Nanotechnology Basics — 3D Brownian Motion & van der Waals Aggregation

This is the same foundational nanoscale physics as the 2D version — Stokes-Einstein Brownian diffusion competing with a Lennard-Jones-like van der Waals attraction — but modelled in a genuine 3D fluid volume with instanced spheres and a free-orbit camera, so cluster shapes and the true three-dimensional random walk are visible from any angle instead of being flattened onto a plane.