Polymers that can change shape or can change their surface topography in response to a trigger have a wide application potential varying from micro-robotics to avionics.Preferably this morphing proceeds fast and reversibly.We developed new morphing principles based on in-situ photopolymerized liquid crystal networks.Commonly the triggers are temperature,light,pH or the presence of chemicals or other moisture.In the lecture we will focus on UV actuation and demonstrate that by accurate positioning of molecules in the space of a thin film or coating the deformation figures can be predetermined and can be made very complex.In a special case the surface topography can be altered by light such that either regular surface structures are being such as line grating or irregular structures such as fingerprints.The surface topographies are dynamic and disappear as soon as the light is switch off.An interesting feature is that the surface tribology can be altered be UV exposure.