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Ultrasound Signal Reveals Microstructure

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Physics 6, 41 (2013) – Published April 5, 2013
A model for analyzing materials using ultrasound shows that the seemingly random fluctuations in the data may contain information about the microscopic structure.
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Lasers of Pure Sound

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José Tito Mendonça, Physics 6, 32 (2013) – Published March 18, 2013
Phonon lasing—coherent amplification of phonons by stimulated emission—has been achieved in a purely acoustic analog of a three-level laser scheme.
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Double Magic Coincidence in an Optomechanical Laser Cavity

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Yoan Léger, Physics 6, 6 (2013) – Published January 14, 2013
Coherent amplification of phonons may become possible with monolithic semiconductor laser cavities that support both optical and acoustic modes.
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Subterranean Sound Waves from Projectile Impact

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Physics 5, 137 (2012) – Published December 7, 2012
A projectile striking granular material generates a series of acoustic pulses that propagate down from the impact site.