We first simulated the overlapping of the PSFs without introducing diffusion effects into the numerical model (Fig. ). In this case, no overpolymerized areas were observed in the simulated structures. In contrast, when adding diffusion and decay parameters in the simulations, an overall result that is remarkably similar to the experimentally obtained structures was achieved (Fig. ). Despite our digital model's simplicity, this result indicates that the simulation of the parallel write process as a PSF overlap and basic diffusion process appears to be a reasonably accurate description.