Piezo Ceramic GmbH (Germany)
Piezo Ceramic, PZT Transducer, Piezo Actuator, Aktor, Aktuator, Piezo Motor, Piezo Component

MicroPropulsion Corp (USA)
ultrasonic motors, piezoelectric transformers, miniature generators

Cranfield University - Nanotechnology
piezoelectric materials and actuator design.

Rotary Ultrasonic Motors Actuated By Traveling Flexural Waves
Shyh-Shiuh Lih, Yoseph Bar-Cohen, Jet Propulsion Laboratory, California Institute of Technology, Pasadena.

Ultrasonic Motors
Advanced Actuators activity of the JPL's NDEAA Group

Piezopump
The NDEAA's piezoelectric peristaltic pump Dr. Yoseph Bar-Cohen and Dr. Zensheu Chang, JPL, Section 354

Piezoelectric Motor
High Speed Piezoelectric Micropositioning Motor - Model PDA130 (EDO Ceramics)

Brian Andersen, Piezomotor Research
Research in piezoelectric motors. Development of a spherical piezoelectric motor.

Surface Acoustic Wave Linear Motor
Article describing the principle, experiment and conclusions. Includes drawings, graphs and future reading .

Piezoelectric motors for nanoengineering and metrology
Nanotechnology Group, Advanced Materials Department

Institute of Piezomechanics (Kaunas, Lithuania)
Ultrasonic actuators and motors.

Ferroelectric Materials for Integrated Machines
MIT EECS Event Anita Flynn University of California, Berkeley