Abstract We propose an amplitude-modulated pump ultrasound irradiation sequence to generate bubble cavitation for efficient sonoporation. By matching the envelope wavelength of modulated wave four times vessel diameter, we aimed improve efficiency collapse near wall and extend duration during repeated application sequence. Using agarose-based blood phantom, compared effects with those normal si...

This study investigates the effects of wall wettability on cavitation bubble collapse using pseudopotential lattice Boltzmann method with an appropriate external force term and contact angle boundary condition. The accuracy proposed numerical approach is verified by simulating a single-bubble near neutral wall. result shows that condition has significant effect forces exerted bubbles. For hydro...

In numerous industries such as drilling, peening, cleaning, etc., a cavitating jet is adopted. However, it challenging to simulate the flow field numerically with accuracy. The of organ pipe cavitation nozzle simulated in this research using RNG k−ε, DES, and LES turbulence models. model can more accurately predict periodic shedding cloud, which basically consistent morphology captured high−spe...

In this work we report injury to isolated red blood cells (RBCs) due to focused shock waves in a cavitation-free environment. The lithotripter-generated shock wave was refocused by a parabolic reflector. This refocused wave field had a tighter focus (smaller beam width and a higher amplitude) than the lithotripter wave field, as characterized by a membrane hydrophone. Cavitation was eliminated ...

Additive manufactured (AM) metals are attractive materials for medical implants, as their geometries directly produced from computer-aided design (CAD)/computer-aided manufacturing (CAM) data. However, the fatigue properties of AM weak compared with bulk metals, which is an obstacle to practical applications metals. To improve we developed a mechanical surface treatment using laser cavitation. ...

The nucleation of ice by power ultrasound at elevated temperatures (compared to control experiments) has been well documented for the past four decades, however there is a limited understanding of the influence, if any of cavitation bubbles. This work reports high-speed observations of the crystallisation of ice in the presence of acoustic cavitation. The experimental system allowed a small sam...