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The video features Neil Shirtcliffe of test-tube.org.uk

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Wonderful experiments with superhydrophobic surfaces (video) is a post from: SuperHydroPhobic Coating

Watch it at: http://www.grcblog.com/?p=364

Of course the bouncing of a droplet on a surface is not as simple as it looks. There is a great number of parameters that determines how a droplet can impact on a superhydrophobic surface; drop size and impact velocity are examined in a new published study. The theoretical study of the impact of a water droplet on superhydrophobic surface is presented at: http://pubs.acs.org/doi/full/10.1021/la802897g

Water droplets bouncing on superhydrophobic surfaces is a post from: SuperHydroPhobic Coating

A hydrophilic material is a friend of water. Friends like to come closer, so a water droplet would spread on a hydrophilic surface. Furthermore water can enter the pores of a hydrophilic material and totally wet it. Most natural materials are hydrophilic.

The evaluation of hydrophilicity is made through water contact angle measurements. A water droplet would occupy as long surface of the hydrophilic material as possible. So the water contact angle will be significantly low.

Hydrophobicity comes also from the Greek ύδωρ, (water) and φόβος (fear). It refers to the physical property of a material (known as a hydrophobic) that repels a mass of water.

Water would be afraid of a hydrophobic material. So a water droplet would try not to touch large area of the surface and the shape of the droplet would be spherical. Hydrophobic natural materials are waxes, oils and fats.

The evaluation of hydrophobicity is made through water contact angle measurements. A water droplet would be spherical so the water contact angle will be significantly high.

Hydrophilic vs. hydrophobic. The meaning of contact angle is a post from: SuperHydroPhobic Coating