Fig. 5: Dynamical evolutions of the entropy rates by engineering thermal reservoirs with smaller temperature gradient.
From: Entropy measurement of nonequilibrium phonon heat transport
a The entropy production rate Π, the entropy flux rate Φ, and the time variation of entropy dS/dt, and b Φ1,2 as a function of time for Λ/2π = 80 Ηz. The effective temperatures of two thermal reservoirs are T1 = 300 K and T2 = 400 K. c Π, Φ, and dS/dt, and d Φ1,2 as a function of time for Λ/2π = 80 Ηz. T1 = 400 K and T2 = 300 K. The fluctuating curves are the experimental measurements by averaging over 1500 trajectories. The solid lines are the theoretical simulations.
