A thing I recall from many magazine ads in the 80's was an ultrasonic atomizer to put under a carb. It appeared to use some type of piezo transducers suspended from a plate via four stiff wires. One per venturi.
I assume there would have been engine specific versions to place the transducers as close as possible to the bottom of the intake chambers beneath the carb.
The concept was to very finely vaporize any liquid gasoline that landed on the transducers and perhaps blast some to a fine mist in mid-air.
I never saw any tests by actual buyers of them.
Ultrasonic vaporization of liquids is a real thing.
It would be interesting to see what would happen with introducing ultrasonic downstream from a throttle body injector.