2001/06/30 by Debasis Dan, A. M. Jayannavar
Chemistry · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #cond-mat.stat-mech #stochastic dynamics and bifurcation #thermodynamics and calorimetric analyses
paper · pdf · doi:10.1103/physreve.65.037105
published as Phys. Rev. E 65, 037105 (2002) · 5 figures
arxiv created 2001/12/01 · openalex publication_date 2002/02/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the efficiency of frictional thermal ratchets driven by a finite frequency driving force and in contact with a heat bath. The efficiency exhibits varied behavior with driving frequency. Both nonmonotonic and monotonic behavior have been observed. In particular, the magnitude of the efficiency in the finite frequency regime may be more than the efficiency in the adiabatic regime. This is our central result for rocked ratchets. We also show that for the simple potential we have chosen, with only spatial asymmetry (homogeneous system) or only a frictional ratchet (symmetric potential profile), the adiabatic efficiency is always more than in the nonadiabatic case.