Compact ceramic piezo motors and actuators by PI (Physik Instrumente) LP, Auburn, MA, serve as effective replacements for classical actuators and motion control components in medical and pharmaceutical applications.  High-speed motors, high-force actuators and zero-wear flexure designs are available. Advantages: sterile, no lubricants, high speed, millisecond responsiveness, vacuum compatible, non-magnetic. Applications: precision motion control, optics and imaging, fast valve control, applications in high magnetic fields, vacuum, liquid dispensing, fast pumps, scanning microscopy, OCT (optical coherence tomography), and MRI (magnetic resonance imaging).