Using mostly off the shelf hardware, [Marzo] creates a bowl-shaped phased array of ultrasonic transducers driven ... It looks like a lot of fun. Acoustic levitation is nothing new here – we ...

We’ve all seen acoustic levitation ... in which every transducer is individually driven, before a tantalising look at future work in fluid ultrasonics and the promise of an ultrasonic audio ...

Acoustic levitation ... systems. Ultrasonic Energy: Sound waves with frequencies higher than the upper limit of human hearing, often used in various applications, including cleaning and ...