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I wonder if the path to room-temperature superconductors involves finding ways of containing hydrides at very high pressures, rather than finding materials that
by lachlan-sneff 7y ago
I wonder if the path to room-temperature superconductors involves finding ways of containing hydrides at very high pressures, rather than finding materials that superconduct and ambiant temperatures and pressures.
- sp332 7y agoWrap them in carbon nanotubes :)
- lachlan-sneff 7y agoMy immediate thought was to wrap them in some sort of diamondoid shell through some sort of mechanosynthesis process, but maybe a carbon nanotube would be stronger?
- the_seraphim 7y agocouple it with some double walled carbon nanotubes and you can get upto 700 GPa https://www.nextbigfuture.com/2019/01/fabrication-of-ultrastrong-700-gigapascal-fused-double-walled-carbon-nanotubes.html https://www.nextbigfuture.com/2019/01/fabrication-of-ultrast...
- DiseasedBadger 7y agoI wonder if one could just stuff the tubes with hydrogen, then lanthanum powder, then just let them expand? They might auto-heat from the pressure, and assemble themselves, if you just unfroze them.
- qcj 7y agoI have the feeling it will be more economical to just use a low-temperature superconductor and cool it down with a closed-cycle cryocooler, rather than try to get a large enough pressure vessel that can maintain such high pressures.
- lachlan-sneff 7y agoWith current technology, definitely.
- velosol 7y agoA few years ago, that was the thinking when a 'high temperature' (much colder than room temperature) superconducting cable was trialed in Germany [1]. [1]: https://www.tdworld.com/overhead-distribution/ampacity-project https://www.tdworld.com/overhead-distribution/ampacity-proje... [2 with follow-up presentation]: https://snf.ieeecsc.org/abstracts/stp475-ampacity-project-%E2%80%93-update-world%E2%80%99s-first-superconducting-cable-and-fault-current https://snf.ieeecsc.org/abstracts/stp475-ampacity-project-%E...
- marcosdumay 7y agoYou want high temperature superconductors because they can stand larger magnetic fields. So, it is certainly easier to keep them cool than pressurized, but the cold ones are much less useful.