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Compilation of claims/reports of LK-99 replication efforts
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Re: Compilation of claims/reports of LK-99 replication efforts
#12[flagged]
Such a weird take. It's impressive how much money China invests in research. Coming up with new stuff is only half of the way.
Re: Compilation of claims/reports of LK-99 replication efforts
#13this video sent by one of the original authors to the NY Times is the most significant peace of evidence to me: https://vp.nyt.com/video/2023/08/03/110377_1_03superconducto...
Couldn't this be explained by magnetism alone? How does it show superconductivity?
Re: Compilation of claims/reports of LK-99 replication efforts
#14So basically is looking like mostly a no? The replications haven't been encouraging so far.
Hard to say. The samples that didn't achieve diamagnetism don't tell us much except that creating LK-99 is tricky, which is not a big deal.
If someone can show both diamagnetism and prove that it is not a superconductor then that would be pretty discouraging.
Re: Compilation of claims/reports of LK-99 replication efforts
#15But can they replicate the experiment on a cold rainy night in Stoke?
Well thank you for making me bust out laughing at work.
Re: Compilation of claims/reports of LK-99 replication efforts
#16So basically is looking like mostly a no? The replications haven't been encouraging so far.
Hard to say. The samples that didn't achieve diamagnetism don't tell us much except that creating LK-99 is tricky, which is not a big deal. If someone can show both diamagnetism and prove that it is not a superconductor then that would be pretty discouraging.
Hm, but diamagnetism in itself doesn't mean that it's a superconductor, no? There are a few diamagnetic materials that aren't superconductors, AFAIK.
Re: Compilation of claims/reports of LK-99 replication efforts
#17Re: Compilation of claims/reports of LK-99 replication efforts
#18this video sent by one of the original authors to the NY Times is the most significant peace of evidence to me: https://vp.nyt.com/video/2023/08/03/110377_1_03superconducto...
Couldn't this be explained by magnetism alone? How does it show superconductivity?
Absolute layman here, but from what I've read it's supposed to show diamagnetism and the Meissner effect and flux pinning. Assuming no new weird physics, the only materials that exhibit those behaviours are superconductors.
Re: Compilation of claims/reports of LK-99 replication efforts
#19this video sent by one of the original authors to the NY Times is the most significant peace of evidence to me: https://vp.nyt.com/video/2023/08/03/110377_1_03superconducto...
That is a MASSIVE piece of LK99 if it is true. Any information on source? Any details?
Re: Compilation of claims/reports of LK-99 replication efforts
#20this video sent by one of the original authors to the NY Times is the most significant peace of evidence to me: https://vp.nyt.com/video/2023/08/03/110377_1_03superconducto...
Couldn't this be explained by magnetism alone? How does it show superconductivity?
Magnetic levitation can't be done with normal magnets alone: https://en.wikipedia.org/wiki/Earnshaw%27s_theorem
TL;DR: Normal magnets have two poles, and will try to flip themselves around to achieve a lower energy state. You cannot levitate a normal magnet on another magnet without mechanical stabilization. Superconducting materials actively repel all magnetic field lines and can achieve levitation without external stabilization.