Mechanoluminescence
Mechanoluminescence is light emission resulting from any mechanical action on a solid.
- Fractoluminescence is caused by stress that results in the formation of fractures, that in turn yield light.
- Piezoluminescence is caused by pressure that results in elastic deformation and large polarization from the piezoelectric effect.
- Triboluminescence is nominally caused by rubbing, but sometimes occurs because of resulting fractoluminescence. It is often used as a synonym.