kiwon wrote:

> This paper says that they used POV-Ray for rendering, but not so much in detail.
> How can I use POV-Ray to render these kinds of materials? Would you please give
> me some idea or tip? :)

The paper seems to be mostly about simulating the behavior of the
fluid, so I think they get some complex water geometry out which they
can then render as water in addition to the object (also the object
mesh is probably deformed by their algorithm as it soaks).

It may be quite difficult to get decent results. Some things you
can do is make those parts of the object that are wet darker and
with more reflection, and add some water geometry such as droplets
with trace function.

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