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A simple device that can capture its own weight in water from fresh air and then release that water when warmed by sunlight could provide a secure new source of drinking water in remote arid regions, new research from KAUST (King Abdullah University of Science & Technology) suggests.
At the heart of the device is the cheap, stable, nontoxic salt, calcium chloride. This deliquescent salt has such a high affinity for water that it will absorb so much vapor from the surrounding air that eventually a pool of liquid forms.
The full research paper is available on-line.
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Drinking Water Sucked from Dusty Desert Air Using Hybrid Hydrogel
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"In my opinion, Richard Stallman wouldn't recognize terrorism if it
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(Score: 2) by Immerman on Sunday December 09 2018, @04:37PM
Yep, which is why it's great that MIT has worked out a roll-to-roll process to produce high-quality graphene sheets at industrial scales. http://news.mit.edu/2018/manufacturing-graphene-rolls-ultrathin-membranes-0418 [mit.edu]
I'm really looking forward to the things industrial-scale graphene will make possible.
I'm also wondering if this roll-to-roll process creates long thin strips of continuous graphene, and if so, how the strength and durability of a strip of rolled-up graphene compares to a multiwalled carbon nanotube.