2025年2月8日 · Thorlabs' Piezoelectric Benders provide a tip deflection whose magnitude and direction is a function of the applied bias voltages. This is useful for applications such as wire bonding, electrical switches, beam deflection, valves, and acceleration sensors.

Circular PZT bending transducers are available with diameters from 5mm to 50mm and thickness from 0.3mm to 2mm. Piezo benders can achieve significantly larger displacement compared to stacked piezo actuators. An extremely bendable patch transducer is also available for sensing, actuation and energy generation. Piezo Micro Bender Elements.

The PI Ceramic bimorph piezo line of Multilayer Bender Piezo actuators provide displacement up to 2 mm, forces up to 1 N (100 g) and response time in the millisecond range. The multilayer PZTs are manufactured from 20 to 40 µm ceramic layers using a co-firing process.

Serial bimorph benders are widely used as force sensors. Instead of two plates, monolithic, multi-layer type Piezo benders are available, too. Similar to multilayer stack actuators, they run on a low operating voltage (60 to 100 V). Bender type actuators provide large motion in a small package at the expense of stiffness, force and speed.

The bender poled for series operation is the simplest and most economical. It requires two connections to the outside surfaces of the piezoceramic layers which are electrically in series. It is characterized by a lower capacitance, lower current, and higher voltage. PARALLEL OPERATION

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All parameters depend on actual clamping conditions and applied load.

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A 1-layer piezoelectric actuator produces curvature when one piezo layer expands while the other layer contracts. These transducers are often referred to as benders, bimorphs, or flexural …

Common serial benders consist of 2 thin PZT plates, discs or strips with opposing polarizations. They are glued together by a proper adhesive, showing only 2 accessible (surface) electrodes for operation.