Have you ever been playing around with molten metal salt, when you accidentally created hollow, soft-shelled particles that could one day increase hard disk storage or power future QLED displays ? Us neither, but that’s exactly what happened to scientists at Rice University when they were researching “tetrapods” to make solar panels more efficient. Through an apparently wacky coincidence, they removed a single ingredient from the tetrapod stew, which left behind tiny droplets of cadmium nitrate. Selenium then melted around those drops, which completely dissolved away, leaving a melted selenium ball with a hole in the middle. It turns out that those selenium “doughnuts” can be packed tightly onto a metal surface without touching, thanks to their soft shells, which could allow more bits to be packed onto a hard drive, or be used in quantum computers and next-gen displays. Since the dots are smaller than a living cell, it took the researchers an entire year to figure out what they’d made and how they did it — luckily they didn’t just bin the whole thing and start over. Filed under: Displays , Storage , Science , Alt Comments Via: Extreme Tech Source: IOP Science
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Researchers stumble onto ‘lava’ generated quantum dots, could power future peripherals
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Mephistophocles writes “Ever since the beginning of Operation Pillar of Defense, hackers have been working overtime to strike a blow against the Israeli government’s computer systems, Finance Minister Yuval Steinitz said Sunday. No fewer than 44 million attacks have been recorded since the operation began five days ago — with nearly all of them failing, thanks to the recent strengthening of computer defense systems in Israel. Speaking at a special press conference at the Government Computing Center in Jerusalem about the cyber war against Israel that has accompanied Hamas’s rocket attacks, Steinitz said that hackers ‘are trying to disable the symbols of Israeli sovereignty, to enter web sites and install anti-Israel content, thus compromising information and data and damaging the government’s ability to serve the public.’ Most of the attacks, he said, were against government sites, like the Prime Minister’s Office site, and security-related sites, such as that of the Home Front Command, the body charged with informing Israelis on how to protect themselves in the event of an attack. Out of those 44 million-plus attacks on government and defense related sites, said Steinitz, only one succeeded – partially. One site, which he did not name, was ‘wobbly for a few minutes,’ but quickly recovered. Even though the government has been successful in warding off hack attacks, Steinitz said that government sites were fully backed up and mirrored, meaning that they could be replaced by a duplicate site instantly if the original site were compromised.” Read more of this story at Slashdot.