10-14 July 2016
Africa/Johannesburg timezone
Paper Submission is Open!! Registration for CCP2016 Conference will be open at the registration desk @ St. George's Hotel reception area on Sunday 10 July / Welcome Dinner at 18:30 SAST.

Dynamic Modelling on the Crystallization of Mono-sized Cubical Particles under Mechanical Vibrations

11 Jul 2016, 11:00
Oral Presentation Parallel Track B


Prof. Xizhong An (Northeastern University)

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The realization of the densest possible geometrical ordering is one of the most fundamental questions in self-assembly of particles. In this work, the crystallization process of single crystal (disorder-order transition) formed by mono-sized cubical particles under three-dimensional (3D) mechanical vibrations is investigated by the dynamical simulation of discrete element method (DEM). The efficiency of crystallization in various vibration conditions and different shaped containers is analyzed and compared. The evolution of macro property such as packing density and micro properties such as coordination number (CN), radial distribution function (RDF), particle orientation and inter-particle forces during vibrated crystallization are characterized. The results show that the perfect single crystal of mono-sized cubical particles can be reproduced if the 3D vibration conditions are properly controlled. The distribution of particles in the crystallization process is also affected by the container walls, where the crystallization of particles initially emerges. In particular, the disorder-to-order transition is demonstrated as an entropy driven process under the entropic effects of particle shape and geometrical confinement of container walls. These findings can be helpful for our general understanding of self-assembly problems.

Primary author

Mr Yongli Wu (Monash University)


Prof. Aibing Yu (Monash University) Prof. Xizhong An (Northeastern University)

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