Gate-defined superconducting moiré devices offer high tunability for probing the nature of superconducting and correlated insulating states. Here, the authors report the Little–Parks and Aharonov–Bohm effects in a single gate-defined magic-angle twisted bilayer graphene device.
While already deployed for the likes of NASA and ESA for several years, Zeiss’ hologram-generating Multifunctional Smart Glass technology is only now gearing up for mass production. The results could be interesting.
Zeiss’s Multifunctional Smart Glass has been a core and expensive bespoke component of space missions for some years now, the tech having been developed primarily for deployment with the likes of NASA and ESA that can afford it for mission-critical uses. Calling what it results in a hologram is a bit of a cheat — these images don’t float free on their own; instead, they’re generated within a thin, transparent layer sandwiched between glass sheets to which ultra-high-precision optics are attached.
Still, the effect is convincing. The image layer is 92% transparent. Zeiss reckons the holographic functionality can turn any glass surface (windows of buildings, transparent screens, side windows of vehicles, etc) into an on-demand communication screen.
The research conducted by Elena Hassinger, an expert in low-temperature physics working at ct.qmat—Complexity and Topology in Quantum Matter (a joint initiative by two universities in Würzburg and Dresden), has always been synonymous with extreme cold.
In 2021, she discovered the unconventional superconductor cerium-rhodium-arsenic CeRh2As2). Superconductors normally have just one phase of resistance-free electron transport, which occurs below a certain critical temperature. However, as reported in the academic journal Science, CeRh2As2 is so far the only quantum material to boast two certain superconducting states.
Lossless current conduction in superconductors has remained a central focus in solid-state physics for decades and has emerged as a significant prospect for the future of power engineering. The discovery of a second superconducting phase in CeRh2As2, which results from an asymmetric crystal structure around the cerium atom (the rest of the crystal structure is completely symmetrical), positions this compound as a prime candidate for use in topological quantum computing.
Sudden jumps in large language models’ apparent intelligence are often a result of the way their performance is tested. Plus, a GPT-powered robot chemist designs reactions and what’s in store for AI in 2024.
NEW ORLEANS—“OK, I want to finish writing this article today. But how should it begin? Hmm, maybe just like that. Wait, does Science use ‘OK’ or ‘Okay’?” Many people say they have an inner monologue running through their heads, narrating their lives. The phenomenon, plus a wealth of research, suggests humans use language not only for communicating, but also for thinking.
Now, it seems artificial intelligence (AI) may benefit from imitating humans’ inner monologue. In a laboratory experiment, tying language to actions improved an AI program’s ability to learn complex tasks, researchers reported here last month at the Neural Information Processing Systems (NeurIPS) conference. The advance might enable AI to learn from, say, YouTube instructional videos.
“I really liked this,” says Anna Borghi, a psychologist at Sapienza University of Rome who studies cognition and language and was not involved in the experiment. “The most interesting aspect is that the presence of language grants flexibility. Even complex actions can be accomplished more easily.”
In my paper, “A Case for Physicalism about the Human Mind,” I didn’t attempt to defend physicalism about human mentality (henceforth, just physicalism) against the many objections that philosophers, and others, have made to it. Instead, I tried to assemble positive evidence that physicalism is true, while insisting that no aspect of human behavior, including human linguistic behavior, makes it necessary to adopt any kind of dualism about human mentality. In their reply to my paper, Professors Taliaferro and Goetz (henceforth, TG) don’t engage in any detail with my positive case for physicalism[1], and they offer no examples of human behavior that can’t be explained unless some kind of dualism is assumed. Their main objection to my paper is, rather, that, because it only takes account of evidence “from the third-person point of view,” it entirely overlooks “the first-person point of view,” which, they hold, shows us that human mentality has certain features incompatible with physicalism. Examples of such features would be that “a choice is an uncaused mental event,” and that “a reason is a purpose that provides an ultimate and irreducible teleological explanation of that choice.” In my reply to TG, I’ll respond to this objection only; I won’t take up every disagreement I have with TG’s reply.
Before I can respond to TG’s main objection, however, I must clarify it. Since “the first-person point of view” is presumably just the point of view provided by introspection, TG’s main objection must be that introspection of one’s mental states somehow shows one that human mentality has certain features incompatible with physicalism. However, it’s important to distinguish between the following two claims:
(TG1) By introspecting one’s own (say) choices, one acquires some reason to think that they are uncaused mental events.
Quantinuum, the world’s largest integrated quantum computing company, and RIKEN, Japan’s largest comprehensive research institution and home to high-performance computing (HPC) center, have announced an agreement…
The device uses a silicone-based muscle replacement to pump blood, and you can see it in action.
NASA’s Parker Solar Probe has already gotten closer to the sun than any other human-made object. Yet, later this year, the star-skimming spacecraft will get even closer — all while traveling faster than its previous top speed.
The solar observatory — which, on Dec. 28, 2023, completed its 18th close flyby of the sun — will once again approach our star on Dec. 24, 2024. During this encounter, it will come within around 3.8 million miles (6.1 million kilometers) of the photosphere, which can be roughly considered the sun’s surface. (The sun is a ball of gas, so it doesn’t really have a surface.) To do so, the spacecraft will brave temperatures of around 2,550 degrees Fahrenheit (1,400 degrees Celsius).
“We are basically almost landing on a star,” Nour Raouafi, an astrophysicist at the Johns Hopkins University Applied Physics Laboratory and project scientist for the Parker Solar Probe mission, told BBC News. “This will be a monumental achievement for all humanity. This is equivalent to the Moon landing of 1969.”
