (Ciències físiques), Nanotecnologia, Pel·lícules fines, Ciència dels materials

Subject (English)

Interfaces (Physical sciences), Nanotechnology, Thin films, Materials science

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

GONZÁLEZ CINCA, Ricard, et al. Sidebranching induced by external noise in solutal dendritic growth. Physical Review E. 2001. Vol. E63, num. 051602-1-051602-9. ISSN 1539-3755. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/18697

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