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Monday, August 15, 2022 8:57:45 PM
Tech story, Neodymium mentioned.
https://phys.org/news/2022-08-oxygen-magnets-astronauts-easy.html
Making oxygen with magnets could help astronauts breathe easy
SNIP......"NASA currently uses centrifuges to force the gasses out, but those machines are large and require significant mass, power, and maintenance. Meanwhile, the team has conducted experiments demonstrating magnets could achieve the same results in some cases.
Although diamagnetic forces are well known and understood, their use by engineers in space applications have not been fully explored because gravity makes the technology difficult to demonstrate on Earth.
Enter the Center for Applied Space Technology and Microgravity (ZARM) in Germany. There, Brinkert, who has ongoing research funded by the German Aerospace Center (DLR), led the team in successful experimental tests at a special drop tower facility that simulates microgravity conditions.
Here, the groups have developed a procedure to detach gas bubbles from electrode surfaces in microgravity environments generated for 9.2s at the Bremen Drop Tower. This study demonstrates for the first time gas bubbles can be 'attracted to' and 'repelled from' a simple neodymium magnet in microgravity by immersing it in different types of aqueous solution.
The research could open up new avenues for scientists and engineers developing oxygen systems as well as other space research involving liquid-to-gas phase changes.
Dr. Brinkert says that "these effects have tremendous consequences for the further development of phase separation systems, such as for long-term space missions, suggesting that efficient oxygen and, for example, hydrogen production in water (photo-)electrolyzer systems can be achieved even in the near-absence of the buoyant-force."....snip
(More at link!)
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