Ghost touch: turning surfaces into interactive tangible canvases with focused ultrasound

[@fzigunov]

This is absolutely amazing. You are a legend!!

[@depluim9187]

It really is amazing! How would you block ultrasound if you needed to? do you know any materials that it doesn't permeate? Thanks!

[@nonsquid]

With a large enough array, cloud bursting could be possible. On a small scale, could you move a fog mist around in streams to form distinct patterns? If the pattern is controlled enough, could you move fuel mist in patterns that burn, then refresh to produce vectored burns at specific vectors to produce thrust? This could be a very dynamic vectored impulse thruster for small drones.

[@MilitaryMatters1]

How do you... Direct the sound? Is the transducers moving? Or are you directing the movement by using different transducers in an on/off array?

[@andreamitchell4758]

1:43 Imagine an automatic espresso / cappuccino machine with an array like this under the cup plate that could make those fancy froth designs automatically