Growth of 'dizzy dendrites' in a random field of foreign particles

László Gránásy, T. Pusztai, James A. Warren, Jack F. Douglas, T. Börzsönyi, Vincent Ferreiro

Research output: Contribution to journalArticle

122 Citations (Scopus)

Abstract

Microstructure plays an essential role in determining the properties of crystalline materials. A widely used method to influence microstructure is the addition of nucleating agents. Observations on films formed from clay-polymer blends indicate that participate additives, in addition to serving as nucleating agents, may also perturb crystal growth, leading to the formation of irregular dendritic morphologies. Here we describe the formation of these 'dizzy dendrites' using a phase-field theory, in which randomly distributed foreign particle inclusions perturb the crystallization by deflecting the tips of the growing dendrite arms. This mechanism of crystallization, which is verified experimentally, leads to a polycrystalline structure dependent on particle configuration and orientation. Using computer simulations we demonstrate that additives of controlled crystal orientation should allow for a substantial manipulation of the crystallization morphology.

Original languageEnglish
Pages (from-to)92-96
Number of pages5
JournalNature Materials
Volume2
Issue number2
DOIs
Publication statusPublished - Feb 2003

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dendrites
Crystallization
crystallization
microstructure
Microstructure
polymer blends
Polymer blends
Crystal growth
Crystal orientation
clays
crystal growth
manipulators
Clay
computerized simulation
inclusions
Crystalline materials
Computer simulation
configurations
crystals

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Growth of 'dizzy dendrites' in a random field of foreign particles. / Gránásy, László; Pusztai, T.; Warren, James A.; Douglas, Jack F.; Börzsönyi, T.; Ferreiro, Vincent.

In: Nature Materials, Vol. 2, No. 2, 02.2003, p. 92-96.

Research output: Contribution to journalArticle

Gránásy, László ; Pusztai, T. ; Warren, James A. ; Douglas, Jack F. ; Börzsönyi, T. ; Ferreiro, Vincent. / Growth of 'dizzy dendrites' in a random field of foreign particles. In: Nature Materials. 2003 ; Vol. 2, No. 2. pp. 92-96.
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