Mechanoluminescence

Mechanoluminescence is light emission resulting from any mechanical action on a solid. It can be produced through ultrasound, or through other means.Electrochemiluminescence is the emission induced by an electrochemical stimulus. 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.Sonoluminescence is the emission of short bursts of light from imploding bubbles in a liquid when excited by sound. Triboluminescence is nominally caused by rubbing, but sometimes occurs because of resulting fractoluminescence. It is often used as a synonym.

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