If this material does just what they say it does, what would it revolutionise? Or as the article talks about, is this just a pointer at other possibilities that would be the real game changers?
Video games will be more realistic.
Superconductor news: What’s claimed, and how strong the evidence seems to be
181–190 of 501 posts
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#182Earlier quoted context omitted.
Much of the power consumed, and heat dissipated, by conventional processors comes from moving information between logic elements rather than the actual logic operations. Because superconductors have zero electrical resistance, little energy is required to move bits within the processor. https://en.wikipedia.org/wiki/Superconducting_computing#Fund...
Incorrect. https://www.ti.com/lit/an/scaa035b/scaa035b.pdf This document explains it well. (The resistance of the interconnect is not even mentioned as a significant component of power consumption.)
You can synthesize superconducting FETs though: https://link.springer.com/chapter/10.1007/978-94-011-1918-4_...
Obviously this isn't much benefit since the vast majority of applications can't be liquid nitrogen cooled (and computing has followed "what consumers will buy" on progress).
That changes substantially if superconductors will keep working when put in my pocket.
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#183This is an extremely useful summarization of the original paper. > The authors believe that the modified/strained structure of their material creates a large number of “quantum wells” between particular lead atoms and the adjacent oxygens of the phosphate groups bound to them, in effect making a two-dimensional “electron gas”. They propose that electron tunneling between these quantum wells, which are between 3.7 and…
Short answer: talk about quantum wells in this context is meaningless .
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#184New scientist got a reply from the authors and a few other experts: https://www.newscientist.com/article/2384782-room-temperatur... >Kim has only co-authored one of the arXiv papers, while the other is authored by his colleagues at the Quantum Energy Research Centre in South Korea, some of whom also applied for a patent on LK-99 in August 2022. >Both papers present similar measurements, however Kim says that the seco…
Seems interesting that there appears to have been a patent application for LK-99 (https://patents.google.com/patent/KR20230030188A/en?oq=WO202...) filed two years ago in August 2021 (a year earlier than the article suggests).
If true, it seems wild to sit on this kind of discovery for over two years.
Update: Seems like there might be even more history given the name LK-99 apparently comes from the names of its discoverers Dr. Lee and Dr. Kim, and the year of its discovery, 1999 (https://kr.linkedin.com/in/ji-hoon-kim-03508b80).
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#185If this material does just what they say it does, what would it revolutionise? Or as the article talks about, is this just a pointer at other possibilities that would be the real game changers?
Video games will be more realistic.
... In the sense that reality will become more like it is in video games?
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#186New scientist got a reply from the authors and a few other experts: https://www.newscientist.com/article/2384782-room-temperatur... >Kim has only co-authored one of the arXiv papers, while the other is authored by his colleagues at the Quantum Energy Research Centre in South Korea, some of whom also applied for a patent on LK-99 in August 2022. >Both papers present similar measurements, however Kim says that the seco…
Seems interesting that there appears to have been a patent application for LK-99 ( https://patents.google.com/patent/KR20230030188A/en?oq=WO202... ) filed two years ago in August 2021 (a year earlier than the article suggests). If true, it seems wild to sit on this kind of discovery for over two years. Update: Seems like there might be even more history given the name LK-99 apparently comes from the names of its disc…
Naive question: is that the original content of the application from 2021, or could it have been updated later? Is it the same material as LK-99 in the published paper?
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#187Earlier quoted context omitted.
That depends. If it super conducts, but it isn't useful in the real world, then we will be waiting for theory to - hopefully - give us some insight into how to improve things to useful. This only can carry a small amount of current. I'm not sure how to figure out what small means (numbers are given in the article if you know how to use them!), but if the losses using regular wire are less than the energy needed to ma…
> If it super conducts, but it isn't useful in the real world, then we will be waiting for theory to - hopefully - give us some insight into how to improve things to useful. This only can carry a small amount of current. Thank you for this. > This is made out of lead. Even if it is useful for transmission, the difficulty of working safely with lead in a factory may mean it is impractical. Have you been to a hardware…
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Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#188Earlier quoted context omitted.
> They propose that electron tunneling between these quantum wells, which are between 3.7 and 6.5 Ångstroms apart, is the superconducting mechanism. That is a very strange explanation. As someone who has done a decent amount of solid-state physics work, I would expect the explanation to involve a mechanism for pairing of electrons. Mere tunneling between quantum wells has been a staple since the "metamaterials" of th…
Are you referring to a Cooper pair?
Yeah, that’s the generally used explanation for superconductivity
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#189Earlier quoted context omitted.
A lot of people are talking about very cool practical use cases, but I'm here just thinking 'all of our trains could float, wouldn't that be neat?' [0] [0] https://en.wikipedia.org/wiki/SCMaglev
I'm excited about the ball bearings.
New era of sound proofing too: RT superconductors and neodyminium magnets levitating your inner-room separate from the building.
Re: Superconductor news: What’s claimed, and how strong the evidence seems to be
#190Earlier quoted context omitted.
You say to do WHAT to the best piece of sample they synthesized?
Scope of the claim. This is world changing. Shoot the first video, then get the dremel/pliers and cut that large bit off. It would be worth it, because if this works at all, then it's vital to prove it. We'd be having a very different discussion if that small piece was umabiguously floating and remaining locked in place.
> it's vital to prove it [asap]
Is it? What do they care if it takes other labs a week to reproduce?