The current design seems to uses 3 transducers at 2.25 MHz with a static phase shifter added on top of the transducers. Then they capture floating / dropping particles which are moving past the design that they want to be printing.
I am currently working on building a similar mechanism as a pet project, inspired by the SonicSurface[1], with the goal of having a dynamic hologram while not requiring a huge computer hidden in the back.
The current design seems to uses 3 transducers at 2.25 MHz with a static phase shifter added on top of the transducers. Then they capture floating / dropping particles which are moving past the design that they want to be printing.
I am currently working on building a similar mechanism as a pet project, inspired by the SonicSurface[1], with the goal of having a dynamic hologram while not requiring a huge computer hidden in the back.
[1] https://www.instructables.com/SonicSurface-Phased-array-for-...