You wrote;
> the question is -- *HOW* did they do it?
I had already written;
> 'scanning acoustic microscope' that uses a crystal shaped cavity that
> focusses intense vibrations to a very fine point IN THE MHZ range,
> they say specifically 6MHZ..
Crystal shaped cavity...
piezoelectric - when hit with a shock force, generates a high
voltage spike
conversely
when injected with a high voltage spike, it generates a
shock vibration
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