You searched for: “acoustoelectric effects
acoustoelectric effect, electroacoustic effect (s) (noun); acoustoelectric effects, electroacoustic effects (pl)
1. In electronics, the generation of a DC voltage in a crystal or in a metallic material, due to acoustic waves traveling along the surface of the material.
2. The development of a direct-current (DC) voltage in a semiconductor or metal by an acoustic wave traveling parallel to the surface of the material.
3. The amplification of a sound wave propagating in a piezoelectric semiconductor subject to a steady electric field that is strong enough so that the resulting electron drift velocity exceeds the speed of sound.