Not so, if you use a pair of specialised ultrasonic transducer arrays to move the air instead! (Video, embedded below) Three banks of thrusters provide a 180 degree steerable net force Details are ...

More information: Jaewoo Kim et al, Enhanced dual-mode imaging: Superior photoacoustic and ultrasound endoscopy in live pigs ...

A pioneering study has unveiled a revolutionary technique that enhances stem cell therapy for neurodegenerative diseases by ...

This interconversion between mechanical and electrical energy makes piezoelectric ... Piezoelectric crystals are the core components of ultrasonic transducers, which generate and detect high-frequency ...

[Lindsay] has a wonderful writeup about a new toy in the shop, an ultrasonic transducer. The 28kHz, 70W bolt-clamped Langevin transducer by itself is not much use, you need a power supply ...