2019/01/10 by Ricardo Chacón, Chacón, Ricardo, Pedro J. Martínez +1
Physics and Astronomy · #Adaptation and Self-Organizing Systems (nlin.AO) #Applied Physics (physics.app-ph) #FOS: Physical sciences #stochastic dynamics and bifurcation
paper · pdf · doi:10.48550/arxiv.1901.03119
openalex publication_date 2019/01/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The existence and properties of an exact universal excitation waveform for\noptimal enhancement of directed ratchet transport are deduced from the\ncriticality scenario giving rise to ratchet universality, and confirmed by\nnumerical experiments in the context of a driven overdamped Brownian particle\nsubjected to a vibrating periodic potential. While the universality scenario\nholds regardless of the waveform of the periodic vibratory excitations\ninvolved, it is shown that the enhancement of directed ratchet transport is\noptimal when the impulse transmitted by those excitations (time integral over a\nhalf-period) is maximum. Additionally, the existence of a frequency-dependent\noptimal value of the relative amplitude of the two excitations involved is\nillustrated in the simple case of harmonic excitations.\n