Learn how to create a simple heart rate monitor using an Arduino Pro Mini, PulseSensor, and OLED display. This ...

A flexible and wearable ultrasonic sensor (WUS) constructed from a piezoelectric polymer film has been proposed for long-term continuous monitoring of the artery motion. The non-focused plane-wave ...

A new ultrasonic ranging transducer with high directionality is developed to enhance the spatial resolution in the pulse-echo measurement in air. The concept of the parametric transmitting array is ...