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Titolo:
Motion in a rocked ratchet with spatially periodic friction
Autore:
Dan, D; Mahato, MC; Jayannavar, AM;
Indirizzi:
Inst Phys, Bhubaneswar 751005, Orissa, India Inst Phys Bhubaneswar OrissaIndia 751005 ubaneswar 751005, Orissa, India Guru Ghasidas Univ, Dept Phys, Bilaspur 495009, India Guru Ghasidas Univ Bilaspur India 495009 pt Phys, Bilaspur 495009, India
Titolo Testata:
PHYSICA A
fascicolo: 3-4, volume: 296, anno: 2001,
pagine: 375 - 390
SICI:
0378-4371(20010715)296:3-4<375:MIARRW>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUCTUATION-INDUCED TRANSPORT; STOCHASTIC RESONANCE; THERMAL RATCHETS; SYSTEMS; POTENTIALS; NOISE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Jayannavar, AM Inst Phys, Sachivalaya Marg, Bhubaneswar 751005, Orissa, India Inst Phys Sachivalaya Marg Bhubaneswar Orissa India 751005
Citazione:
D. Dan et al., "Motion in a rocked ratchet with spatially periodic friction", PHYSICA A, 296(3-4), 2001, pp. 375-390

Abstract

We present a detailed study of transport and energetics of a Brownian particle moving in a periodic potential in the presence of an adiabatic external periodic drive. The particle is considered to move in a medium with periodic space dependent friction with the same periodicity as that of the potential but with a phase lag. We obtain several results. Most of the results arise due to the medium being inhomogeneous and are sensitive to the phase lag. When the potential is symmetric we show that the efficiency of energy transduction can be maximized as a function of noise strength or temperature. However, in the case of asymmetric potential the temperature may or may not facilitate the energy conversion. But current reversals can be obtained as a function of temperature and the amplitude of the periodic drive. The reentrant behaviour of the current can also be seen as a function of phase lag. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 08:11:09