沉降驱动的表面熔化和结晶：粒子分辨研究
Surface melting and crystallisation driven by sedimentation: a particle resolved study
摘要：
我们研究了引力场的反转对近硬球形胶体的沉降和部分结晶悬浮液的影响。我们分析的结构变化，发生在熔化的结晶区域和重组和组装的沉积颗粒。通过与数值模拟的比较，我们访问的单粒子动力学，并确定五重对称和立方晶体结构之间的竞争的关键结构机制。随着使用粗粒度的，离散的模型，我们再现的动力学网络的反应支撑结晶和突出的主要微观转变。
英文摘要：
We investigate the effects of the reversal of the gravitational field onto a sedimented and partially crystallised suspension of nearly-hard sphere colloids. We analyse the structural changes that take place during the melting of the crystalline regions and the reorganisation and assembly of the sedimenting particles. Through a comparison with numerical simulation, we access the single-particle kinetics and identify the key structural mechanism in the competition between five-fold symmetric and cubic crystalline structures. With the use of a coarse-grained, discrete model, we reproduce the kinetic network of reactions underpinning crystallisation and highlight the main microscopic transitions.
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