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Engineering Materials
Super-Slippery Coating Inspired by Carnivorous Plant
9/25/2013

An ultraslippery coating that repels oil and water even on vertical surfaces is created with a glass honeycomb-like structure with craters (left). This is coated with a Teflon-like chemical (purple) that binds to the honeycomb cells to form a stable liquid film. The film repels droplets of both water and oily liquids (right). Because it's a liquid, it flows, which helps the coating repair itself when damaged.   (Source: Nicolas Vogel, Wyss Institute)
An ultraslippery coating that repels oil and water even on vertical surfaces is created with a glass honeycomb-like structure with craters (left). This is coated with a Teflon-like chemical (purple) that binds to the honeycomb cells to form a stable liquid film. The film repels droplets of both water and oily liquids (right). Because it's a liquid, it flows, which helps the coating repair itself when damaged.
(Source: Nicolas Vogel, Wyss Institute)

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jmiller
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Re: Interesting stuff
jmiller   9/30/2013 10:56:37 PM
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It makes me excited to see where it goes and what they come up with next.

jmiller
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Re: Interesting stuff
jmiller   9/30/2013 10:54:17 PM
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I like to read articles where we as humans take God's technology and try to improve or use it in a new way.  There are so many cool things that are out in nature right now and to advance or use them in a new way is very exciting.

jmiller
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Re: Interesting stuff
jmiller   9/30/2013 10:44:07 PM
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I woudl think the auto or possibly trucking industry would be inerested if it reduces drag and increases mpg.  The trucking idustry will go nuts for a lb or two reduction in vehicle weight because of the potential cost savings.

jmiller
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Re: Interesting stuff
jmiller   9/30/2013 10:39:56 PM
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I can think of about a dozen ways to use this technology.  I might be al ittle confused, though.  Does the film only go on glass or can it be used on other surfaces.  perhaps steel.

Ann R. Thryft
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Re: SUPER-SLIPPERY COATING
Ann R. Thryft   9/30/2013 12:13:12 PM
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Thanks for the feedback, bobjengr. This is some time away from commercialization, but it does look promising.



bobjengr
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SUPER-SLIPPERY COATING
bobjengr   9/28/2013 1:48:27 PM
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VERY interesting post Ann.  Several years ago I had a consulting job involved with mounting solar collectors used in a small "solar farm".  It involved the base structures and motorized mechanisms to move the collectors across the horizon as the sun traveled east to west.  On HUGE factor we somewhat overlooked was keeping the collector plates clean.  It's amazing how much efficiency is lost due to dirty glazers.  The material you describe in your post would be very effective keeping clean surfaces.  I'm going to send your post to the gentleman I worked with just to keep him informed as to what might be one possible solution to the problem.   

Ann R. Thryft
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Re: Interesting stuff
Ann R. Thryft   9/27/2013 11:46:47 AM
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That doesn't sound very appealing. I sure wouldn't use a coating like that. Do you have a link you can share?



Ratsky
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Re: Interesting stuff
Ratsky   9/27/2013 11:44:34 AM
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At this point, the primary difference I see in the product descriptions is the Rustoleum product doesn't claim complete transparency; several reviews comment on the "milky sheen" it imparts to the coated surface.

Ann R. Thryft
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Re: Interesting stuff
Ann R. Thryft   9/27/2013 11:37:39 AM
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Ratsky, this material isn't even commercialized yet so it's definitely not being sold at Home Depot. There have been several similar R&D announcements in the last year or so of such slippery surface/coating technology. I'd guess the Home Depot stuff is the result of one of those.

Ratsky
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Re: Interesting stuff
Ratsky   9/26/2013 2:37:42 PM
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Is this the same stuff that Home Depot has been advertising recently, from Rustoleum?  Too many similarities to be a coincidence.  This ad just started running a few days ago.  HD website has many reviews, largely mixed.

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