Comparison of the radius of gyration, Rg, of crystal nuclei for systems with an applied bias of 0.03 (circles) and −0.10 kBT (squares). (a) Nuclei are compared at similar supersaturation, δμ=8.15 and 8.10 for ɛ=0.03 kBT and −0.1 kBT, respectively. (b) Nuclei are compared at state points with a similar crystallization time. For ɛ=0.03 kBT, δμ=6.51 and for ɛ=−0.10 kBT, δμ=8.99. Data are fitted with a power law, Rg=aMb to obtain the fractal dimension, df=1/b, of the growing crystallites.