Scientists in Japan have uncovered a surprising twist, literally, in how molecules organize themselves. By introducing tiny leftover fragments from previous assemblies, they discovered a way to flip the direction of helical molecular structures.

Using specific intensities of UV and visible light, they controlled whether these molecules formed left-handed or right-handed spirals, revealing a new method to fine-tune optical and electronic properties. This groundbreaking insight could unlock novel ways to engineer smarter, more responsive materials.

Revealing the power of molecular self-assembly.