Twisted Graphene Could Power a New Generation of Superconducting Electronics (sciencemag.org) 27
sciencehabit shares a report from Science Magazine: In 2018, a group of researchers at the Massachusetts Institute of Technology (MIT) pulled off a dazzling materials science magic trick. They stacked two microscopic cards of graphene -- sheets of carbon one atom thick -- and twisted one ever so slightly. Applying an electric field transformed the stack from a conductor to an insulator and then, suddenly, into a superconductor: a material that frictionlessly conducts electricity. Dozens of labs leapt into the newly born field of "twistronics," hoping to conjure up novel electronic devices without the hassles of fusing together chemically different materials. Two groups -- including the pioneering MIT group -- are now delivering on that promise by turning twisted graphene into working devices, including superconducting switches like those used in many quantum computers. The studies mark a crucial step for the material, which is already maturing into a basic science tool able to capture and control individual electrons and photons. Now, it is showing that it could one day be the basis of new electronic devices.
Superconductivity (Score:5, Informative)
And the advantage over conventional... (Score:3)
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Instead of requiring exotic materials and alloys, a graphene superconductor is made with sheets of carbon, a material that's a lot easier to obtain than Yttrium used in many superconductors. Especially since many homes and offices already have tons o
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Twistphene (Score:2)
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How twisted? (Score:1)
Are we talking light bondage twisted, maybe a riding crop, or are we talking strap 'em down, hooked to an air hose run to a septic tank grab the cattle prod twisted?
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Yes, and there's a whole museum in Brazil dedicated to this but you won't get "mainstream" archaeology to pay any lick of attention to this.
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No, all that proves, is that jars have been washing up. The rest is your wishful thinking.
Can as well be that the ocean currents from Roman settlements in Europe / northern Africa simply end up there.
This would suggest(TM) that you need to stop making it a religion.
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Not sure how or why a totally unrelated discussion about statues of Columbus popped up, out of nowhere, in comments on an article about twisted graphene research and applications, but, even for /., this is wandering way too far off-topic.
Why have a lead artilce at all, if there is no need for a post/comment to have even a vague association to the article, and/or a preceeding comment? Much as I hate to see restrictions, at some point moderation needs to step in.
Archaeologist to answer your "Bay of Jars" (Score:1)
I think you responded to the wrong thread or something.
But I couldn't help but notice the words "mainstream archaeology" used together as if there is some sort of alternative to archaeology. Archaeology is done using methods of science. One is either doing scientific archaeology or one is not. There is no "alternative" so we just say "archaeology."
But there's a reason why your "bay of jars" doesn't have a Wikipedia entry. And it's very closely related to why archaeology doesn't pay any lick of attention to
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Right. For those who do not know about it look into the "Clovis First" dogma.
Please post some technical details ... (Score:2)
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Huh? I'm not following,.
Can you put that into a car analogy?
The researchers also looked for help in Hollywood (Score:2)
Researchers contacted M. Night Shyamalan to seek new methods of twisting the graphene.
And here's the downside (Score:2)
Magic angle graphene devices are unlikely to challenge consumer silicon electronics anytime soon. Graphene itself is easy to make: Sheets of it can be stripped off blocks of graphite with nothing more than Scotch tape. But the devices must be chilled nearly to absolute zero before they can superconduct. And maintaining the precise twist is awkward, as the sheets tend to wrinkle, disrupting the magic angle. Reliably creating smoothly twisted sheets even just 1 micron or two across is still a challenge, and researchers don’t yet see a clear path toward mass production. “If you wanted to do a real complex device,” Jarillo-Herrero says, “you’d need to create hundreds of thousands of [graphene substrates] and that technology doesn’t exist.”
Yes, this only works at absolute zero