论文标题
自组装近地面状态：随机包装颗粒状球和立方体成晶体
Self-assembly near Ground State: Randomly Pack Granular Spheres and Cubes into Crystal
论文作者
论文摘要
颗粒颗粒的自组装在应用和基础研究中都引起了极大的兴趣。通常观察到，当随机堆积到容器中时，颗粒状颗粒形成无序结构，例如玻璃。由于颗粒是无处不在的，因此这种包装的自组装通常可以通过振动或剪切的能量输入。但是，我们在这里表明，在随机掉入时，特别是容器，单一球体和立方体可以自组装成完美的晶体。这是因为新颗粒的有利微晶体被现有粒子和边界协同的秩序结构堵塞。这种自组装方法尚未在文献中报道。这表明堆积结构无序的结构可能是由于内部结构与边界形成的结构之间的冲突所致。因此，弥合这种不一致可能是指导新兴地区各种颗粒自我组装的一般原则。
Self-assembly of granular particles is of great interest in both applied and basic research. It is commonly observed that when randomly packed into a container, granular particles form disordered structures like glass. As the particles are athermal, the self-assembly of such packings can normally be directed with energy input via vibration or shear. However, here we show that in particular containers, mono-sized spheres and cubes can self-assemble into perfect crystals when randomly dropped in. This is because the favourable microstates for new particles are jammed in the ordered structure by the existing particles and the boundary synergistically. Such a self-assembly method has not been reported in the literature. It indicates that disordered packing structure may result from the conflict between the internal structure and the structure shaped by the boundary. Therefore, to bridge such inconsistency could be a general principle for directing self-assembly for different kinds of particles in emerging areas.
