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Title: Faceting and branching in 2D crystal growth
Authors: Tegze, G
Toth, GI
Granasy, L
Publication Date: 2011
Publisher: American Physical Society
Citation: Physical Review Letters 106(19): 195502, May 2011
Abstract: Using atomic scale time-dependent density functional calculations we confirm that both diffusion-controlled and diffusionless crystallization modes exist in simple 2D systems. We provide theoretical evidence that a faceted to nonfaceted transition is coupled to these crystallization modes, and faceting is governed by the local supersaturation at the fluid-crystalline interface. We also show that competing modes of crystallization have a major influence on mesopattern formation. Irregularly branched and porous structures are emerging at the crossover of the crystallization modes. The proposed branching mechanism differs essentially from dendritic fingering driven by diffusive instability.
Description: The official published version of the Article can be accessed from the link below - Copyright @ 2011 APS
Sponsorship: This work has been supported by the EU FP7 Collaborative Project ENSEMBLE under Grant Agreement NMP4-SL-2008-213669 and by the Hungarian Academy of Sciences under Contract No. OTKA-K-62588.
ISSN: 0031-9007
Appears in Collections:Brunel Centre for Advanced Solidification Technology (BCAST)

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