piezoelectric micromachined ultrasonic transducer (PMUT) array, where the characteristic dimension of each PMUT cell is only $600~\mu \text {m}$ . The ultrasonic time-of-flight (TOF) difference method ...
The OnePlus 13 will have an ultrasonic fingerprint sensor, with a "super intuitive" position. As any other ultrasonic fingerprint scanner, this one will work with wet fingers, while unlocking at ...
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