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Old 01-23-2015, 05:59 AM #1
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Default Using Lasers to Create Super-hydrophobic Materials

A group of researchers at Rochester
University led by Chunlei Guo has developed
a laser etching technique to carve
superhydrophobic surfaces. Water has such
a high contact angle with the special new
pattern that it bounces like a ball and
dribbles away.



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Old 01-23-2015, 07:19 AM #2
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Default Re: Using Lasers to Create Super-hydrophobic Materials

I saw this earlier today. I wonder how long the etching process takes? I would assume quite some time, because lasers don't cover that much surface area so it would take many passes to coat a large part.
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Old 01-23-2015, 05:34 PM #3
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Default Re: Using Lasers to Create Super-hydrophobic Materials

It is probably under a minute per square
inch unless the pattern is really complex.
Galvo marking lasers are FAST.
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Old 01-23-2015, 06:45 PM #4
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Default Re: Using Lasers to Create Super-hydrophobic Materials

This more or less sounds like how blu-ray burners work; etching really small patterns into plastic instead, though.

Makes me wonder if there could be a way to ghetto mod a blu-ray burner to do something similar to this.
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Old 01-23-2015, 09:15 PM #5
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Default Re: Using Lasers to Create Super-hydrophobic Materials

I think it would be possible if they would
release information about the process. I
doubt they will, though, so they can sell
it to us saps at super inflated prices.
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Old 01-24-2015, 12:38 AM #6
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Default Re: Using Lasers to Create Super-hydrophobic Materials

Quote:
Originally Posted by Le Quack View Post
This more or less sounds like how blu-ray burners work; etching really small patterns into plastic instead, though.
Optical disc burning isn't done by etching a surface, it's done by coloring a dye.
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Old 01-26-2015, 08:03 PM #7
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Default Re: Using Lasers to Create Super-hydrophobic Materials

University of Rochester is less than 10 miles from me Think they will let me borrow some stuff?
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Old 01-26-2015, 10:00 PM #8
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Default Re: Using Lasers to Create Super-hydrophobic Materials

I think they may want to borrow some of
your stuff!
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Old 01-27-2015, 09:07 AM #9
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Default Re: Using Lasers to Create Super-hydrophobic Materials

I guess they are just using one particular substrate? it would be cool if they started trying it on aluminium, steel copper and everything else, i do a bit of super hydrophobic coating at work time to time but it leaves a milky film on when finished...... which can be undesirable, quite often public toilets request it for their ceilings so that people cant stick their wet toilet paper balls to the ceiling, haha "Ultra Every Dry" is what we use
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Old 01-27-2015, 06:13 PM #10
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Default Re: Using Lasers to Create Super-hydrophobic Materials

The test substrate was aluminum, but they
appear to indicate that it can be applied
to any surface.
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Old 01-28-2015, 01:18 AM #11
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Default Re: Using Lasers to Create Super-hydrophobic Materials

Quote:
Originally Posted by The Lightning Stalker View Post
The test substrate was aluminum, but they
appear to indicate that it can be applied
to any surface.
oh i had the video on mute. Its awesome technology especially using lasers.
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