The University of Arizona

3m Innovative Properties Company

Bassam Merheb

Pierre A Deymier

Mark D Purgett

Sanat Mohanty

Ali Berker

Manish Jain

Jaim Bucay

A sound barrier and method of sound insulation are disclosed. In one aspect of the disclosure, a sound barrier comprises a first, solid medium, such as a viscoelastic solid and a second medium, such as air. At least one of the two media forms a periodic array disposed in the other medium. The solid medium has a speed of propagation of longitudinal sound wave and a speed of propagation of transverse sound wave, the speed of propagation of longitudinal sound wave being at least about 30 times the speed of propagation of transverse sound wave.

Viscoelastic phononic crystal

A phonemic crystal is made of a first solid medium having a first density and a substantially periodic array of structures disposed in the first medium, the structures being made of a second solid medium having a second density different from the first density. The first medium has a speed of propagation of longitudinal sound waves and a speed of propagation of transverse sound waves, the speed of propagation of longitudinal sound waves being approximately that of a fluid, and the speed of the propagation of transverse sound waves being smaller than the speed of propagation of longitudinal sound waves.

Solid-state acoustic metamaterial and method of using same to focus sound

Growing community of inventors

Blaybel, Lebanon

Bassam Merheb