Interactive experiment
Voronoi crystal growth
Crystal nucleation seeds appear at random and grow outward. Each crystal has its own orientation, shown by color. Where two crystals meet, grain boundaries form. Click to add nucleation sites. The result is a polycrystalline structure — the same physics behind metals, ice, and ceramics.
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How it works: Each seed grows outward like a wavefront.
The anisotropy parameter makes crystals prefer certain directions based on their orientation,
producing faceted shapes instead of perfect circles. Where growth fronts collide, grain boundaries
form — the dark lines between crystals. Real metals, ceramics, and ice form this way.
The grain boundary network determines material strength, conductivity, and fracture behavior.