Fig. 6. Self-healing behavior in active spinner lattices.

(A to D) Snapshots of a spinner lattice demonstrating the self-healing process: (A) A spinner lattice at fH = 90 Hz, ρ = 0.0112 σ−2, (B) the moment of the lattice rapture by a 3-mm bead, (C) the lattice is locally fractured by the bead, and (D) spontaneously self-repaired lattice. Scale bar, 5 mm. (E) The time evolution of the mean bond orientational order parameter ψ6 in the fractured region of the spinner lattice.