Pre-stressed Piezo Bending-buckling Actuators for Adaptive Lenses

Konferenz: ACTUATOR 2018 - 16th International Conference on New Actuators
25.06.2018 - 27.06.2018 in Bremen, Deutschland

Tagungsband: ACTUATOR 2018

Seiten: 4Sprache: EnglischTyp: PDF

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Lemke, F.; Frey, Y.; Wallrabe, U.; Wapler, M. C. (Albert-Ludwigs-Universität Freiburg, Freiburg, Germany)

In this contribution, we demonstrate a straightforward method to fabricate pre-stressed piezo-buckling actuators with increased working range using the remanent strain of piezo materials. At the example of an active piezoglass-piezo sandwich membrane for adaptive fluid lenses, we show that we can tune this stress using a suitable polarization sequence with partial repolarization before assembly. Additionally, we can achieve a pre-buckled state with the largest possible remanent pre-stress at complete depolarization before assembly.