Coulomb Friction Driving Brownian Motors
文献类型：期刊论文
| 作者 | Manacorda, A ; Puglisi, A ; Sarracino, A |
| 刊名 | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 62期号:4页码:505-513 |
| 关键词 | DRY FRICTION MOTION PARTICLES RATCHETS EQUATION |
| ISSN号 | 0253-6102 |
| 通讯作者 | Manacorda, A (reprint author), Univ Roma La Sapienza, Dipartimento Fis, P A Moro 2, I-00185 Rome, Italy. |
| 英文摘要 | We review a family of models recently introduced to describe Brownian motors under the influence of Coulomb friction, or more general non-linear friction laws. It is known that, if the heat bath is modeled as the usual Langevin equation (linear viscosity plus white noise), additional non-linear friction forces are not sufficient to break detailed balance, i.e. cannot produce a motor effect. We discuss two possibile mechanisms to elude this problem. A first possibility, exploited in several models inspired to recent experiments, is to replace the heat bath's white noise by a "collisional noise", that is the effect of random collisions with an external equilibrium gas of particles. A second possibility is enlarging the phase space, e.g. by adding an external potential which couples velocity to position, as in a Klein Kramers equation. In both cases, non-linear friction becomes sufficient to achieve a non-equilibrium steady state and, in the presence of an even small spatial asymmetry, a motor effect is produced. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Granular-Chaos project - Italian MIUR under the FIRB-IDEAS [RBID08Z9JE] |
| 语种 | 英语 |
| WOS记录号 | WOS:000345826400008 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15634]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Manacorda, A,Puglisi, A,Sarracino, A. Coulomb Friction Driving Brownian Motors[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2014,62(4):505-513. |
| APA | Manacorda, A,Puglisi, A,&Sarracino, A.(2014).Coulomb Friction Driving Brownian Motors.COMMUNICATIONS IN THEORETICAL PHYSICS,62(4),505-513. |
| MLA | Manacorda, A,et al."Coulomb Friction Driving Brownian Motors".COMMUNICATIONS IN THEORETICAL PHYSICS 62.4(2014):505-513. |
入库方式： OAI收割
来源：理论物理研究所
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