Unveiling of the world's smallest and most powerful micro motors

01 May 2015

Realization of practical torque for a one cubic millimeter ultrasonic motor

Piezoelectric ultrasonic motors have two significant advantages, namely their high energy density and their simple structure, which both contribute to their miniaturization. We have built a prototype micro ultrasonic motor using a stator with a volume of approximately one cubic millimeter. Our experiments have shown that the prototype motor generates a torque of more than 10 μNm with a one cubic millimeter stator. This novel motor is now the smallest micro ultrasonic motor that has been developed with a practical torque.

Full text: Unveiling of the world's smallest and most powerful micro motors
Toyohashi Tech: Press release