interesting metal (etching) concept

On Friday, January 23, 2015 at 12:14:47 PM UTC-5, Scott Lurndal wrote:
> DerbyDad03 <[email protected]> writes:
> >On Thursday, January 22, 2015 at 2:05:55 PM UTC-5, Swingman wrote:
> >> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absol=
> >utely-nothing-to-do-with-water
> >>=20
> >> Tools, firearms, etc notwithstanding, wonder what a boat hull=20
> >> application would do?
> >>=20
> >
> >What if *everything* within a contained space was etched in this manner? Wh=
> >ere would the water land? Would it bounce around forever? If it would, coul=
> >d you harness that energy and create the ever elusive perpetual motion mach=
> >ine?=20
>
> The water repelling (and self-cleaning) behavior requires the aid
> of gravity. That means a flat surface will still collect water and
> dust/dirt.
>

Why would there need to be a flat surface within the contained space? Angle everything and continually rotate the space.

Here's my plan: Use the energy harnessed from the continually bouncing water to provide power to the motor that rotates the space.

Perpetual Motion! ;-)

On Thursday, January 22, 2015 at 2:05:55 PM UTC-5, Swingman wrote:
> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absol=
utely-nothing-to-do-with-water
>=20
> Tools, firearms, etc notwithstanding, wonder what a boat hull=20
> application would do?
>=20

What if *everything* within a contained space was etched in this manner? Wh=
ere would the water land? Would it bounce around forever? If it would, coul=
d you harness that energy and create the ever elusive perpetual motion mach=
ine?=20

The speaker mentioned that one advantage was that it was not a coating, the=
refore would not wear off. That got me wondering if the etching could event=
ually get filled up with minute particles of dirt. Perhaps the etching is s=
o small that nothing (yet) could fill the spacing. He did use the terms mic=
ro and nano scale, so perhaps that is not an issue.

"Swingman" wrote:


http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absolutely-nothing-to-do-with-water
>
> Tools, firearms, etc notwithstanding, wonder what a boat hull
> application would do?
---------------------------------------------------
Especially if it would keep barnacles from attaching to the underwater
portion of the hull.

Lew

DerbyDad03 <[email protected]> writes:
>On Thursday, January 22, 2015 at 2:05:55 PM UTC-5, Swingman wrote:
>> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absol=
>utely-nothing-to-do-with-water
>>=20
>> Tools, firearms, etc notwithstanding, wonder what a boat hull=20
>> application would do?
>>=20
>
>What if *everything* within a contained space was etched in this manner? Wh=
>ere would the water land? Would it bounce around forever? If it would, coul=
>d you harness that energy and create the ever elusive perpetual motion mach=
>ine?=20

The water repelling (and self-cleaning) behavior requires the aid
of gravity. That means a flat surface will still collect water and
dust/dirt.

>
>The speaker mentioned that one advantage was that it was not a coating, the=
>refore would not wear off. That got me wondering if the etching could event=
>ually get filled up with minute particles of dirt. Perhaps the etching is s=
>o small that nothing (yet) could fill the spacing. He did use the terms mic=
>ro and nano scale, so perhaps that is not an issue.

If the surface is tilted with respect to level, as the water washes
the surface, it takes dust with it. The advantage of this surface
treatment is that the tilt needs to only be a couple of degrees,
vs. thirty or more for standard water repellant surfaces.

On 1/22/2015 2:05 PM, Swingman wrote:
> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absolutely-nothing-to-do-with-water
>
>
> Tools, firearms, etc notwithstanding, wonder what a boat hull
> application would do?
>

Really cool.
I would love to see what it looks like under a microscope.

I wonder if it would still repel water vapor since it is more gaseous.


--
Jeff

On 1/22/2015 2:28 PM, Lew Hodgett wrote:
> "Swingman" wrote:
>
>
> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absolutely-nothing-to-do-with-water
>>
>> Tools, firearms, etc notwithstanding, wonder what a boat hull
>> application would do?
> ---------------------------------------------------
> Especially if it would keep barnacles from attaching to the underwater
> portion of the hull.
>
> Lew
>
>
>
Airplane wings and all of the skin!
De-icing would not be needed.

Cooking and clothes. PC - the little ones - repel water down in the
material interfaces - screen to case...

Very nice work.

Martin

On 1/22/15, 12:05 PM, Swingman wrote:
> http://www.csmonitor.com/Science/2015/0122/This-metal-surface-wants-absolutely-nothing-to-do-with-water
>
>
> Tools, firearms, etc notwithstanding, wonder what a boat hull
> application would do?
>

Given how long it takes to do a square inch, a boat hull may be a few
years away 8^)

Now if they could get it to shed water in a preferred direction, a self
propelling boat would be kinda cool,

-BR

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