Current and efficiency of Brownian particles under oscillating forces in entropic barriers*
Nutku Ferhat†, Aydιner Ekrem‡
       
Variations of useful work 〈 W 〉 and input energy 〈 E in〉 with temperature (a) and amplitude (b) for various types of forces. Selected parameters are α = 1/2, a = 1/2 π , b = 1.5/2 π , Δ = 1.0, L = 2 π , and f = 0.01.