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Andrew McCalip demonstrates synthesis of LK99

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Re: Andrew McCalip demonstrates synthesis of LK99

#211
post #99

I'm curious what companies stand to gain the most from this discovery... I understand the promises of LK-99, but where do you think where we'll see it be applied first?

Depends on its price and properties. If it is affordable, I would go with electric motors. Not having to cool them would be hugely beneficial. If it is expensive, then MRI machines and space equipment.

Re: Andrew McCalip demonstrates synthesis of LK99

#212
Honestly I don't see anything that would prove superconductivity in this video. If LK-99 is a type-II superconductor you should observe flux pinning i.e. you would be able to move the flake with a tweezer and it would be stuck in place as the magnetic flux lines are pinned to defects in the material. I haven't seen any details on the supposed properties of the material like the coherence length, but from the original paper it seems the critical field of a small flake is rather low at a few 100-1000 Oe, so a more convincing test than thermal cycling would be to simply use an electromagnet and increase the field strength, the sample should then drop once the (second) critical field is reached. If the critical field strength is too high you can reduce it by heating the sample, but what's critical is to observe breakdown of diamagnetism with an increase in field strength without any form of hysteresis, which you won't observe in the same way in a diamagnet.

The best test would probably be to produce a Josephson junction and measure Shapiro steps at high frequency, that's something that cannot be explained by anything except a superconducting quantum material. As the sample is highly impure it could even be enough to irradiate it with a microwave source and measure the reflectivity / transmittance, there could even be intrinsic Josephson effect like in high Tc superconductors. Impossible to say though without knowing more details about the material.

Re: Andrew McCalip demonstrates synthesis of LK99

#213
post #111

Earlier quoted context omitted.

All I see from US academics on Twitter are debates about this and that. Borderline annoying. This is the first result from mighty US capitalist machine meanwhile 3 Chinese labs have published pre prints and Russian replicated it in her kitchen.

This, its utterly shameful. Hot takes here, hot takes there, skepticism here, tell people to calm down there. Yet not a single replication! China has gone through multiple failed and successful replications so far. And the first US replication is from an amateur. If LK-99 works out, expect some congressmen to use this as a bludgeoning tool against the state of US public science.

It's the same in Korea where the research originated.

A bunch of professors belonging to a hastily formed academic committee are trying to monopolize the public debate, quibbling about errors in the arxiv paper and demanding that Lee & Kim turn over samples of LK-99 because the big-name professors are obviously too busy to make their own. It seems that their first priority is to avoid a repeat of the Hwang scandal than to touch any novel research.

Re: Andrew McCalip demonstrates synthesis of LK99

#214
post #161

Earlier quoted context omitted.

> Questionable methods get mass debated in public. By people who don't know what they're talking about. You're seriously underestimating the level of expertise that it takes to professionally assess most research. It wouldn't be unusual for there to be a small handful of people with that ability in the world.

What matters is the discovery of new things that are true, that we can do engineering with. Publication by youtube & arxiv doesn't have to be oriented at public consumption - it works just as well when it's by-researchers, for-researchers. Except without gatekeeping, people like McCalip can participate too. Who cares who's sitting on the sidelines? In post-peer-review, industry-funded academics rush a paper to a prep…

Agreed. What I don't understand is the gatekeeping. Why would the actions of outsiders have any bearing on "real" research? Are they worried that grant money will get redirected toward shallower, more glamorous groups?

Re: Andrew McCalip demonstrates synthesis of LK99

#215

Earlier quoted context omitted.

Exactly, that Russian anime girl shud not be getting any credit, I don’t say this because of her anonymity but because of her absolute refusal to take a video or do absolutely anything that can make outsiders trust her claims.

I don't understand why she would be like this. Why would anyone hold back the production process for a material that could change humanity forever?

[deleted]

Re: Andrew McCalip demonstrates synthesis of LK99

#216

Earlier quoted context omitted.

How’s Nitter still working after all these recent restrictions from Twitter?

https://github.com/zedeus/nitter/pull/927

Thanks, but do you have more info on this new authentication method? Is Musk suddenly OK with it? What has changed?

Re: Andrew McCalip demonstrates synthesis of LK99

#217
post #80

Earlier quoted context omitted.

World first replication was done by Iris Alexandra using her own accelerated process and there is no way Varda Space could have beaten her.

A worthless replication. Grainy photos of supposed samples floating. When asked for videos she just insulted the people asking for videos to no end and to date has not provided any. No measurements provided either.

It wasn't even a replication by their own admission!

https://nitter.net/iris_IGB/status/1685774956330635264#m

They won't publish a preprint on their version because they think it would be "unfair"!

https://nitter.net/iris_IGB/status/1687020011548770304#m

Every post this person makes throws up more red flags. I have no idea why people believe any of their claims besides "haha anime girl"

Re: Andrew McCalip demonstrates synthesis of LK99

#218
post #157

Earlier quoted context omitted.

Why? Simple, there's lots of mentally ill people on this planet. Anime profile pictures are usualy a redflag. These kind of people should only be ignored since they never want to cooperate.

> Anime profile pictures are usualy a redflag. These kind of people should only be ignored since they never want to cooperate. A lot of them are simply trans and tired of dealing with constant harassment campaigns directed towards their gender identity. Of course they're wary about cooperations with people they don't intimately trust.

There would have to be a lot of cognitive dissonance to be illegally trans yet self identity as "ethnically soviet" on a social media bio.

Re: Andrew McCalip demonstrates synthesis of LK99

#219

Earlier quoted context omitted.

Yes, exactly. And getting approvals from three layers of management. You know, science. I'm pushing back against academia because I think the system is pretty much a mess. Academics believe that we got all the nice technological innovation because of academia. I think it is despite academia. Most money going there is just wasted on writing not what you think is right but what you think will be published, waiting for…

I’m in an academic lab right now. I have never once had to get approval from three levels of management to do any experiment, nor have I ever heard of anyone having to do that. I’m not even sure who would be three levels of “management” above me.

I'm sorry but your facts don't comport with my preconceived notions so you are wrong prima facie.

Re: Andrew McCalip demonstrates synthesis of LK99

#220
post #157

Earlier quoted context omitted.

I don't understand why she would be like this. Why would anyone hold back the production process for a material that could change humanity forever?

Why? Simple, there's lots of mentally ill people on this planet. Anime profile pictures are usualy a redflag. These kind of people should only be ignored since they never want to cooperate.

[flagged]
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