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LK-99 isn’t a superconductor

nature.com

41–50 of 754 posts

Re: LK-99 isn’t a superconductor

#41
Honestly, I feel bad for the original authors, who were correctly holding out for stronger evidence but were forced into publishing early by the actions of a third party going behind their backs.

I hope they don't experience undue blowback because of this.

Re: LK-99 isn’t a superconductor

#42

Watching this unfold on HN has been eerily similar to watching r/UFOs whenever someone comes forward with "proof" of UFOs/coverups/whatever. I never want to rain on anyone's parade, as proof of ETs or room temperature superconductors would be great, but the hype only serves to obfuscate the truth. At this point, I'm prepped to disbelieve because of the obvious over-hyping. People want these things to be true so bad t…

"but the hype only serves to obfuscate the truth" Is that true? Do you think the Koreans or anyone would have made more progress finding the truth without the hype?

Are you implying that people on Hacker News saying LK-99 is a superconductor helped the scientific community in some way?

Re: LK-99 isn’t a superconductor

#43
post #22

I don't understand how did LK-99 create such wuss in the first place.

People are desperate to turn everything into content-identity fodder. Hundreds of IFLS channels making "fans of science." Piles of WSB bros wanting to play some markets like they have a fucking clue what's going on. Crypto-AI idiots hoping to jump and pump the next thing. Men on the street with little context hearing "cheaper phones." Culture warriors saying it means we don't have to worry about global warming anymore.

Nothing can just be itself anymore, it's all gotta be grist.

Re: LK-99 isn’t a superconductor

#44

What about L and K, the original scientists? Lots of speculation that LK-99 would be a career ending paper if it turned out that it wasn't a room temperature superconductor.

If 20 years of horsing around with a material that does not work did not end their careers, neither will this.

Re: LK-99 isn’t a superconductor

#46

Watching this unfold on HN has been eerily similar to watching r/UFOs whenever someone comes forward with "proof" of UFOs/coverups/whatever. I never want to rain on anyone's parade, as proof of ETs or room temperature superconductors would be great, but the hype only serves to obfuscate the truth. At this point, I'm prepped to disbelieve because of the obvious over-hyping. People want these things to be true so bad t…

At least superconductors are a real thing.

That's a fair point. Maybe people did react similarly, but the LK-99 hype was at the very least grounded in scientific methodology.

I should keep that in perspective and be a little less harsh.

Re: LK-99 isn’t a superconductor

#47

Which is more likely in our lifetime: aliens, or an ambient superconductor?

I'm going to vote for "ambient superconductor" even after this. At least we know superconductors actually exist at all, and the history of the field reflects incremental progress in terms of increasing the threshold temperature for superconductivity. With "aliens" we don't have much to go on at all, aside from vague Fermi-equation'esque appeals to "There must be aliens because the universe is so big[1]" or whatever.

[1]: I actually agree that it's very likely that alien life either has existed, does exist, or will exist somewhere in the universe. My skepticism is towards the possibility of that life visiting Earth. And mostly for the exact same reason: because the universe is so damn big.

Re: LK-99 isn’t a superconductor

#48

I found Thunderf00t's video on LK-99 to be funny because he pointed out something no one else did: In almost all applications of superconductors, they don't use high-temperature ones for one simple reason: Material properties. Most high-temp superconductors (including LK-99, he was assuming it was one, since he's not qualified to say one way or the other) are a ceramic. The ones that see use in the LHC, for instance,…

The current generation of mass manufactured high temperature superconducting tape is based on YBCO, which is a crystalline material (presumably what is meant here when saying ceramic). So the argument that superconductors need to be metallic/malleable to be useful doesn't really make a lot of sense.

Re: LK-99 isn’t a superconductor

#49
post #3

What are the practical implications of this?

We know why it fooled everybody, but AFAIK the material doesn't have any outstanding properties. With certain impurities and under certain conditions, it: - has a striking drop in resistivity during a temperature change — a property published in 1951 as a property of copper sulfide - has some ferromagnetic properties — enough to be tipped up in a magnetic field but not to levitate

some ferromagnetic properties

I'm still interested int hat, as it seems like it could be quite useful and the LK-99 material is not especially hard to produce.

Re: LK-99 isn’t a superconductor

#50

Earlier quoted context omitted.

Agreed! There's this bizarre reaction I see from many where they see the excitement and curiosity and hopefulness as a form of error and source of embarrassment. When mixed with an open mind and reasonable skepticism, it's a powerful opportunity to get people engaged in imagining a different world. I had all kinds of exciting conversations about what a validated, commercially viable LK-99 could produce. Why would I e…

HN discussion did not particlarly have "reasonable skepticism". This is probably because people (i) were not aware that there had been many other hypes about RTSC before but less publicly visible all proved to be false, (ii) not being able to accurately judge the technical quality of the initial evidence, (iii) uncritically believing that the data in the initial preprints was proof for superconductivity because their…

I find it perilous to treat an entire community as it if has one voice. Ie. "the HN discussion" as a singular entity with a singular binary state on its skepticism. Someone else could equally claim that the HN community was super pessimistic and skeptical about it, because I certainly saw a lot of that too!

While a convenient abstraction, it plays into our biases to notice and remember only some of the discourse.

Plus I don't think it's really relevant to what I'm saying given I'm not making a claim about how any specific individual or group reacted, but that it's odd when there's people who treat an optimistic outlook as an error.

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