Fig. 6: Experimental observation of kink generation via acoustic wave packets in the KL chain.
From: Observation of mechanical kink control and generation via acoustic waves
a Homogeneous chain configuration with green arrows indicating the initial polarization vectors (RPS). The blue star marks the excited rotor (n = 1). b, c Example experimentally measured (b) and simulated (c) spatiotemporal chain response in terms of normalized total energy at each site, with green dashed lines denoting the group velocity at the excitation frequency in the infinite homogeneous chain (with start time corresponding to the end of the ramp) and yellow solid lines indicating the kink’s fitted center position from 4 s to 8 s. Color bars are truncated for visualization purposes. Small arrows in (b) and (c) indicate the initial (green) and final (red) polarization vectors. d Fitted kink’s center trajectories for different values of excitation amplitudes in simulations, with the kink’s center position fitted from 4 s to 7.5 s.
