Fig. 2.

Birth of a crystal nucleus from medium-range structural order (see Supporting Information) for a system of N = 16,384. The process of nucleation of a crystal at ϕ = 0.533. Particles with intermediate Q₆ (0.28 ≤ Q₆ ≤ 0.40) are colored red, whereas those with high Q₆ (Q₆≥0.4) are colored green. The time unit is the Brownian time of a particle, τ_B. We can see the birth of a crystal and its growth. Time t = t^′ is when a supercooled liquid reaches a sort of quasi-equilibrium steady state after the initiation of simulations from a random disordered state.