(Color online) Overview of single-crystal performance data. (a) Cryogenic investigations with single crystals. (b) Strain versus electric field PMN-PT experimental analysis.
(Color online) Flexure designs employed in this experiment. (a) Solid model of flexure mechanism . (b) Typical test stand with flexures and combined in series.
Strain vs voltage for a stacked actuator. (a) Prestress to flexure A with an applied stiffness of . (b) Prestressed to flexure with an applied stiffness of .
Amplitude vs cyclic loading for two separate actuators (experimental conditions included preload, peak-to-peak at ).
(Color online) (a) Photograph of the 40 and 3 active layer PMN-PT stacks. (b) LVDT setup for (strain-electric field) measurement.
(Color online) Comparison between PZT & PMN-PT actuators. (a) Strain vs electric field (the PZT and PMN-32%PT are measured in an “applied stiffness” test stand with an inherent stiffness of ). (b) Photographs of the PZT and PMN-PT actuators mounted into the test stand.
(Color online) Characterizing the three and five active layer PMN-PT stacked actuators. (a) Short stacked actuator employing five active layers and preloaded in a flexure mechanism. (b) Strain vs applied electric field.
(Color online) Explanation of the short stacked actuators with limited boundary conditions (three vs five active layers).
Resonance measurement for a 40 active layer stack.
(Color online) High bandwidth steering mechanism. (a) Photograph of platen integrated with single-crystal actuators and platform. (b) Steering structure and test stand.
(Color online) Closed loop controlled response for at and . (a) Response of the platform (b) following error of the platform.
Actuator comparison (PZT vs PMN-32%PT) to achieve of motion.
Mechanism configurations and corresponding stiffness.
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