Piezo Tube Actuators (Cylinders)
Piezoelectric tubes are thin-walled cylinders lined with electrodes that can be designed as either an actuator or a transducer. When polarized radially with negative electrodes on the interior and positive electrodes on the exterior, the piezo tube will contract radially and axially as soon as a voltage is applied. Piezo tube actuators can generate axial displacement (changes in length) or radial displacement (changes in diameters). The direction of displacement depends on the placement of electrodes along the piezo tube actuator, in conjunction with the direction of polarization and the application of the voltage. One end of the piezo tube is fixed, while the piezo tube body is responsible for deflection. Axial elongation and radial expansions are achievable with piezoelectric tube actuators and transducers.
Piezo tube actuators and transducers are extremely versatile, with fast response times, high operating frequencies and acceleration, and the ability to operate in rigid environments. As an actuator, piezo tubes are commonly used in inkjet printers, micropumps, and scanning probe microscopes due to their precise nature. For scanning probe microscopes, an alternating current is applied to the piezo tube actuator, generating displacement. The resulting displacement is proportional to the surface qualities and can be converted to measure surface properties. For sensory applications, piezo tube transducers are commonly used in hydrophones and sonar technology.
Piezo Direct offers a variety of custom piezo tube actuators and cylinders. Shape, finish, material, dimensions, and performance levels can all be customized! Piezo Direct’s tubes and cylinders are suitable for numerous applications. Contact us! Piezo Direct is more than happy to work with you to design a custom piezo product to meet your application requirements.