The world’s finest sonar is useless without a transducer that pings and receives the echoes in an effective manner. Ultimately, pings paint the picture of the underwater world. To work well, a ...

The crystal in a crystal earpiece is a piezoelectric sound transducer. Back in the 1960s ... source for crystal earpieces might be tough, but piezo speakers are common on things that make beeps ...

The transducer is then simply placed on the metal shelf. The two piezo pickups are placed on either end of the shelf, with one going to the right channel of one input, the other going to the left ...

Piezo-electret film as an acceleration sensor At the core of this technology is a piezo-electret transducer in the form of an inconspicuous, flexible polypropylene film that serves as a sensor.

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More information: T. C. van Thiel et al, Optical readout of a superconducting qubit using a piezo-optomechanical transducer, Nature Physics (2025).