h a l f b a k e r y
Keep out of reach of children.
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The description of this idea will be divided into four sections-Description, Uses, Production, and Possible Extensions. Any brickbats, suggestions, and corrections will be welcome.
Description
This is basically a 2-D polymer like Graphene (which is a single, 1-atom-thick layer of Graphite, forming
a mesh of carbon atoms which looks like an unrolled buckytube), except it has square "holes" in the mesh-- one C is attached to 4 other Cs, like:
+
And each "C" of that "+" is attached to 3 other "C"s like:
+++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++
ad infinitum
Thus creating a nanoscopic "screen door" which has holes that Photons--"light"-- and H2,O2,CO2,and N2 --"air"-- can pass through easily, but Nothing Else--e.g. Nerve gases, pollutants, bacteria--can!Gas masks,( the mesh acts as a filter that only air can pass through )
Uses
Filters- ( Bacteria, Viruses, Pollen, Bad Odor Molecules and Dust are WAAYYY too big to pass through )
Composites- ( It would make a seriously spiffylicious matrix, dontcha think? )
Production-
Uhhhh.... No clue, as I don't know much in this area. Suggestions welcome!
Possible Extensions
tellurium-which has SIX holes- could be substituted for carbon, creating a cubical matrix which would be thicker and stronger, and as a building material, would let clean,fresh air in. the problem of temperature uncontrollability could be solved by running current through the matrix, warming it up like a lightbulb and ensuring that any chilly winter breeze which entered a wall of this stuff would come out into the building as balmy and tropical, making it excellent for couch potatoes, who can now "Get some fresh air" while staying inside!
graphene zeolite
http://usera.imagec...scuit3d/filter2.jpg
illustration [xaviergisz, Apr 06 2008]
Short name, e.g., Bob's Coffee
Destination URL.
E.g., http://www.coffee.com/
Description (displayed with the short name and URL.)
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Tellurium was proposed as an anti-knock agent before Midgley settled on tetra-ethyl lead.
Not nice stuff.
One of the side-effects of tellurium poisoning is that the victim stinks of garlic.
Cue [Jinbish]
Bun for the title. |
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1) Do you have any evidence to suggest
that it's possible to make a carbon
monolayer like this, i.e. that it's stable?
The fact that both graphite and
graphene form hexagonal arrays
suggest that it isn't possible. Also, the
lack of double-bonds (and the planar
carbon atom - which is highly strained)
is, I think, going to make this very
unstable. |
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3) Why do you assume that oxygen,
CO2 and nitrogen will pass through?
What's the pore size? Given that C-C
bonds are likely to be a couple of
angstroms, and the carbon atoms are
not points, the pore size is going to be
less than an angstrom. |
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4) H2 is not a part of air, to any
significant extent, by the way. |
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Graphene is two dimensional? |
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Well, at least there are capitol letters. |
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I don't think a graphene-like structure would be very stable on its own. Also, I'm not sure if the holes would be big enough to filter anything. |
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Instead you could use graphene-like 2D surface to construct a 3D structure which could act as a molecular sieve (a zeolite) (see illustration). |
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Yes, but this whole idea is based on the
assumption that there's something
magical about an array of carbon atoms
that makes them good for filtering at a
molecular level. |
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In my kitchen, I have a sheet consisting
of a three-dimensional array of carbon
and hydrogen atoms. It's flexible,
tough, transparent, cheap, and totally
useless as a filter. I also have a similar
sheet consisting of a fairly regular array
of aluminium atoms - not transparent
but otherwise ideal. It too is useless as
a filter. |
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This whole idea seems to be based on
the logical sequence: (1) Atoms can be
made into regular arrays (2) Filters have
a regular pattern therefore (3) A sheet
of
atoms would be a good filter. |
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ooo,good points. about the only reason i dont delete this is to allow future readers a way to chart my progress from suckage to reasonably OK halfbaker |
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