Pattern formation in crystal growth under parabolic shear flow

Details Pattern formation in crystal growth under parabolic shear flow Pattern formation in crystal growth under parabolic shear flow

2003-06-03

arxiv.org/abs/cond-mat/0306055v1

Phys. Rev. E. 68, 021603 (2003)

Physics

Condensed Matter

Materials Science

30 pages, 4 figures

Scientific paper

10.1103/PhysRevE.68.021603

Morphological instability of the solid-liquid interface occuring in a crystal growing from an undercooled thin liquid being bounded on one side by a free surface and flowing down inclined plane is investigated by a linear stability analysis under shear flow. It is found that restoring forces due to gravity and surface tension is important factor for stabilization of the solid-liquid interface on long length scales. This is a new stabilizing effect different from the Gibbs-Thomson effect. A particular long wavelength mode of about 1 cm of wavy pattern observed on the surface of icicles covered with thin layer of flowing water is obtained from the dispersion relation including the effect of flow and restoring forces.

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