论文标题
高密度方案中粒子形状和远程相互作用之间的耦合
Coupling between particle shape and long-range interaction in the high-density regime
论文作者
论文摘要
通过使用远程相互作用的多边形，我们通过实验探测粒子形状和远程相互作用之间的耦合。对于两个典型的空间填充多边形，正方形和三角形，我们找到了两种类型的耦合模式，主要控制结构形成。具体而言，正方形的旋转顺序带来了晶格变形，该晶格变形在高密度状态下会产生六角形到肉眼的过渡，而三角形的比对引入了较大的几何挫败感，从而导致订单到订单的过渡。此外，两种耦合模式导致两个系统的大小“内部粗糙度”，因此主要控制其结构放松。因此，我们的研究为远程相互作用效应与高密度效果之间的耦合提供了物理图片，以前未探索。
By using long-range interacting polygons, we experimentally probe the coupling between particle shape and long-range interaction. For two typical space-filling polygons, square and triangle, we find two types of coupling modes that predominantly control the structure formation. Specifically, the rotational ordering of squares brings a lattice deformation that produces a hexagonal-to-rhombic transition in the high-density regime, whereas the alignment of triangles introduces a large geometric frustration that causes an order-to-disorder transition. Moreover, the two coupling modes lead to small and large "internal roughness" of the two systems, and thus predominantly control their structure relaxations. Our study thus provides a physical picture to the coupling between long-range interaction effect and short-range shape effect in the high-density regime unexplored before.
