Fig. 5From: Hierarchical Nanoflowers on Nanograss Structure for a Non-wettable Surface and a SERS SubstrateEvaporation test. a The change of contact angles with 25 % ethanol and 35 % ethanol as a function of droplet volume using evaporation of liquids, and the relevant optical images of b 25 % ethanol and c 35 % ethanol dropletsBack to article page