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

Abstract

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.

References in corpus (1)

• Dynamic ultrasound radiation force in fluids

Cited by in corpus (6)

• Acoustic radiation force on small spheres due to transient acoustic fields
• Amplification of compressional MHD waves in systems with forced entropy oscillations
• Dynamic radiation force of acoustic waves on solid elastic spheres
• Radiation forces and torques in optics and acoustics
• Acoustic angular sorting of resonant subwavelength particles
• Difference-frequency generation in nonlinear scattering of acoustic waves by a rigid sphere