A research team has discovered that achiral hard banana-shaped particles can spontaneously form exotic structures like ...

The Rashba effect can arise in a crystal lacking inversion symmetry—inversion symmetry is invariance of an object after reflection around a point—as spin up and spin down electrons separate ...

Nonlinear optical effects occur when light interacts with materials that lack inversion symmetry. It was previously thought that these effects were uniformly distributed throughout the material.