Impact of rough potentials in rocked ratchet performance
arXiv:1705.01051 · doi:10.1016/j.physa.2017.12.074
Abstract
We consider thermal ratchets modeled by overdamped Brownian motion in a spatially periodic potential with a tilting process, both unbiased on average. We investigate the impact of the introduction of roughness in the potential profile, over the flux and efficiency of the ratchet. Both amplitude and wavelength that characterize roughness are varied. We show that depending on the ratchet parameters, rugosity can either spoil or enhance the ratchet performance.
References in corpus (7)
- Brownian motors: noisy transport far from equilibrium
- Chaotic Transport and Current Reversal in Deterministic Ratchets
- DNA transport by a micromachined Brownian ratchet device
- Temporally Asymmetric Fluctuations are Sufficient for the Operation of a Correlation Ratchet
- Deterministic ratchets: route to diffusive transport
- Brownian rectifiers in the presence of temporally asymmetric unbiased forces
- Flux reversal in a two-state symmetric optical thermal ratchet