131 citations · 349 across the 17 of their papers we have counts for
4 papers · 1 filter
A new dimension for piezo actuators: Free-form out-of-plane displacement of single piezo layers
Matthias C Wapler, Jens Brunne, Ulrike Wallrabe
We present a controlled mode of "topological" displacement of homogeneous piezo films that arises solely from an inhomogeneous in-plane strain due to an inhomogeneous polarization.…
Focusing Mirror with Tunable Eccentricity
Moritz Stürmer, Matthias C. Wapler, Jens Brunne +1
We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in…
Freeform high-speed large-amplitude deformable Piezo Mirrors
Matthias C Wapler, Jens Brunne, Ulrike Wallrabe
We present a new type of tunable mirror with sharply-featured freeform displacement profiles, large displacements of several 100μm and high operating frequencies close to the kHz r…
Piezo films with adjustable anisotropic strain for bending actuators with tunable bending profiles
Matthias C Wapler, Moritz Stürmer, Jens Brunne +1
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 act…