On August 12th, 1883, a pack of life-extinguishing comets came within a few hundred miles of slamming into the Earth, nearly killing everything on the planet. More »
Salt: sure, you might use it to cure meats for your latest solar-powered circumnavigation. But hold onto your kippers, Magellan, because Singaporean scientists have found that sodium chloride — ordinary table salt! — can also dramatically increase storage capacity. You see, typical hard drives have randomly-arranged magnetic grains, which allow data density of about 0.5 terabit per square inch. But a high-resolution e-beam lithography process, aided by our good friend NaCl, arranges the grains in a tighter, more orderly fashion, upping the density to 3.3 terabits per square inch. Called nanopatterning, this technique enables a 1TB drive to hold 6TB without additional platters; it also works with current manufacturing technology, meaning no expensive upgrades. If that’s got you dreaming of a higher-capacity future, hit the source link for more glorious technical details. We’ll warn you, though: the pictures of luscious, bee-stung lips stop here.
Salt enables six times the storage capacity for snail-unfriendly hard drives originally appeared on Engadget on Mon, 17 Oct 2011 05:22:00 EDT. Please see our terms for use of feeds.
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Think only Boy Scouts can earn badges in bad-ass activities like robotics and video games (whatever happened to wood carving and fire building)? Well you are wrong sir (or ma’am). The Girl Scouts of America are giving their merit badges a 21st century makeover, adding high-tech accomplishments like Computer Expert and Digital Movie Maker, as well as more esoteric points of pride like Locavore. Even old standbys are being reinvented for the modern age like the Fashion, Fitness and Makeup badge, which is now known as the Science of Style and focuses on how things like sunscreen work and making your own perfume. The update sounds like the sort of thing that strong, tech-savvy women like Lady Ada might approve of and we’re all for it, why should the Boy Scouts be the only ones to learn about nuclear fusion? Just make sure our Thin Mints still arrive on time… seriously, we’re starting to go through withdrawal over here!
Girl Scout merit badges get a 21st century facelift, focus on science and technology originally appeared on Engadget on Sat, 15 Oct 2011 07:29:00 EDT. Please see our terms for use of feeds.
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Mankind has been puzzling over the rumbling in our stomachs for so long that even the ancient Greeks came up with a name for it: borborygmi. The word attempts to put the sound of the grumble to mouth. More »
Some graphene, looking thin and strong. Illustration CORE-Materials/Flickr
Graphene, a one-atom-thick sheet of carbon, could end up making a pretty good camera sensor. Researchers at MIT have discovered that graphene can turn light into electricity, but not the way you’d think.
Unlike camera sensors and solar panels which rely on the photovoltaic effect, graphene creates a current because of a temperature difference. When light shines on its surface, it heats the electrons within, but “the lattice of carbon nuclei that forms graphene’s backbone remains cool.” This temperature difference produces the electricity.
Normally, this only occurs with very high energy light sources (lasers!) or very low-temperature materials. Graphene manages it with daylight and at room temperature.
The material surely has many uses (not least as a way to generate solar energy), but it turns out that graphene would make a good camera sensor. It detects infrared light, for example (good for spooky effects), and is also made from cheap, readily available carbon. Research is still young, but perhaps it could lead to a decent camera finally fitting into the supermodel-thin iPod Touch.
Graphene shows unusual thermoelectric response to light [MIT News]
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Samsung’s quest for transparency won’t end with laptops, apparently. Today, the Samsung Advanced Institute of Technology announced that its engineers have successfully created “single crystalline Gallium Nitride on amorphous glass substrates” — an achievement that would allow the manufacturer to produce jumbo-sized LEDs from normal glass, including window panes. Samsung says this scaled-up approach will allow them to lower production costs relative to most LED manufacturers, which rely on sapphire, rather than glass substrates. And, whereas most Gallium Nitride (GaN) LEDs on the market measure just two inches in size, Sammy’s technique could result in displays about 400 times larger. “In ten years, window panes will double as lighting and display screens, giving personality to buildings,” a Samsung spokesperson told the Korea Herald. Unfortunately, however, it will likely be another ten years before the technology is ready to hit the market. Until then, we’ll just have to do our late night window coding the old fashioned way.
[Image courtesy of Columbia Pictures / The New York Times]
Samsung breakthrough could turn your window pane into a big ol’ LED originally appeared on Engadget on Mon, 10 Oct 2011 09:56:00 EDT. Please see our terms for use of feeds.
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Monkey mind-controlled arm: It sounds like the name of an awesomely terrible sci-fi film or a fledgling grindcore group, but it’s a very real phenomenon, and one that could pay significant dividends for paraplegics everywhere. Neurobiology professor Miguel Nicolelis and his team of researchers at Duke University recently devised a method by which monkeys (and, perhaps one day, humans) can control a virtual arm using only their brains. It’s a concept similar to what DARPA has been pursuing with its mind-controlled “Luke” arm, with one important difference: Nicolelis’ system not only allows users to remotely execute motor functions, but provides them with near-instantaneous sensory feedback, as well. Most similar techniques use electrode implants to stimulate brain activity, but this can create confusion when a patient’s brain sends and receives signals to and from a prosthetic arm. Nicolelis circumvented this problem with a new interface that can read and transmit brain signals to an artificial limb, before switching to a receptive mode in just milliseconds.
After designing the technology, Nicolelis and his colleagues tested it on two, electrode-equipped rhesus monkeys. One set of electrodes was placed in the motor cortex of each animal, with the other implanted within their brains’ sensory regions. They then trained the monkeys to look at a three identical objects on a computer screen and to “touch” each object with a virtual arm, controlled by signals sent from the brain electrodes. Only one of the three objects had a so-called “virtual texture,” which, if selected with the on-screen arm, would send a sensory signal back to the monkey’s brain (while triggering a tasty squirt of fruit juice for the lucky contestant). The two rhesus species ended up passing the test with flying colors, resulting in a “proof of principle” that Nicolelis’ system can send tactile signals to the brain in almost real-time. The scientists have already developed a way for monkeys to control the arm wirelessly, and are now embedding their technology within a full-body, mind-controlled exoskeleton for paralyzed patients, as well. Of course, the technology still needs to be tested on actual humans, though Nicolelis seems confident that he and his team have already cleared the most difficult hurdle: “Since we cannot talk to the monkeys, I assume with human patients, it’s going to be much easier.”
Monkeys control virtual arm with their brains, may herald breakthrough for paraplegics originally appeared on Engadget on Thu, 06 Oct 2011 17:44:00 EDT. Please see our terms for use of feeds.
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Stanford researchers figured out that, by dipping electrodes for super capacitors in a solution of carbon nanotubes or a conductive polymer they could increase the charging capacity by up to 45-percent. The team started working with composite electrodes of graphene and manganese oxide, since manganese is cheap and plentiful, but were hamstrung by its low conductivity. The thin coating of more conductive material greatly boosted the capacitance of the electrodes, and thus their ability to hold a charge. Further tests are still required to find the actual energy density of the dipped electrodes, but lead researchers Yi Cui and Zhenan Bao are already working on a way to apply the same technique to batteries.
Dipping capacitors and batteries in nanotubes could improve capacity originally appeared on Engadget on Thu, 06 Oct 2011 02:37:00 EDT. Please see our terms for use of feeds.
If the phrase “I solemnly swear I’m up to no good” means anything to you, you’ll be happy to know that scientists have come one step closer to a Potter-style “invisibility cloak” so you can use your Marauder’s Map to the fullest. With the help of carbon nanotubes, researchers have been able to make objects seem to magically vanish by using the same principle that causes mirages. As anyone who’s been especially parched along Route 66 knows, optical illusions occur when heat changes the air’s temperature and density, something that forces light to “bend,” making us see all sorts of crazy things. Apply the same theory under water using nanotubes — one molecule carbon coils with super high heat conductivity — and scientists can make a sheet of the stuff “disappear.” Remember, it only works underwater, so get your gillyweed ready and check out the video after the break.
Continue reading Invisibility cloak made of carbon nanotubes uses ‘mirage effect’ to disappear
Invisibility cloak made of carbon nanotubes uses ‘mirage effect’ to disappear originally appeared on Engadget on Wed, 05 Oct 2011 00:14:00 EDT. Please see our terms for use of feeds.
Continue reading Compact Stress Meter provides checkups from the comfort of your cubicle (video)
Compact Stress Meter provides checkups from the comfort of your cubicle (video) originally appeared on Engadget on Sat, 01 Oct 2011 05:35:00 EDT. Please see our terms for use of feeds.
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