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arXiv · 1309.3171

Piezo films with adjustable anisotropic strain for bending actuators with tunable bending profiles

Matthias C Wapler·Moritz Stürmer·Jens Brunne·Ulrike Wallrabe
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Abstract

We present a method to produce in-plane polarized piezo films with a freely adjustable ratio of the strains in orthogonal in-plane directions. They can be used in piezo bending actuators with a tunable curvature profile. The strains are obtained as mean strains from a periodic polarization pattern produced by a suitable doubly interdigitated electrode structure. This mechanism is demonstrated for several examples using PZT sheets. We further discuss how this tuning and the parameters of the electrode layout affect the overall magnitude of the displacement.

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Matthias C Wapler, Moritz Stürmer, Jens Brunne, Ulrike Wallrabe. 2014-03-19. Piezo films with adjustable anisotropic strain for bending actuators with tunable bending profiles. https://doi.org/10.1088/0964-1726%2F23%2F5%2F055006

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