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A room-temperature superconductor? New developments

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Re: A room-temperature superconductor? New developments

#91
post #41

Earlier quoted context omitted.

But fear the news if it is discovered that LK-99 increases AI performance.

I'm sure Elon also has SpaceX or something trying to replicate it as well. He sort of has to jump on each new trend anyhow. In a serious note, superconductors are likely useful in electric magnetic motors and probably in high power electronics and batteries in general, no?

The only thing Elon seems to be interested now is embarrassing himself even further

Re: A room-temperature superconductor? New developments

#93

Earlier quoted context omitted.

It's a conductor of electricity. But super good at it. i.e. - It has zero resistance to electricity. Currently, the best superconducting materials we can create have to be chilled to near absolute zero, which means designing them to work in liquid helium baths. This is expensive, and difficult. If a material can superconduct at room temperature, now we're talking usage in general purpose consumer goods. As for why we…

Superconductor means low resistance. Low resistance means less loss due to heat on a wire. Room temperature superconductor also means more efficient magnets for motors, coils, ending up in cars, MRI machines, etc.

Not just low... _zero_. That's where things get weird.

Re: A room-temperature superconductor? New developments

#95

This is exciting, but I try to maintain my composure. Good luck to all involved. I didn’t know science could be such a thrilling spectator sport.

The fun part about this is how easy things are to grasp even though I have zero background in the science.

It certainly doesn't hurt that this thing levitates.

No need to squint into a microscope, parse a screen full of numbers, or try to make sense of false-color renderings. Either you have video proof of a levitating object, or you don't. The demonstration is as intuitive as it gets, despite the fact that the theory is crazy difficult to wrap one's head around.

Re: A room-temperature superconductor? New developments

#96

Earlier quoted context omitted.

Don’t be. Twitter/X/whatever they’re calling it this week is crawling with Pepe investment bros talking about bullish sentiment because superconductors equals singularity musk crypto AI blah blah blah. It’s bad. It’s really, really bad.

Yeah, hnews is the place to be, nobody here is ever excited about anything new.

Don't be to excited, lest you're branded a bro.

Re: A room-temperature superconductor? New developments

#97

Earlier quoted context omitted.

I have seen three now from China alone. Plus a calculation from some respected institute from today that confirms the theory

Why are they all from China? Why are they able to replicate so much faster than US labs?

I may be wrong, but it seems..

US labs dont find replication work exciting enough. If the effect is genuine, good, if not, life goes on.

Chinese labs are looking to build credibility, so they will benefit by publicly resolving this.

Re: A room-temperature superconductor? New developments

#98
post #78
post #19

I still have a very, very hard time understanding what all of this means. Is there an easy to understand explanation for a room temperature superconductor?

Think your EV is so efficient that you only need to charge it once every 5000 miles.

How does a superconductor help with that? Lithium ion is already 95-99% efficient, same with motors. It would help with the charging cable, but that's not increasing the battery capacity. Off the top of my head the main advantage here seems to be MRIs, maybe also maglev trains, maybe generators? It really depends on the form factor of this superconductor compared to copper wire.

Re: A room-temperature superconductor? New developments

#99
post #18

I'm glad to hear that I'm not the only one who thought that the DFT computational preprints were very promising. Unfortunately, they also indicate that the desired substitution will be very hard to achieve — crucially, the "crush and separate the composite" suggestion a few commenters have made is unlikely to work, since the heterogeneity exists within the same crystal, depending on whether Cu substitutes into Pb {1}…

Could there be limitations to making a large piece of this crystal, so in practice it is never useful?

Re: A room-temperature superconductor? New developments

#100

Earlier quoted context omitted.

It's a conductor of electricity. But super good at it. i.e. - It has zero resistance to electricity. Currently, the best superconducting materials we can create have to be chilled to near absolute zero, which means designing them to work in liquid helium baths. This is expensive, and difficult. If a material can superconduct at room temperature, now we're talking usage in general purpose consumer goods. As for why we…

Superconductor means low resistance. Low resistance means less loss due to heat on a wire. Room temperature superconductor also means more efficient magnets for motors, coils, ending up in cars, MRI machines, etc.

It'll be hard to make traditional motor windings out of this particular material because AFAIK it's a ceramic, but perhaps with thin films on flex PCBs it would be possible.

I'm imagining a future where a superconducting layer on a PCB is just another checkbox you can choose when ordering small runs of boards.

[ ] 1 oz copper

[ ] 2 oz copper (+$2)

[X] 10 micron LK-99 (+$10)

Another thought - I think the first place we'll see this widely rolled out is in IC's (waiting for the Asianometry video on it). IC's are already planar, they're small so exotic materials aren't a big contributor to costs, and they're very power dense. Replacing a metal layer with a superconducting one could enable greater gate density and potentially significant improvements in efficiency. I don't know by how much because switching losses are probably where most energy is dissipated, but it's an incremental change that seems compatible with the process.

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