Live

Atom Sandbox

Realtime molecular dynamics on the GPU, in the browser, with WebGPU.

Build a scene from crystals, grips and single atoms, press Play, and watch them move, heat up and deform. For example, drop a steel cube onto an iron slab. Every atom is one particle, and all of the behavior comes from interatomic potentials.

It needs a browser with WebGPU, such as a recent Chrome or Edge.

Clips

Tensile test: an iron bar stretching and necking down

Tensile test: the neck thins to a few atoms and the bar breaks

A water droplet jiggling on a copper surface

Metal sampler: blocks of different metals settling onto an iron slab

Screenshots

A column of grey iron atoms stretched between a blue puller and a clamp, narrowing in the middle, with a stress-strain graph in the corner — Tensile test, necking

The iron bar broken in two: a cone of atoms hanging from the blue puller above and a cone standing on the clamp below — Tensile test, after fracture

A cloud of water molecules sitting on a lattice of orange copper atoms — Water droplet on copper

A row of copper, iron, gold-coloured, steel and aluminium blocks lying on a grey slab — Metal sampler

simulation
webgpu
physics