论文标题
主动物质的相称和挫败感对周期性基材的影响
Active Matter Commensuration and Frustration Effects on Periodic Substrates
论文作者
论文摘要
我们表明，耦合到周期性障碍阵列的自驱动颗粒表现出新型的活性物质同化效应，在布朗式极限中不存在。由于障碍物的大小在足够大的活动中变化，因此出现了一系列的相称效应，其中运动诱导的相分离会产生相应的结晶状态，而对于其他障碍物大小，我们发现沮丧或无定形状态。相应效应与六倍排序和最大簇大小的峰值有关。当将漂移力添加到系统中时，迁移率包含峰值和下降，类似于运输研究中发现的超导涡流和胶体颗粒中的相对效应。
We show that self-driven particles coupled to a periodic obstacle array exhibit novel active matter commensuration effects that are absent in the Brownian limit. As the obstacle size is varied for sufficiently large activity, a series of commensuration effects appear in which the motility induced phase separation produces commensurate crystalline states, while for other obstacle sizes we find frustrated or amorphous states. The commensuration effects are associated with peaks in the amount of six-fold ordering and the maximum cluster size. When a drift force is added to the system, the mobility contains peaks and dips similar to those found in transport studies for commensuration effects in superconducting vortices and colloidal particles.
