Yes, there's been lots of research for many years on this. https://www.google.com/search?channel=fs&client=ubuntu&q=ultrasound+hyperthermia#cobssid=s https://w

Yes, there's been lots of research for many years on this. https://www.google.com/search?channel=fs&client=ubuntu&q=ultrasound+hyperthermia#cobssid=s https://www.google.com/search?channel=fs&client=ubuntu&q=ult... And if you want a real tangible example of cavitation, albeit via microwaves rather than focussed ultrasound, take a look at any plastic food containers that you microwave regularly. You'll likely be able to see food that has been 'jetted' into the plastic.