Acousto-electronics

Acousto-electronics (also spelled 'Acoustoelectronics') is a branch of physics, acoustics and electronics that studies interactions of ultrasonic and hypersonic waves in solids with electrons and with electro-magnetic fields. Typical phenomena studied in acousto-electronics are acousto-electric effect and also amplification of acoustic waves by flows of electrons in piezoelectric semiconductors, when the drift velocity of the electrons exceeds the velocity of sound. The term 'acousto-electronics' is often understood in a wider sense to include numerous practical applications of the interactions of electro-magnetic fields with acoustic waves in solids. In particular, these are signal processing devices using surface acoustic waves (SAW), different sensors of temperature, pressure, humidity, acceleration, etc.

See also

• Acousto-optics
• Rayleigh wave
• Love wave
• Interdigital transducer
• Picosecond ultrasonics

Further reading

• White, D. L. (1962). "Amplification of Ultrasonic Waves in Piezoelectric Semiconductors". Journal of Applied Physics. 33 (8): 2547–2554. Bibcode:1962JAP....33.2547W. doi:10.1063/1.1729015.
• Hickernell, F. S. (2005). "The piezoelectric semiconductor and acoustoelectronic device development in the sixties". IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 52 (5): 737–745. doi:10.1109/TUFFC.2005.1503961. PMID 16048176.
• Gulyaev, Yu. V.; Hickernell, F. S. (2005). "Acoustoelectronics: History, Present State, and New Ideas for a New Era". Acoustical Physics. 51 (1): 81. Bibcode:2005APhy...51...81G. doi:10.1134/1.1851632.

External links

• Consortium for Applied Acoustoelectronic Technology - University of Central Florida