| Issue |
Europhys. Lett.
Volume 43, Number 3, August I 1998
|
|
|---|---|---|
| Page(s) | 248 - 254 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i1998-00348-5 | |
| Published online | 01 September 2002 | |
Efficiency of Brownian motors
1
Departamento de Física Atómica, Nuclear y Molecular, Universidad Complutense de Madrid - 28040-Madrid, Spain
2
Departamento de Física Aplicada I, Universidad Complutense de Madrid, 28040-Madrid, Spain
Received:
6
April
1998
Accepted:
12
June
1998
The efficiency of different types of Brownian motors is calculated analytically and numerically. We find that motors based on flashing ratchets present a low efficiency and an unavoidable entropy production. On the other hand, a certain class of motors based on adiabatically changing potentials, named reversible ratchets, exhibit a higher efficiency and the entropy production can be arbitrarily reduced.
PACS: 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 82.20.Mj – Non-equilibrium kinetics
© EDP Sciences, 1998
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