52 citations · 84 across the 6 of their papers we have counts for
6 papers
Properties of piezoceramic materials in high electric field actuator applications
Binal P Bruno, Ahmed Raouf Fahmy, Moritz Stürmer +2
In this paper, we compare the performance of 8 PZT ceramics and one PMN-PT material for typical bending actuator applications. This includes the measurement of non-linear transvers…
Topological in-plane polarized piezo actuation for compact adaptive lenses with aspherical correction
Florian Lemke, Moritz Stürmer, Ulrike Wallrabe +1
In this contribution, we investigate the effects of using in-plane polarized piezo actuators with topological buckling displacement to drive glass-piezo composite membranes for ada…
Single-Sided Contacting of Out-of-Plane Polarized Piezo Films for Fluid Membrane Lenses
Moritz Stürmer, Matthias C. Wapler, Ulrike Wallrabe
We present an adaptive lens which tunes its focal length with a glass membrane that is deformed by an integrated piezo bending actuator. A particular challenge in the fabrication o…
A compact, large-aperture tunable lens with adaptive spherical correction
Matthias C. Wapler, Moritz Stürmer, Ulrike Wallrabe
In this paper, we present the proof of concept of a very fast adaptive glass membrane lens with a large aperture/diameter ratio, spherical aberration correction and integrated actu…
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…
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…