This simple STM setup utilises a piezoelectric actuator constructed by deliberately cutting a piezo speaker into four quadrants. With individual drive wires attached to the four quadrants.

PI, a global leader in nanopositioning, precision motion control systems, and air bearing technology, introduces ...

Most experiments in flexible robot actuators are based around pneumatics ... in a metal block acting as the stator of this motor. Piezoelectric devices attached to that block minutely distorts ...