Piezo 2D linear motor

Piezo motor designs
“The actuator consists of a piezo-ceramic plate of size LxWx0.5L (X, Y, Z), polarized in the Y-direction. The two large faces of the plate are covered by electrodes. On the front are the two exciter electrodes, each covering half of the surface. The rear surface has a single electrode that serves as a common drain. On one long edge of the plate is a pusher, made of aluminum oxide.”, pdf
Piezoelectric Motors, an Overview by Karl Spanner and Burhanettin Koc, pdf
Design and Experiments of a Piezoelectric Motor Using Three Rotating Mode Actuators, pdf
Note: A compact, rigid, and easy-to-build piezo motor: The intact-tube GeckoDrive. Qi Wang, Yubin Hou, and Qingyou Lu, pdf
Design of Linear Ultrasonic Micro Piezo Motor for Precision Mechatronic Systems, pdf

Piezo drive circuits

Piezoceramic sources
EBL Products
APC International
Making peizoceramics