Fig. 4
From: Nanoscale transfer of angular momentum mediated by the Casimir torque
Exotic rotational dynamics. a Temporal evolution of the angular velocity of the particles of a chain with N = 3, arranged as shown in the inset, where D = 10 nm and d = 1.5D. b Crossing of the second and third decay rates (i.e., λ2 and λ3) of the N = 3 chain shown in the inset of panel c when varying the ratio D′/D. In this case, D = 10 nm and d = 3D. c Temporal evolution of the angular momentum, L(t) = IΩ(t), for each of the three particles of the chain depicted in the inset, assuming D′/D = 1.914. We analyze two different cases with initial angular velocities given by Ω1/2π = 10 GHz + Ωc/2π, Ω2/2π = −0.39 GHz + Ωc/2π, and Ω3 = Ωc. In one case, Ωc = 0 while, in the other, Ωc/2π = 5 GHz. However, since there is no transfer of angular momentum to particle 3, both cases produce exactly the same results
