The repulsion radius, a R ij , present in the pre-factor is given by a R ij = (r i + r j )/2. L, the polymer brush length, is set to 10 nm for all simulations. 41 σ is the polymer brush density which is equal to 0.09 nm -2 . The simulations were performed at six different values of ϕ p , and for each, unless otherwise mentioned, λ D was varied from 5.1 to 5.3 nm. We performed 6 simulations in each condition. Repulsive walls, which interact with the particles by a shifted Lennard-Jones potential, were used to produce a simulation box, which is convenient for analysis but is not expected to effect results given we are studying assembly from a dilute gas phase. Simulations were carried out for 4 x 10 9 number of steps using a dimensionless time step of 0.005 unless otherwise specified. nm. All other settings were the same as described above.