3D Nanocapsule Pore Diffusion Simulator

A drug nanocapsule's shell is not a continuous membrane at the molecular scale — it is a polymer or lipid wall punctured by a finite number of pores or defects the payload must actually find. This simulator tracks individual drug molecules as they random-walk inside the capsule core and shell, escaping only when they reach one of the shell's discrete pores, giving a particle-level view of the same controlled-release process the 2D bulk-diffusion simulator shows as a smooth curve. Adjust pore density, temperature and the surrounding pH — mimicking a stimulus-responsive shell that swells in an acidic tumor microenvironment — to see how molecule-by-molecule escape adds up to the population release behavior used in nanomedicine design.