期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 30, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-648X/aa9c5f
关键词
active matter; clogging; negative differential mobility
资金
- NNSA of the US DoE at LANL [DE-AC52-06NA25396]
Using simulations, we examine the average velocity as a function of applied drift force for active matter particles moving through a random obstacle array. We find that for low drift force, there is an initial flow regime where the mobility increases linearly with drive, while for higher drift forces a regime of negative differential mobility appears in which the velocity decreases with increasing drive due to the trapping of active particles behind obstacles. A fully clogged regime exists at very high drift forces when all the particles are permanently trapped behind obstacles. We find for increasing activity that the overall mobility is nonmonotonic, with an enhancement of the mobility for small levels of activity and a decrease in mobility for large activity levels. We show how these effects evolve as a function of disk and obstacle density, active run length, drift force, and motor force.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据