The electrostatic principle is widely known and used for actuators and will, therefore, not be explained at this point. The presented actuator is based on the so-called zipper actuator, the fundamentals of a two-dimensional (2-D) zipper actuator are discussed in detail in Refs. 3 and 4. For discussion of the actuator presented in this paper, it is sufficient to point out a few characteristics and basic design rules of an electrostatic actuator, respectively, the zipper actuator. Due to the highly nonlinear force-deflection-correlation, usually only one-third of the whole deflection range of a parallel-plate actuator is usable until the movable electrode is pulled-in.5 This also occurs for zipper actuators. The pull-in effect can theoretically be circumvented by specific electrodes resembling a polynomial curvature.3 The degree of that polynomial has great influence on the voltage versus deflection curve. A polynomial with leads to a nearly bistable behavior with a distinct pull-in effect. With an increasing degree of the polynomial, the deflection versus voltage behavior becomes more linear at the cost of increased voltage per micrometer deflection.4 To obtain an analog deflection behavior with relatively low actuation voltage, the polynomial degree of will be used for upcoming simulations. Additionally, in 4, a saturation-like behavior can be observed once the deflection of the cantilever beam gets closer to the maximum deflection. Subsequently, the maximum deflection should exceed the intended deflection of the actuator for an optimized voltage-deflection ratio. Besides that, the performance (generated force and deflection per volt) of the electrostatic zipper actuator can exceed the more common comb-drive and gap-closing actuators6 with a challenging fabrication as downside. Such a polynomial curvature can be created via silicon etching or deposition7 and is, due to limitations in fabrication, only suitable for in-plane movement. To ensure electrical insulation, the electrodes defined by the polynomial curvature are often embedded with bumpers for a minimum distance to the flexible cantilever beam,8 interrupting the intended curvature, and altering the deflection behavior. Despite those limitations, various design of silicon-based zipper actuators are successfully implemented in several devices such as fluid control9 or deformable mirrors.10 By changing the main material from silicon to a UV-curable polymer it is possible to fabricate three-dimensional (3-D) freeform curvatures with the scope of building out-of-plane zipper actuators with a specific polynomial curvature to alter the voltage versus deflection behavior considerably. For this, the required polynomial freeform has to be precisely replicated. In addition to the heavily changed fabrication possibilities, the elastic modulus of such a polymer [e.g., Ormocomp® with 1.6 GPa (11)] is considerably lower than the elastic modulus of silicon [160 GPa (12)], thus drastically reducing the required voltage.