Applications of wetting and solid characterization

There are many applications related to contact angles and solid-smfaces  

If wetting is not optimum, there are basically two different directions that can be followed. One way is to improve the smface (this can be further studied via atomic force microscopy (AFM) 

Polymer From melt data From contact angle data From critical surface tension 

Of course, in many cases, e.g. umbrellas, raincoats or novel non-wetting or self-cleaning materials, we want to have hydrophobic or even super-hydrophobic surfaces. The contact angles should have the maximum possible values in these cases. Alternatively we wish to have as low critical surface tensions as possible. There are many application examples of such novel surfaces, by TCNANO and others. Nature can provide inspiration for making such superhydrophobic materials, as illustrated by Scientific American (March and September 2003) about waterproof coats. 

These hydrophihc surfaces are wetted by water and repel each other in aqueous solutions. 

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