Current reversals and synchronization in coupled ratchets
- Current reversal is an intriguing phenomenon that has been central to recent experimental and theoretical investigations of transport based on ratchet mechanism. By considering a system of two interacting ratchets, we demonstrate how the coupling can be used to control the reversals. In particular, we find that current reversal that exists in a single driven ratchet system can ultimately be eliminated with the presence of a second ratchet. For specific coupling strengths a current-reversal free regime has been detected. Furthermore, in the fully synchronized state characterized by the coupling threshold k(th), a specific driving amplitude a(opt) is found for which the transport is optimum.
| Author details: | Uchechukwu E. Vincent, Anatole Kenfack, Dharmapuri Vijayan Senthilkumar, Dieter Mayer, Jürgen KurthsORCiDGND |
|---|---|
| URL: | http://pre.aps.org/ |
| DOI: | https://doi.org/10.1103/Physreve.82.046208 |
| ISSN: | 1539-3755 |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2010 |
| Publication year: | 2010 |
| Release date: | 2017/03/25 |
| Source: | Physical Review E. - ISSN 1539-3755. - 82 (2010), 4, Art. 046208 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
| Peer review: | Referiert |
