منابع مشابه
Brownian motors
Peter Hänggi1,∗, Fabio Marchesoni2, and Franco Nori3,4 1 Universität Augsburg, Institut für Physik, Universitätsstrasse 1, 86135 Augsburg, Germany 2 Dipartimento di Fisica, Università di Camerino, 62032 Camerino, Italy 3 Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan 4 Center for Theoretical Physics, Department of Physics, U...
متن کاملCoupled Brownian Motors
Abs t rac t . A unifying view on several astonishing effects induced by state dependent, uncorrelated fluctuations (multipficative white noise) is presented. The main emphasis of our introductory discussion is put on the basic physical mechanisms at work in a white noise driven "pulsating ratchet", noise-induced non-equilibrium phase transitions, and their synthesis in the form of coupled Brown...
متن کاملEfficiency of Brownian motors
– 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 arbitrari...
متن کاملPerformance characteristics of Brownian motors.
Brownian motors are nonequilibrium systems that rectify thermal fluctuations to achieve directed motion, using spatial or temporal asymmetry. We provide a tutorial introduction to this basic concept using the well-known example of a flashing ratchet, discussing the micro- to nanoscopic scale on which such motors can operate. Because of the crucial role of thermal noise, the characterization of ...
متن کاملClassical and quantum Brownian motors
Peter Hänggi∗1, Fabio Marchesoni2, and Franco Nori3,4 1 Universität Augsburg, Institut für Physik, Universitätsstrasse 1, 86135 Augsburg, Germany 2 Dipartimento di Fisica, Università di Camerino, 62032 Camerino, Italy 3 Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan 4 Center for Theoretical Physics, Department of Physics, Un...
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ژورنال
عنوان ژورنال: Annalen der Physik
سال: 2005
ISSN: 0003-3804
DOI: 10.1002/andp.200410121