Every crystal's shape is a mirror of the internal arrangement of its molecules, but the molecules in photoswitchable crystals can expand, twist and change properties—from their color to their electronic conductivity—with a simple flash of light. This has made them highly sought-after for applications like pharmaceuticals and data servers. But scientists have very little control over the shape that crystals take.
Crystals in a new light: Research team proposes rethinking crystal structure analysis
