Interesting??? Patently false!!
Consider:
1. Thicker wire means less resistance, not more
2. EM radiation does not experience resistance at all!! Only reflection or refraction or absorption
3. You seem to imply that all atoms are alike. not true.
4. Amperage to overcome resistance??? please...
5. why are you comparing the 'resistance' or whatever of a PCB to the (patently dissimilar, but to give you a head) path from cellphone to cell tower?

Colling molecules together? Sounds like utter bunkum...

All molecules in a liquid are perpetually in motion and colliding against each other and the walls of the container. If it's about colliding molecules together, microwaving or conventional heating would have the same effect.. increasing the rate and energy of collisions between molecules as you increase their kinetic energy. If it's about 'colliding' without heating, any increase in pressure (by either pressurizing or just centrifuging or good old shaking around) would accomplish the same purpose, ultrasound or not. If it's about modifying chemical reactions, there's a few ways you could do that - heating or introducing a catalyst (to speed up irreversible reactions or shift the balance for reversible ones). I am not aware of pressure waves (i.e. ultrasound, in air or fluid) acting as a catalyst or doing anything special besides creating heat.

Some enlightened chemical engineer here who could throw light on what ultrasound could be reasonably considered to be accomplishing here?