Theory of Soft Condensed Matter, Université du Luxembourg, L-1511 Luxembourg, Luxembourg.
J Chem Phys. 2012 Jan 28;136(4):044702. doi: 10.1063/1.3679385.
We present a computer simulation study on crystal nucleation and growth in supersaturated suspensions of mono-disperse hard spheres induced by a triangular lattice substrate. The main result is that compressed substrates are wet by the crystalline phase (the crystalline phase directly appears without any induction time), while for stretched substrates we observe heterogeneous nucleation. The shapes of the nucleated crystallites fluctuate strongly. In the case of homogeneous nucleation amorphous precursors have been observed [T. Schilling et al., Phys. Rev. Lett. 105(2), 025701 (2010)]. For heterogeneous nucleation we do not find such precursors. The fluid is directly transformed into highly ordered crystallites.
我们提出了一个关于在三角形晶格基底诱导下单分散硬球过饱和悬浮液中晶体成核和生长的计算机模拟研究。主要结果是，压缩基底被晶相润湿（晶相直接出现，没有任何诱导时间），而对于拉伸基底，我们观察到异质成核。成核晶的形状波动很大。在均匀成核的情况下，已经观察到非晶前驱体[T. Schilling 等人，物理评论快报 105（2），025701（2010）]。对于异质成核，我们没有发现这样的前驱体。流体直接转化为高度有序的晶体。
