/sci/ - Science & Math

cool source bro

>>15631946
>>15631941
>simulation paper
another nothing burger

Some confirmed korean experiments

-123 degrees

>>15631955
Is this the original paper or what?

>>15631941
>university of CO
post the sauce anon

>>15631946
Unironically zoom in. Those units are huge. Copper has resisitivity on the order of 10^-8. Copper would mog that chart as its presented.

>>15631955
>10^-4 ohm/cm
So...not a superconductor.

>>15631972
https://arxiv.org/abs/2308.00698
Its just another simulation paper....

>>15631991
>it is expected to realize the true potential of room temperature, non-contact superconducting magnetic levitation in the near future
Just 2 more weeks!

I'm predicting they'll get reistance 0 at -60 by the next week by finding ways to introduce impurities in it

>>15631975
What matters is the behavior of the R/T curve. Normal shit doesn't all of a sudden drop to super low conductivity all between 200 and 250K. Whether or not it's a superconductor, there's some weird shit happening in these rocks.

>>15632021
low IQ retard post, stop talking about things you dont understand your middle school gender studies blue haired tranny teacher said dumb fuck.

>>15632021
There is literally no confirmation if this shite is a sc at any temp.
Now the new cope is, it will somehow help us find new hugh temp sc. Lol.

experimental error: the thread

>>15632027
>Normal shit doesn't all of a suddent drop to super low conductivity

There is a phase change, yes, and it is odd, but then again, these guys have no idea even what their material is. Their xray crystallography data is inconclusive and doens't really support their proposed structure. Their chemical reactions in the paper don't balance. They've thrown some shit together in an oven and aren't sure what they baked and how to replicate it. Its not really that odd that an inhomogenious mystery meat of metals has on odd R/T curve.

The most important thing is that there is zero evidence of superconductivity. The whole reason for interest was supposed to be superconductivity, but they have no shown that. What they *may* have discovered is some sort of new metal-insulator transition. More than likely all they made is some sort of inhomogeneous conductor.

>>15632027
Boundary effects between superconducting crystal grains? Superconducting patches embedded in an insulator, without always having a perfectly conducting path?

>>15632069
>it literally levitates and has been proven to levitate by 5 separate groups

Kim Hyun Tak, the most renowned researcher in the group, interviewed that it's not trivial to measure that something actually has 0 resistance because at that point it becomes a matter of reducing instrumental noise. he again doubled down on the claim that he thinks it's superconductivity but who knows what the answer really is.

>>15631941
Guys its actually over now, for real :/
See >>15631826

>>15632180
I dunno, when I just take a superconducting cable and slap a multimeter on it it just works. Why don't those guys just do that.

>>15632184
>“They admitted it does have zero resistance”
>Overbros: hahaha fucking retard we won!
Backbros… what have we done to our over brothers? Their minds look like Andrews 13 hour sample now…

>>15632224
>Coping this hard with a typo

>>15632228
>thinking overbros apparent retardation is from a typo
If only you knew how bad things really are overbro…

>>15632289
I know your IQ is not high enough to read long text so I'll summarize it for you:

Basically it says that the motherfucker blames none-zero resistance on "noise". He claims he got 0 resistance at some point but never documented it too. On top of that if you read further down he's not even aware of MIT materials

Hopefully that cleared it up for you, my down's syndrome friend

>>15632048
>shite

the eternal anglo

how exactly are people able to simulate this? can't we just use simulations to discover everything if it's this easy?

>>15632611
i mean its been done before plenty of times at this point as computers have gotten better. There's a reason alot of CS majors work in chemistry.

>>15632289
>>15632321

Don't trust the ai-auto-generated translations lol. The translations are so bad.

There are better translations on Twitter I am sure. He never stated that he didn't "write down." I am guessing that is a bad transition of 적다 lol

>>15632666
>The translations are so bad.
How do you know?

>>15632611
People do that, but there are an infinite number of materials that you can simulate. Plus, it's common for simulations to make approximations (necessary when what you're trying to compute is uncomputable, i.e. nearly everything Quantum) which can break under certain conditions.

>>15632678
i wonder...

>>15632678
because he is korean retard

>>15632611
Because the way simulations work is they write garbage python and then tweak it untill it spits out a positive result and then they publish it. Academic code is a complete farce

>>15632694
>>15632696
What I'm getting at is why doesn't he release a TL / summary himself, brainlets

>>15632704
>you must be an artist to be able to critique art
Let me guess, you're vaccinated?

>>15632760
I was vaccinated four times, so what?

>>15632783

>>15632013
>as low as
Shouldn't they be shooting for the opposite?

>>15632289
It's a 1 Dimensional superconductor and only exhibits magnetic field rejection when the magnetic flux is perpendicular to superconductor Pathways this explains why no matter how strong the diamagnetic effect is it won't lift its tail from the ground, it will lift itself upright until the ever increasing magnetic flux permeability caused by aligning it's superconductor Pathways results in enough dead weight it can no longer lift itself, resulting in a slant.

>>15631950

>>15632783
Not enough, get another four covid boosters.

>>15631941
So its not an RTSC? Its over backfags, go back to /b/ and /pol/ we dont need your >>15632612 kind here on /sci/.

>>15632168
And? It's not special, it's not hard. It doesn't even demonstrate the same kind of levitation as you'll see in something like cryogenic YCBO, this substance is plainly affected by field lines, tends to levitate over specific spots and snap back to them if you move them laterally, that's not the meissner effect.

>>15632809
Makes sense atleast to a nitwit like me, why does it exhibit this behavior? Also, would there be any way to correct this behavior so that it would still float or is it basically impossible/hard to do and use.

>>15632848
Hey kid, get off our board, thanks.

>>15632840
Why is this a gif

>>15632871
Nah this is my board now bitch
Jew

>>15632848
Lmao gtfo anti-cunny tourist.

>>15632289
This is retarded cope. Yes it's technically impossible to measure actually zero resistance. It's not hard to measure below the resistance of ordinary lead. If your machine can't go lower than 10^-6 ohm M, it can't even tell the difference between copper and iron. And we know such instrumentation exists. Cryogenic graphene has been measured with resistance at or below 10^-25 ohm M. And you can't get below 10^-6? Fuck off. A discontinuity of resistance vs temperature is not proof of superconductivity, measurement of superior conductivity is evidence of superconductivity.

>>15632875
You can't stay here unless you know basic algebra.

>>15632867
Read the Sinead Griffin paper, she explains why it superconducts in a single direction

>>15632883
Just take a look at those samples: full of impurities. It would be a waste of time to measure resistance before coming up with a far better manufacturing process.

>>15632783
Yikes....
Opinion discarded.

>>15631941
>no sources
>simulation
Surely this level of delusion and cope is not healthy. Go outside. Accept that it's over. Move on. It's not that hard.

>>15632907
Sure, it's got impurities. But why is it WORSE than lead, if it's at least partially a super conductor? I'm not asking for a commercially viable product here, I'm asking for proof that this stuff is better than an ordinary wire.

>>15632917
Do you get paid every time you post this? Don't you think that the hundreds of thousands of PhD level physicists that have been studying this would have noticed this and dropped this instantly?

>>15632933
>Don't you think that the hundreds of thousands of PhD level physicists that have been studying this
That's a great exaggeration, there's probably not even a thousand people in the world who have participated in validation efforts. But for the record, yes, lots and lots of people with PhDs waste their entire academic careers on stupid shit that they should have given up on years before they actually did.

>>15631941
>at -123 degrees
>room temperature SC

>>15632958
You don't have to participate in validation in order to read the papers, which are freely available. There are probably very few physicists that have not given the data a look. So how do you explain that all of these people that are smarter than you have not immediately called bullshit on this supposed discovery, based solely on your one talking point?

>>15633009
>So how do you explain that all of these people that are smarter than you have not immediately called bullshit on this supposed discovery, based solely on your one talking point?
They have.
https://www.livescience.com/physics-mathematics/did-scientists-really-create-a-room-temperature-superconductor-not-so-fast-experts-say
It's just a phase change. The material has some interesting electronic and magnetic properties, but it has not been shown to super conduct and therefore the experts say that it's quite probably not a super conductor.

>>15633036
Retard alert. Take your FUD back to pol

leaked. I won't say more.

>>15633051
>>why don't experts say it's not a super conductor?
>they do, here's an article where scientists who study magnetic materials explain why they think it's not a super conductor
>>go back to pol!
Kill yourself, you anti-intellectual waste of carbon.

>>15632048
chinks confirmed it you snaggletooth fuck

>>15633055
DO NOT OPEN THIS. FUCK!

>>15633055
looks more fake than 90s UFO videos

>>15633055
obvious fake only a retard couldn't spot this

or a boomer

>>15633055
screw super conductors, I want to know how this guy got superhuman hand stability.

>>15633036
The article you posted not only doesn't support your claim that scientists dropped it, but it says the exact opposite
>starts the article by saying that tons of experts are trying to replicate it
>finishes by saying "Because if people didn't think it was promising, they wouldn't be trying to reproduce it."

What is your theory as to why all of these scientists overlooked this incredibly obvious thing that you so clearly believe debunks lk-99?

>>15631941

>>15631975
Those units are hilarious lol. But they may not have the equipment to properly measure with precision very low resistivity especially without pushing huge current. One of the Korean papers did claim "order of 10^-10 to 10^-11" ohm/cm.

>>15632917
>But why is it WORSE
Why are you claiming it's worse than lead if lead would also have the same measurements if their equipment isn't precise enough? Do you, perhaps, have an agenda?

overbros.... we fucking lost

>>15631941
>-123 degrees
I thought this was supposed to be a room temperature super conductor?

>>15633289
you dont keep your house at -123? I get sweaty if it's higher than that.

>>15633213
The replication efforts started before the lack of super conductivity was verified. Now we know. Interest is already petering out.

>>15633254
Yeah man, I'm totally trying to mislead you about something happening on the other side of the planet that's totally unaffected by your or my beliefs regarding its liklihood of success

>>15633332
Are you saying that there aren't people that do precisely that everywhere on the internet?

>>15633332
>totally unaffected by your or my beliefs
Your bet on "no" will be affected.

The server is .gg/6snot
incase anyone wanted to know

what's the difference between reducing resistance to zero versus reducing it to an infinitesimal value?

What I've seen over the last day is leaning more and more toward we're back. This could be it. I'm still holding my hype in check.

Holy shit how hard is it to synthesise the material and test it conclusively? Are chemists fucking retarded? Stop fucking around and just tell me if it has 0 resistance at room temperature or not?????

>>15633619
It's real, there are just a bunch of faggots who don't want it to be. We just need to make better versions of the stuff. Right now we have shitty rocks that we make inconsistently that are superconducting at room temperature. What we need to do is embrace both theory work that can help direct research and a brute force refinement so we can start making actual devices out of RT superconductors.

I tried to resist, but the hype got me, I don't think I can take this not being real bros...

>>15633055
this looks so cgi bro, fuck off. even though even drooling retards can make pretty looking graphics, animation is still hard to do for a reason, and this guy sucks cock at it

>>15631946
so why does it just drop off at 225k?

>>15631955
>>15631966
>>15631983
Seething and dilate

when everyone tells you it's over always remember you can always be so back

POOS FAILED THEIR THIRD ATTEMPT

LK99 IS LOOKING FAKER EVERY DAY

>>15634142
>POOS
Dropped it there

Can I do it in my garage?

If it's fake then how did this happen?

>>15634115
>Takes a decent picture of the monitor instead of a screenshot
Based Koreans

>>15632802
That's still a big improvement from what is currently used. An MRI requires -442.9°F (-264°C) to function.

https://twitter.com/CondMatfyz/status/1687578006980632576?s=20
Are we expecting anything interesting from this?
Roughly 2 hours left

>>15632611
>Anon discovers why people have been calling bs on the "theory" papers

Congratulations

I think we should really talk about the historical implications of Koreans getting this breakthrough. I think it's a waste, this should be a Japanese, Russian or a Western breakthrough. For all of human history it's Korean, and not even North Korean.


I mean Korean is still better than Chinese or god help us all Indian. But still really bad. Instead of having an Armstrong Conductor, we are going to be dealing with a Lee KumSoek-super conductor for the next thousand years.

>>15634187
it's OVER for you, ytboi

>>15634163
nigbro, that is the shiniest shit i have ever seen. that is not lead at all. that is literally a fragment from the iron hammer he used to break open the quartz tube

>>15634219
So are you just a drooling retard or something?
This was the setup.

Enough of the memes is this shit fake or gay

>>15634243
>is this shit fake or gay
Neither

>>15634108
They don't know. It has been observed in experiment as well

>>15634142
This literally means it is likely true

>>15634142
The poos literally just keep synthesising a huge LK-99 block and put a magnet under it, they are retarded and shouldn't be taken seriously, look at their pictures.

>>15634174
So wait, are they doing an entire batch at the same cooking time or are they pulling out ampules at different times? Andrew only got results from his 5 hour cook

>>15634187
>he doesn't know it's leaked darpa tech
ngmi

how long until the youtube livestream chinks open their over

>>15634280
https://twitter.com/CondMatfyz/status/1687711356445745153

they just pulled it out of the toaster, a couple more hours to cool I would think

>>15634295
Seems a waste of time to do one big batch instead of simultaneous smaller batches with different cook times

>>15634284
This is true, but why would they release this shit now, didn't Kelly Johnson from Lockheed say it would take an Act of God for any of this shit to ever leak to public?

>>15634295

When I wake up I want to see floating chips!

>>15634295
Loving how I get to stay up until the sun rises, and I'm always rewarded with floating rocks
Can't wait for another one!

I don't really get why we don't get a impedance vs frequency plot, for different temperatures. IEEEfag'ere

IT'S HAPPENING:
https://nitter.net/CondMatfyz/status/1687711356445745153

>>15634301
some glowie think tank probably did a risk calculation to figure out the latest time the superconductor could be deployed that would still prevent climate change from fucking everyone

>>15634344
>quick cooling
Its over
He broke the Cu chains with that

>>15632027
>Normal shit doesn't all of a sudden drop to super low conductivity all between 200 and 250K

>>15634115
Can I have the fucking source please?

>>15634366
https://www.kci.go.kr/kciportal/landing/article.kci?arti_id=ART002955269#none

>>15634354
>manmade climate change
Imagine falling for this.
NGMI.

This is probably the biggest discovery of our lifetimes. Even if there are some blips in recreating it, it only proves its a matter of time

A one-dimensional superconductor with a 250 milliamp critical current limit, brittleness, and room temperature superconductivity under ambient pressure would not have any applications. The one-dimensional nature would make it susceptible to fluctuations and impurities, hindering its stability. The low critical current limit would exclude its use in large-scale applications like power transmission, where much higher currents are needed. Additionally, the brittleness of the material would make fabrication and handling extremely challenging, further proving its usability in commercial devices. In practical terms, these constraints would render the material unusable for any real superconductor applications...

GET IN HERE, FULLY LEVITATING SPECIMEN FROM KOREA:
https://nitter.net/i/status/1687728296727920640

IT'S HAPPENING!!!

>>15634427
It's real critical current is most likely orders of magnitude higher, it gets it's super conductivity from Pb (2) substitutions which are higher energy and hence unfavorable due to the high temperature of reaction meaning the samples that have been made so far have a low proportion of Pb (1) Cu substitutions in proportion to Pb(2) substitutions, higher energy substitutions aren't enormous difficulty to get around but it does mean that to produce the commercially viable conductor that has a high critical current the process will not be the same as the one to just make bulk samples right now

>>15634427
>its real but its nothing
god the cope

>>15634461
*gets it's superconductivity From Pb (1) substitutions

>>15634447
> douyin
come on nigga

>>15634461
>>15634465
I have a baseless theory but I think since the material isn't exactly well put together, by chilling it we can compensate some of the areas close but not quite to being like the room temperature layout of atoms described in the paper.

https://www.zhihu.com/question/613850973/answer/3151388707?utm_id=0

New floating rock video

>>15634486
Interesting but what other ways could this be explained? Obviously room temp and ambient pressure, clearly not suspended by a string or anything, and I'm fairly certain thats one magnet. They havent switched the poles of the magnets below in the video, but this is still extremely interesting none the less. Im not gonna pretend I'm and expert so can anyone knowledgeable anons let me know what could poke holes in this being a superconductor/diamagnet or whatever? All I know for sure is rock floating on both poles means we're back.

>>15634486
Best fake so far, if it wasn't that it was recorded in someone's living room I could actually have believed it

>>15634447
>>15634486
So that's totally fucking floating and flux pinned, is this the final nail in the coffin for overfags?

>>15634500
One single string attached left to right

>>15634501
Well that is very suspicious, how is it faked then? I am this >>15634500 stupid anon and want to not be tricked so any help is appreciated even if rude

>>15634486
Pay attention to this little black line.
I don't know if this is just a piece of the LK-99 that's kind of sharp and going out behind the main sample, or if it's something suspending it from behind, but it comes in and out of focus twice.
I'm not saying this means anything, it's just something to notice.

>>15634507
Did not see this when I posted >>15634508

>>15634500
Pretty much since the second paper released that wasn't Kwon's leak, it was definitely a superconductor. The problem is the critical current density makes it a piece of dogshit. There's other materials out there though beyond Copper doped Lead.
Anyways, the Koreans were right. Physicists don't know shit about finding superconductors. Only the chad experimental chemists and Nikolay Bogolyubov's long-forgotten theory of superconductivity shunned by western physicists can save us.

>>15634527
even this "dogshit" will be enough for superconducting supercomputers
that's fine by me

>>15634486
WE ARE BACKER THAN BACK

>>15634562
1-d won't make anime real, friend
some of us need more

>>15634509
Overbros really clutching at straws now, this is a good sign. I'm starting to get hype backbros

>>15634486
If it's real why does it go back to the position it's started in, like it "remembers" it's initial position? You could say it's going to the middle of the field but why is it respecting its initial vertical position and rotation?

>>15634486
how are you niggers so retarded? this is no different than the other shit that was suspended by wire and then angled the camera to hide it.

all they have to do is rotate the magnet around, then remove the sample, flip the magnet and place the sample back on. why can no nigger making this nigger compound do that? why do they only do one thing at a time? you damn well fucking know why, you dumb nigger.

>>15634631
No no I'm not saying it's over, trust me.
I just don't want us to get taken by a fake, legit shit only.

>>15634638
I don't believe you, say 'we're so back' right damn now!

>>15634639
Most of the videos do exactly that...

Any videos of a "floating resistivity curve" yet? Or floating heat capacity?

We are so back

>>15632961
The room is at -123 degrees. It's legit.

>>15631950
source on the cutie?

>>15634881
fable 4

>>15631941
>at -123 °C
so it's a nothingburger?

>>15632611
you can simulate only simple situations, but it's useful.

https://www.youtube.com/watch?v=zVkVBvo8_GM
when I went to bed it was still cooking
now I come back and it's ended with a "stream recording not available"
anyone here saw if they pulled it out?

-123 C is almost south pole temperature. Holy fuck, this may have potential.

>>15631964
thats considered high temperature for a super conductor.

>>15632866

Flux pinning

>>15631946
>not a logarithmic graph
what the fuck are you doing

>>15636656
There are already other super conductors that operate at higher temperatures

>>15632289
>We didn't write it down because we knew it
I kneel.

bros we are so fucking dead
2 days and all we got was a doctored video

>>15634427
>250 milliamp critical current limit,
you dumb fuck, you're just repeating shit like a parrot, you have no idea what the fuck you are talking about do you? since nobody called you out on your bullshit you though you were right. fucking idiot

>>15637037
Not at ambient pressure. Some cuprates operate at about the same temperature and pressure though.

>>15634427
even if it has zero applications its still a huge deal because it opens the possibility for materials that are actually practical

>>15637685
People said this in the late 80s when the first superconductors were found, after a few years after interest had died down and only the diehards were left.

Now that lk99 is officially over, what will be the next we are back? I need to be excited about something

>>15639031
Waifus getting online after gpt5 release

>>15639031
I’m about to publish a paper proving that P=NP

>>15639298
you are edging flat-earth territory my dude

>>15639340
there are many people who are so invested in the status quo that any changes to the status quo are perceived as threats to the ego

>>15639374
Cope

>>15634508
>>15634486
LK-99 will never float, any video or picture where you see a fully levitating rock means it's a fake.

>>15639393
seethe harder, it's funny
bet you were hoping to get tenure someday
now the whole world will be able to see you didn't actually understand what you were doing
fucking grifter lol

>>15639448
>get tenure someday
Nah, I got my MS and went into industry, academia has devolved into a miserable rat race over the past ~30 years and I'm glad I decided not to even do a PhD given how much a slog that can be.

LK99sisters, can we stage a comeback? I'm hoping we can...

>>15639944
I can see how that can be a source of frustration as well
but you could be looking at this from another angle - some guys in a literal basement lab made something worth talking about, worth replicating
they lost, and then sidestepped, the rat-race
you can, too, maybe

>>15632013
So this room is in the arctic?

>>15641467
>Is this room in the room right now?

>>15640211
Yes
Just couple more weeks and some more cgi chinese garbage

Who tf cares if it's just high temp but not room temp

>>15641483

>>15631941
> confirmed by the University of Colorado
> A college ranked #97 in the US

Still waiting.

>15642222
>it's only one of the top 100 universities in the US, wait for the REAL experts from Twitter to weigh in
the cope is getting desperate lmao

>>15641467
>Aircon in insulated room

>>15631941
>oh look i did such a real simulation that all i can get is a fucking graph
i hate equation fags so fucking much, thats not a simulation

>>15634486
>rock floats
woah so cool! now do something meaningful soitits

>>15634881
it's a tranny