Vibration energy harvesting with piezoelectric materials is of practical interest because of the demand for wireless sensing devices and low-power portable electronics without external power supply.

With the introduction of complex coefficients, the equivalent model of a piezoelectric transducer is established. Losses (elastic, piezoelectric and dielectric losses) or hysteresis in piezoelectrics ...

The piezoelectric ultrasonic composite transducer, which can be used in either gas or liquid media, is studied in this paper. The composite transducer is composed of a longitudinal sandwich ...

By using piezoelectric actuators coupled to the tool-holder, one can choose to use different passive and active controls, generating a more versatile tool to control machining vibration. However, one ...

LiteWing is a compact, WiFi-controlled drone based on the ESP32-S3 microcontroller. Designed for hobbyists, makers, and engineers, LiteWing offers a simple yet powerful platform for drone ...