To study the explicit droplets, we performed NVT simulations containing the same surface For every surface model, we study four simulation boxes to produce droplets of different From the balance between viscous dissipation and surface tension, the time for the droplet to reach its final shape can be estimated as ηR/γ where η is the fluid viscosity, γ is the interfacial tension, and R is the droplet diameter. Since we expect η and γ to be O(1) in DPD units, and R is at most several tens of r c (Table ), this time scale is perhaps 10-100 DPD time units, or not more than 10 3 -10 4 DPD time steps. Hence the equilibration time of 5 × 10 5 time steps should be ample to allow the droplet to reach its final cylindrical shape. This is in accord with our observations.