Traveling and Resting Crystals in Active Systems

被引：101

作者：

Menzel, Andreas M. ^{[1
]}

Loewen, Hartmut ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Theoret Phys Weiche Mat 2, D-40225 Dusseldorf, Germany

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 05期

关键词：

BACTERIA;

D O I：

10.1103/PhysRevLett.110.055702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A microscopic field theory for crystallization in active systems is proposed which unifies the phase-field-crystal model of freezing with the Toner-Tu theory for self-propelled particles. A wealth of different active crystalline states are predicted and characterized. In particular, for increasing strength of self-propulsion, a transition from a resting crystal to a traveling crystalline state is found where the particles migrate collectively while keeping their crystalline order. Our predictions, which are verifiable in experiments and in particle-resolved computer simulations, provide a starting point for the design of new active materials. DOI: 10.1103/PhysRevLett.110.055702

引用

页数：5

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