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A LEGO realization of a chain admitting a spinner soliton (Movie S9). (A) A view of the realization alongside a computer graphics sketch. The “L”-shaped pieces are the rotors, the shorter red bars connecting their ends are the springs, and the long red bars serve as supports for the pinning. The “T”-shaped pieces connect the red bars to a single rigid background frame. (B) Another view showing the staggering of the rotors in the transverse (z) direction.
