The valves and pumps being developed by the research group led by Professor Stefan Seelecke at Saarland University are made from electroactive silicone film and offer a lot more than just the typical ‘open/close’ or ‘on/off’ functionality. The researchers control the film electrically and can make it execute precise vibrations or pulses on demand, while also monitoring its exact position or shape. This responsiveness makes it possible to continuously vary the flow rate through a valve or continuously regulate the performance of a pump. Another feature of these film-based devices is that they can indicate if they have become blocked by a foreign body. As the researchers can shape the films to fit into almost any casing, the films can be used in a broad range of practical applications.