Blog Green energy: Hydraulic Machinery and Systems A post symposium summary of the 31st Symposium on Hydraulic Machinery and Systems (IAHR 2022) in Trondheim. Blog PhD life abroad in the time of Corona How is it to be a PhD student at NTNU, working abroad during the corona situation? Carine Lausselet describes her new work days from home in Australia, month by month. Blog Removing sticky droplets and making super repellent surfaces Super-repellent surfaces lose their repellent properties when condensation occurs, either under low temperatures or high humidity conditions. A new surface has been developed, combining pyramidal microstructures with a nano-sized roughness on top, that maintains its super-repellent properties at all conditions.