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Water droplets bouncing on superhydrophobic surfaces

by SuperHydroPhobicCoating.com

ge Water droplets bouncing on superhydrophobic surfacesWhat is special on a superhydrophobic surface is that the water droplets bounce and roll-off. This property makes the superhydrophobic surface very attractive for a great number of potential applications. It is actually very interesting to watch how the droplets are bouncing on superhydrophobic surfaces. GE scientists recorded with a high-speed camera a bouncing droplet on a superhydrophobic surface.

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

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5 comments

1 Peter Liu { 03.14.09 at 2:29 pm }

The following link presents an easy means to make a superhyrophobic surface http://www.test-tube.org.uk/videos/pages_neil_hydrophobic.htm.

2 SuperHydroPhobicCoating.com { 03.14.09 at 2:50 pm }

Thanks for that great link, Peter!

We saw it a couple of weeks ago actually and we were planning to publish the video here one of these days so your comment was a good reminder to get the video presented to all the superhydrophobiccoating.com subscribers as soon a possible.

Thanks again and we hope you stick around here!

3 Peter Liu { 03.27.09 at 3:01 am }

I ran into this video while I was looking for a low-cost superhydrophobic coating process needed for my research. This coating must be able to withstand temperature up to 300 deg F. Do you happen to have any information on that?

4 SuperHydroPhobicCoating.com { 03.27.09 at 8:02 am }

Hi Peter,

probably you must use a rough hydrophobic polymer to prepare a low cost super-hydrophobic coating. In order the coating to withstand temperatures up to 300F or (`150 C) you must check the Tg (glass transition temperature) and the melting point of the polymer that is going to be used. e.g if the melting point of the polymer is 100 C it is not going to keep it’s super hydrophobic properties to 150 C.

5 Student { 02.25.10 at 10:20 am }

Can a hydrophobic coating be made by extracting the cuticle of lotus leaves?

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