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Let's start with another question: [[Atmospheric_Conversion_Center|Atmospheric Conversion Centers]] clean air for cities, but what would keep the clean air inside and the toxins outside the cities? | Let's start with another question: [[Atmospheric_Conversion_Center|Atmospheric Conversion Centers]] clean air for cities, but what would keep the clean air inside and the toxins outside the cities? | ||
[ | [https://phys.org/news/2012-01-graphene-supermaterial-superpermeable.html Graphene oxide] is known to be impermeable to everything except water (and maybe hydrogen). Graphene has so tight of a structure that almost nothing fits between its atoms. It's also pretty transparent, which would let sunlight still reach the interior of our hypothetical shield. | ||
Other graphene layers attached to the first one could align the material along a magnetic field. Pure graphene isn't magnetic, but doping and defects can change the properties of graphene in many ways. | Other graphene layers attached to the first one could align the material along a magnetic field. Pure graphene isn't magnetic, but doping and defects can change the properties of graphene in many ways. |