TITLE

Sonic boom in soft materials: The elastic Cerenkov effect

AUTHOR(S)
Bercoff, Jeremy; Tanter, Mickaël; Fink, Mathias
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/22/2004, Vol. 84 Issue 12, p2202
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report an experimental evidence of an elastic sonic boom in soft materials. Our approach is based on the ultrasonic remote generation, inside soft media, of a supersonic moving source radiating shear waves in a Mach cone. In analogy with the Cerenkov electromagnetic radiation emitted by a beam of charged particles moving at a speed greater than the speed of light, an intense shear wave is radiated in soft materials. Such Mach waves are sensitive to medium elasticity inhomogeneities and are of great interest for ultrasound-based medical imaging applications. © 2004 American Institute of Physics.
ACCESSION #
12530465

 

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