WP4 aims at fabricating fast fluid transport areas of several cm2 on non-flat hard substrates. Task 4.1 large area laser structures includes the extension of surface structures over large areas in inorganic materials using the processing parameter space identified in WP3 and employing high power, high repetition rate lasers and beam scanning reaching areas of at least 1 cm2 (M3). If M3 is passed successfully, the areas with laser-induced microtextures will be scaled up in Task 4.2 up to manufacturing size, which is given by the demonstrator decided in milestone M4. Task 4.3 proof-of- principle slide bearing includes the activities to design and test the demonstrator.