Superhydrophobic medium

As surrounding liquids oils or a specially liquid, fluorinert, can be used [100], For the actual experiments, a vegetable oil was chosen. It has a density lower than most aqueous solutions so that such droplets sink in the oil medium towards the panel surface. The droplets were applied using a normal pipet. Such prepared droplets are almost spherical on the polypropylene film. Often superhydrophobic materials were used as substrates. 

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