12/9/2023 0 Comments Thorlabs piezo actuator![]() Please refer to the info icons ( ) below for item-specific compatibility. Our PC4 Series Piezo Stacks are compatible with hemispheres and end cups to minimize internal stress when mounting. When it is necessary to precisely track the displacement of the actuator, Thorlabs recommends our piezo stack actuators with attached strain gauges. ![]() Piezoelectric devices, such as these actuators, exhibit hysteresis, thus the displacement of the actuator is not solely based on applied voltage. These open-loop piezoelectric actuators offer maximum displacements from 4.6 µm to 20.0 µm. As the voltage applied to the actuator goes from 0 V to the maximum drive voltage, the piezo expands longitudinally. These multilayer devices are ideal for nano- and micro-positioning. For more details and a diagram further comparing the two piezo stack insulation methods, please refer to the Operation tab. Compared to using an insulating gap as in discrete stacks, this design allows for a higher contact area and percentage of active PZT material than discrete stacks, which lends itself to lower internal stress. This separation enables sequential layers to alternate connections to the positive and negative poles (or applied bias and ground). In co-fired stacks, small amounts of glass filament are precisely located on each side of the stack so that every internal electrode is insulated from the external supply electrode of opposite polarity. These piezoelectric actuators transform electrical energy into precisely controlled mechanical displacements and are ideal for applications requiring rapid, precise positional changes on the nanometer or micrometer scale.Ĭo-Fired Piezo Stacks differ from Discrete Piezo Stacks in the insulation and conductor design. The entire stack is sintered together into one monolithic structure. Thorlabs' Co-Fired Piezoelectric Actuators are composed of stacked PZT layers separated by electrodes that span the entire surface area of the layer. Internal Electrodes Span Entire Active Cross Section with On-Stack Insulation.Fast Response Time: 1/(3×Resonant Frequency).Square, Square with Through Hole, Round, or Ring Cross-Section.Maximum Displacements from 4.6 µm to 20.0 µm.Co-Fired Design Sinters the Stack as a Single Monolithic Unit.Epoxy-Coated for Protection Against Rough Handling and Mechanical/Chemical Contamination.
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