Fig. 8From: Review: Porous Metal Filters and Membranes for Oil–Water Separationa–d SEM images of ablated titanium foil fabricated with a laser fluence of 12.4 J/cm2 and a microhole spacing of 100 μm [8]. e Wetting behaviour of water droplets on the titanium foil surface after laser drilling [8]. f Wetting behaviour of underwater oil droplets on the titanium foil surface after laser drilling [8]Back to article page