necrovore Posted July 26 Report Share Posted July 26 https://arxiv.org/abs/2307.12008 Looks like three researchers in South Korea have discovered the holy grail of superconductivity. I saw this on Hacker News. People in the Hacker News comments seem to think it should be relatively simple to confirm or not, and might take a week or so. If it is independently confirmed, it will be big. If it is not confirmed, it will be the next Cold Fusion. I think it's exciting, but these days I worry that, if it works, it will fall into the wrong hands, like Project X (the one in Atlas Shrugged, not the Elon Musk one). Boydstun 1 Quote Link to comment Share on other sites More sharing options...
StrictlyLogical Posted July 26 Report Share Posted July 26 (edited) interesting Edited July 26 by StrictlyLogical Quote Link to comment Share on other sites More sharing options...
Grames Posted July 28 Report Share Posted July 28 meh. Sounds too good to be true. But if it is a fraud it is too dumb to believe because synthesizing the material is relatively easy and the experiment will be performed by others very soon. So something is there but perhaps it is just a large diamagnetic effect. Quote Link to comment Share on other sites More sharing options...
Boydstun Posted July 30 Report Share Posted July 30 Quote Several details in the South Korean team’s preprint papers have raised concern. James Hamlin, a physicist at the University of Florida, points out oddities in a measurement of LK-99’s magnetic properties that gave him pause. “It doesn't really look much like my experience of measuring” these properties, he says. Doug Natelson, a physicist at Rice University, spontaneously spotted something even stranger while going over the preprints during an interview for this story. Both papers include a data plot detailing LK-99’s magnetic properties. Both plots were sourced from the same dataset and should thus be identical—but the plot in one paper has a y-axis with a scale that is about 7,000 times larger than the other. This kind of inconsistency does not prove anything, but at minimum, it suggests a worrisome shortfall in proofreading. Scientific American reached out to the South Korean team for comment but did not receive a response by the time of this story’s publication. Getting definitive answers about what’s really happening in LK-99 demands patience, as eager independent teams attempt to replicate the South Korean team’s work. Because the recipe for LK-99’s synthesis is straightforward, results could come in the next few days or weeks. 27 July 2023 Quote Link to comment Share on other sites More sharing options...
necrovore Posted July 30 Author Report Share Posted July 30 I've read reports that the paper was published to Arxiv without permission, which may explain why it has errors. I've also read that Argonne National Laboratories is among those trying to reproduce the results. Boydstun 1 Quote Link to comment Share on other sites More sharing options...
EC Posted July 30 Report Share Posted July 30 (edited) There's another way to do this but I won't go into the details here but it was discussed in an article in the 19fortyfive online magazine involving technology that is being "secretly" held by the Navy. Edited July 30 by EC Quote Link to comment Share on other sites More sharing options...
EC Posted July 31 Report Share Posted July 31 (edited) 1 hour ago, EC said: There's another way to do this but I won't go into the details here but it was discussed in an article in the 19fortyfive online magazine involving technology that is being "secretly" held by the Navy. I point this out specifically because I had previously reached the same idea for the process for room temperature conductivity that was outlined in the Navy documents but had never spoke of it then read that a few years years back and learned they had a patent for both that and another technology I had independently already thought of in the same paper. Edited July 31 by EC Quote Link to comment Share on other sites More sharing options...
EC Posted July 31 Report Share Posted July 31 This: https://www.nextbigfuture.com/2019/02/if-these-us-navy-patents-are-made-then-we-are-in-a-star-trek-technology-world.html The specific article I meant with all the Navy documents seems to have been deleted from the internet or at least a Google search. Doesn't surprise me lol Quote Link to comment Share on other sites More sharing options...
necrovore Posted August 1 Author Report Share Posted August 1 Another article summing up what has been discovered so far: https://www.science.org/content/blog-post/room-temperature-superconductor-new-developments tadmjones and Boydstun 2 Quote Link to comment Share on other sites More sharing options...
necrovore Posted August 9 Author Report Share Posted August 9 So far it looks like it has not panned out. Lots of people made the material, some observed diamagnetism, none observed superconductivity (as far as I have heard). When the liquid-nitrogen superconductors were discovered, they were much easier to replicate. Quote Link to comment Share on other sites More sharing options...
StrictlyLogical Posted August 10 Report Share Posted August 10 How could it come to this? Korean Air Flight 801 "Save face" of (and for) your superiors... don't speak up. Publish anyway... crash and burn. Quote Link to comment Share on other sites More sharing options...
necrovore Posted October 1 Author Report Share Posted October 1 Research is still going on: https://www.tomshardware.com/news/research-on-lk-99-continues-paper-says-superconductivity-could-be-possible Quote Link to comment Share on other sites More sharing options...
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