But can they replicate the experiment on a cold rainy night in Stoke?
Roy "Jaws" Scheider stumbling into the cabin:
"You're gonna need a bigger bowl of popcorn!"
Compilation of claims/reports of LK-99 replication efforts
21–30 of 303 posts
Re: Compilation of claims/reports of LK-99 replication efforts
#22this 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...
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Re: Compilation of claims/reports of LK-99 replication efforts
#23So basically is looking like mostly a no? The replications haven't been encouraging so far.
Two reports have increased my patience factor a lot on this
First, a theoretical study found that the phase that’s reported to be superconducting is likely to be metastable based on some density functional theory calculations. That implies that actually making it may be rather difficult, and raises the bar for reproductions to show exactly what they are finding is superconducting or not. https://arxiv.org/abs/2307.16892
The second study was a comparison of the properties of superconducting Pb thin films with some of the data people have been reporting on LK-99 repro attempts. The authors hypothesize that people are getting micron to several nanometer sized particles of the superconducting phase embedded in an amporphous non-superconducting phase, and that this explains the mixed results. https://arxiv.org/abs/2308.01723
So, more careful analysis is needed and I’m still optimistic. I want to see much better x-ray and microscopic characterization along with the resistance data and so on, especially because the property measurements can be tricky. (My background is materials science but not superconductivity or condensed matter physics if that matters)
Re: Compilation of claims/reports of LK-99 replication efforts
#24[flagged]
I understand that denigrating a competitor is a defense mechanism to remove your unease, but really I would not bet against the Chinese.
They improved so much in the last three decades, taking advantage of western smugness, that the only question remaining is whether they will overtake USA or not.
Re: Compilation of claims/reports of LK-99 replication efforts
#25[flagged]
It should be a self reevaluating moment rather than a "china bad" moment.
China went from agricultural an third world country to a main contributor in many domains and the manufacturer of all our tech gadgets, in the same time the west pretty much stagnated
Re: Compilation of claims/reports of LK-99 replication efforts
#26So basically is looking like mostly a no? The replications haven't been encouraging so far.
It could just be hard to make this material.
The only thing we need is solid evidence that it's superconducting. If anyone has a stone that's superconducting at room temperature, then we know it's out there, it's possible to make it. It doesn't matter so much how it was made. If it exists, that's a great step in itself, isn't it?
Re: Compilation of claims/reports of LK-99 replication efforts
#27Earlier quoted context omitted.
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.
True, but what I meant was that the labs that couldn't replicate even diamagnetism clearly haven't created the same material, as the original LK-99 was shown to be diamagnetic.
If someone can show that it is diamagnetic and not superconducting then that could be evidence that they recreated the same material, but that it doesn't show superconductivity.
Re: Compilation of claims/reports of LK-99 replication efforts
#28It’s interesting to notice all unofficial institutions (bottom table) have a higher outcome of partial success. Unless the more legitimate labs are less capable, you have to wonder whether anything outside of an accredited institution can be trusted at all at this point. My guess is the allure of hype (more followers / engagement) is too strong for personal gain.
Re: Compilation of claims/reports of LK-99 replication efforts
#29I keep expecting to see coverage of this in what some would term the "mainstream" press but it's crickets. I refuse to believe that they're waiting for more results either, even the more reputable publications will carry junk science. At the very least there's an interesting story to tell in the publishing of the paper.
Re: Compilation of claims/reports of LK-99 replication efforts
#30I keep expecting to see coverage of this in what some would term the "mainstream" press but it's crickets. I refuse to believe that they're waiting for more results either, even the more reputable publications will carry junk science. At the very least there's an interesting story to tell in the publishing of the paper.
I think they've done their "exciting breakthrough" piece and now it's not very news worthy.