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Author Topic: What does a hot, superhydrophobic ball-bearing do in water?  (Read 2725 times)

Offline thedoc

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A superhydrophobic layer repels water from hot metal and prevents it boiling...

Read the whole story on our website by clicking here

  
« Last Edit: 18/09/2012 16:48:50 by _system »


 

Offline peppercorn

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Could this tech also be used to recover water from exhaust gases, without having to cool the total gas flow? ... I know the effect appears to be the 'wrong way round' for this, but the having the selectively 'move around' heat - must have many uses....

Perhaps micropore filters could be selectively coated with this type of surface, then H20 can go through some holes but not others (?).
« Last Edit: 17/09/2012 14:46:56 by peppercorn »
 

Offline CliffordK

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I would do the experiment on sub hulls and ship hulls.

Perhaps the hydrophobic channels would make it like running the vessel in an air pocket, and reduce he water resistance.  Also, potentially making an unpleasant environment for barnacles.

Would it reduce the sonar signature?

Repainting would be a pain though.
 

Offline chris

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Actually, the paper explores both superhydrophobic and superhydrophilic surfaces and Neelesh Patankar, the co-author, told me that what has been aluded to above is precisely what they are seeking to do. The interesting thing here is the ability to control the phase changes, in both directions.
 

Offline peppercorn

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Wow!
The more I think about this means for selectivity in gas flows (with mixed phase-transition), the exciting it seems in improving a whole host of thermodynamic processes!
 

Offline yamo

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No burn cookery?
 

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