Degenerate states, emergent dynamics and fluid mixing by magnetic rotors
文献类型：期刊论文
| 作者 | Kawai, Takuma; Matsunaga, Daiki; Meng, Fanlong2,3 ; Yeomans, Julia M.; Golestanian, Ramin2,4
|
| 刊名 | SOFT MATTER
 |
| 出版日期 | 2020 |
| 卷号 | 16期号:28页码:6484-6492 |
| ISSN号 | 1744-683X |
| DOI | 10.1039/d0sm00454e |
| 英文摘要 | We investigate the collective motion of magnetic rotors suspended in a viscous fluid under a uniform rotating magnetic field. The rotors are positioned on a square lattice, and low Reynolds hydrodynamics is assumed. For a 3 x 3 array of magnets, we observe three characteristic dynamical patterns as the external field strength is varied: a synchronized pattern, an oscillating pattern, and a chessboard pattern. The relative stability of these depends on the competition between the energy due to the external magnetic field and the energy of the magnetic dipole-dipole interactions among the rotors. We argue that the chessboard pattern can be understood as an alternation in the stability of two degenerate states, characterized by striped and spin-ice configurations, as the applied magnetic field rotates. For larger arrays, we observe propagation of slip waves that are similar to metachronal waves. The rotor arrays have potential as microfluidic devices that can mix fluids and create vortices of different sizes. |
| 学科主题 | Chemistry ; Materials Science ; Physics ; Polymer Science |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27207]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Max Planck Inst Dynam & Self Org MPIDS, D-37077 Gottingen, Germany 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3PU, England 4.Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan |
| 推荐引用方式 GB/T 7714 | Kawai, Takuma,Matsunaga, Daiki,Meng, Fanlong,et al. Degenerate states, emergent dynamics and fluid mixing by magnetic rotors[J]. SOFT MATTER,2020,16(28):6484-6492. |
| APA | Kawai, Takuma,Matsunaga, Daiki,Meng, Fanlong,Yeomans, Julia M.,&Golestanian, Ramin.(2020).Degenerate states, emergent dynamics and fluid mixing by magnetic rotors.SOFT MATTER,16(28),6484-6492. |
| MLA | Kawai, Takuma,et al."Degenerate states, emergent dynamics and fluid mixing by magnetic rotors".SOFT MATTER 16.28(2020):6484-6492. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。