SCT Corp is a different South Korean group from the original Korean team working on room temperature superconductors. Dae-Chel Jung is one of the researchers are SCT Corp.
SCT Corp provided a video of one of their superconducting samples fully levitating. SCTL is short for Superconducting Technology Lab and SCT Corp is Superconductor Technology Corp.
There will be a research paper published onto arxiv by this team in the next few days.
The key difference between LK-99’s chemical formula — Pb10−xCux (PO4) 6O — and that of PCPOSOS — Pb10-xCux (P (O1-ySy) 4) 6O1-zSz — is the addition of sulfur, which partially substitutes oxygen atoms.
Measured voltage compared to applied current of pilot ver. sample#2
(measured by Keithley partner company)Measuring equipment: 6221&2182A
Method: 4-probe,
1. Applying DC current from -100mA to 100mA https://t.co/YxSfnjcjUi mode, 100mA pic.twitter.com/WMc52QtaG3— SCTL (@sctlcorp) March 6, 2024
The author of the paper(SCT lab) just said :
he submitted the paper on March 2 but it has not been published yet so he's waiting to hear from arXiv.
AFAIK there's nothing like reject and accept in arXiv? Am i wrong? pic.twitter.com/5cxEB0EnOO
— sejong (@gimjiun79102152) March 6, 2024
The earlier samples from a few months ago had some magnetic effects but the effects were weak.
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This is the “Wright brother momentum” for room-temperature ambient-pressure superconductivity. Having lead in its ingredient list doesn’t bode well for its getting endorsement from the E.U. which banned lead solder due to lead’s toxicity to humans.
The other countries with long-distance travel need will include the U. S. A. and Canada but both of which already possess high-speed transportation means (airplanes and railway, respectively) so maglev trains will have a tougher time to break into this market. Japan is a potential market but there will be a high-temperature superconductor maglev railroad/railway within a few years which is already being built. China has already built its bullet train network but will probably build one cheap very highspeed maglev railroad/railway to connect an inland hub with a coastal hub such as Chengdu with Shanghai.
I certainly want to see non-toxic room-temperature ambient-temperature superconductors being researched and created. We already know how to discern room-temperature ambient-pressure superconductor candidates using Claude E. Shannon’s noisy communication channel in which the information transfer rate not exceeding the noisy channel’s capacity allows error free to an arbitrarily low-rate communications. Superconductivity is just the lossless communication of bundled charge carriers being driven.
Floating milligram flakes of material a millimeter in the air, even at room temperature, doesn’t look particularly useful, but I will be happy if someone can explain why I am wrong. Is this the Wright brother moment and we will see cheap maglev trains in the near future?
I’m floating rocks about that high right now! When it’s humid I just call that concrete. That said, it would take even me a few tries to turn right around and ask 6 trillion Won to do something with it as a next step. Things are going right in S. Korea. It would still be great if the world cooked up lots of low power ventures or oddly large electrical crystals to energize over this class of superconductor.
That resistance chart is a joke. It’s just slightly above the noise floor. This whole mess reminds me of the Korean stem cell scandal around 2006. It’s making me think there’s something seriously wrong with the culture of science in Korea.
I’m not so sure. US orthodoxy is mostly a polished front, there are huge inefficiencies and perverse incentives due to an unnecessarily secretive and |hypercompetitive environment, as well as Ludditism due to hierarchy and fear of reprisals. A lot of our best researchers waste time writing grants, and some of the worst ones get into positions of power for their PMC skills rather than their scientific ones. Despite all the inflated malfeasance, the Korean stem cell studies still ended up being a major advance in the field, as was the partly doctored studies of quantum computation (Shor) in the US. I don’t know about Korea in particular, but there’s a reason Asia beat us to cheap solar, and are poised to beat us to fusion, AI, and radioastronomy in the near future. While we waste most of our capital in wars and other zero sum and negative sum games, if you are reasonably good at science in places like China you will be well funded and protected so you can pursue open source research and don’t waste your time with finances or being tempted to waste your talent selling out to corporate or a secretive military where genuine progress dies in darkness.