» Cedrat Recherche    Ultrasonic linear piezo motors, drives and actuators. Also dedicated piezo transducer software for motor design.    http://www.cedrat-grenoble.fr

» Cranfield University - Nanotechnology    Piezoelectric materials, motors, microsystems (MEMS) and actuator design.    http://www.cranfield.ac.uk/sims/materials/nanotech/research/active/

» Flexmotor - Motors and Micromotors    Innovative piezoelectric ultrasonic motor and micromotors for low cost, high volume manufacture for automotive, MEMS and consumer products. Low profile piezomotor and scalable to 2mm diameter.    http://www.flexmotor.com

» Institute of Piezomechanics    Ultrasonic actuator and motor research in Kaunas, Lithuania from 1970. Multi degree of freedom motors for robotics.    http://www.piezo.lt/index.htm

» MicroPropulsion Corp (USA)    Ultrasonic motors, piezoelectric transformers, miniature generators.    http://www.micropropulsion.com/

» Piezo Ceramic GmbH (Germany)    Ultrasonic motor manufacturer. Also piezo ceramic, PZT transducers and actuators.    http://www.piceramic.de

» Piezoelectric Products    EDO Ceramics Corp supplying transducers, actuator and a linear ultrasonic motor    http://www.edoceramic.com

» Surface Acoustic Wave Linear Motor    SAW linear motors. Article describing the principle, experiment and conclusions and future reading.    http://www.intellect.pe.u-tokyo.ac.jp/research/sawmotor/sawmotor_e.html

» Ultrasonic Motors    JPL's NDEAA Group work for space application of piezo devices up to year 2000 including commercially available motors.    http://ndeaa.jpl.nasa.gov/nasa-nde/usm/usm-hp.htm