Parametric Amplification in the Dynamic Radiation Force of Acoustic Waves in Fluids

Details Parametric Amplification in the Dynamic Radiation Force of Acoustic Waves in Fluids Parametric Amplification in the Dynamic Radiation Force of Acoustic Waves in Fluids

2006-01-04

arxiv.org/abs/physics/0601016v4

Physical Review Letters 96, 234301 (2006)

Physics

Fluid Dynamics

Scientific paper

10.1103/PhysRevLett.96.234301

We report on parametric amplification in dynamic radiation force produced by a bichromatic acoustic beam in a fluid. To explain this effect we develop a theory taking into account the nonlinearity of the fluid. The theory is validated through an experiment to measure the dynamic radiation force on an acrylic sphere. Results exhibit an amplification of 66 dB in water and 80 dB in alcohol as the difference of the frequencies is increased from 10 Hz to 240 kHz.

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