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Two-Photon Lithography Simulator

Interactive two-photon lithography (2PP) simulator: watch a femtosecond laser focus into a photoresist droplet and polymerize a single sub-diffraction voxel at a time, building a 3D nanostructure — compared side by side with the blurry exposure of single-photon UV lithography.

Nanotechnology & MEMS3DAdvanced60 FPS💧 Water

Two-photon polymerization (2PP) is a real 3D-printing technique that beats the diffraction limit of light. A femtosecond laser is focused into a droplet of photosensitive resin; because two-photon absorption depends on the square of light intensity, curing only happens in the tiny sub-wavelength volume at the very center of the focal spot, not throughout the whole illuminated cone the way ordinary single-photon UV exposure works. Sweeping that focal point through the resin, voxel by voxel and layer by layer, builds an arbitrary 3D nanostructure — this simulator visualizes the scan, the resulting cured lattice, and the contrast against blurry single-photon exposure.

⚙ Under the hood

Watch a femtosecond laser focus into a droplet of photoresist and cure a single sub-diffraction voxel at a time via two-photon absorption, building a 3D nanostructure — contrasted with the blurry exposure zone of ordinary single-photon UV lithography.

Three.jsNanofabricationNonlinear OpticsInstancedMesh

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install