Micro actuators and sensors are the fundamentals of miniaturized, intelligent and networked systems. Since 2012, a completely new type of powerful actuators has been developed and tested in the project group "Mesoscopic Actuators and Systems" MESYS of the Fraunhofer Institute for Photonic Microsystems IPMS in cooperation with the Brandenburg University of Technology BTU Cottbus - Senftenberg. Electrostatic actuators are used to move plates or bend cantilevers and therefore deflect light or laser beams, move liquids or generate ultrasound. The researchers aim is to solve fundamental problems and limitations of conventional electrostatic actuators, for which large deflections can only be realized in combination with large dimensions and high energy consumption. Using a suitable lever principle, the researchers developed a new class of electrostatic bending actuators that of an extremely compact design, large deflections and no hysteresis. Using conventional silicon manufacturing processes, these new actuators can be integrated directly into semiconductor components and CMOS circuits, thus enabling cost-effective volume production. Thanks to high performance and scalability of the patented actuators, various fields of application and design possibilities can be adressed. Optical applications are, for example, high-precision positioning drives of micro-tilt mirrors or lens systems for laser beam deflection, pico projectors, 3D-endoscopes or microscopic applications. NED-actuators are also suitable as optical switches or the highly precise positioning of optical waveguides. Furthermore, a variety of non-optical applications can be addressed, such as micro pumps and valves for microfluidic systems or as miniaturized loudspeakers for hearing aids, smartphones and wearables. Contrary to existing micromechanical loudspeakers NED-based speakers offer both an extremely compact design and high performance.