5 papers · 1 filter
Experimental and numerical evidence of intensified non-linearity at the micro and nano scale: The lipid coated acoustic bubble
AJ Sojahrood, H. Haghi, T. M. Porter +2
A lipid coated bubble (LCB) oscillator is a very interesting non-smooth oscillator with many important applications ranging from industry and chemistry to medicine. However, due to…
Nonlinear dynamics of acoustic bubbles excited by their pressure dependent subharmonic resonance frequency: oversaturation and enhancement of the subharmonic signal
A. J. Sojahrood, R. Earl, Q. Li +3
The acoustic bubble is an example of a highly nonlinear system which is the building block of several applications and phenomena ranging from underwater acoustics to sonochemistry…
Notes on the two main routes of period doubling and 1/2 order subharmonic oscillations in a bubble oscillator
A. J. Sojahrood, R. E. Earl, M. C. Kolios +1
Period doubling route to chaos is one of the well-known characteristics of nonlinear oscillators. A bubble is a highly nonlinear oscillator that exists in various phenomena and app…
Pressure dependence of the ultrasound attenuation and speed in bubbly media: Theory and experiment
A. J. Sojahrood, Q. Li, H. Haghi +3
Results of the measurements of sound speed and attenuation in a bubbly medium are reported. Monodisperse bubble solutions are sonicated with broadband ultrasound pulses with pressu…
A comprehensive bifurcation method to analyze the super-harmonic and ultra-harmonic behavior of the acoustically excited bubble oscillator
AJ. Sojahrood, D. Wegierak, H. Haghi +2
Acoustically excited bubbles are involved in a wide range of phenomena and applications ranging from oceanography to sonoluminescence; they have applications in chemistry, medical…