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As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg

It takes a lot of energy for computing systems or data centers to patch up critical errors, but what if we devoted less power to fixing less urgent issues? That's the basic idea behind EnerJ -- a new power-saving system that could cut a chip's energy consumption by 90 percent, simply by prioritizing critical problems over those that are less threatening. Unlike, say, liquid cooling techniques, the University of Washington's framework focuses exclusively on the programming side of the equation and revolves around two interlocking pieces of code: one that handles crucial, precision-based tasks (e.g., password encryption), and another designed to deal with processes that can continue to function, even when facing small errors. The system's software would separate the two codes, meaning that energy from one section of the chip would never be used to fix a major problem that the other should address, while allowing engineers to more efficiently allocate voltage to each regi...

Since the dawn of Kinect hacking, we've seen cameras strung together (or rotated) to create 3D, video game-like environments, while others have tweaked it for headtracking. Others, still, have used it for teleconferencing (albeit, the flat, two-dimensional variety). Now, a team of researchers have gone and thrown it all together to achieve 3D video chats, and if we do say so, the result is greater than a sum of its parts. The group, based out of UNC-Chapel Hill, uses 3D mapping (and at least four Kinects) to render the video, and then employs headtracking on the receiving end so that people tuning in will actually see the live video in 3D, even without wearing 3D glasses. The result: a tableau that follows you as you move your head and spin around restlessly in your desk chair waiting for the meeting to end. That's mighty impressive, but we can't help but wonder: do you really want to see your colleagues in such lifelike detail? Have a gand...

What's better than billions of transistors? Billions of miniature two-nanometer ones, leaving room for billions more. A team of researchers accomplished just that, using the quantum effect to shrink these semiconductors -- and set a new size record in the process -- while also managing to keep them operating at room temperature (note: that photo above is from a different team's study). The team of South Korean, Japanese, and British researchers at Chungbuk National University expect them to "enhance the capabilities of mobile electronic devices" -- a mighty vague claim if ever there was one. Not one for modesty, lead researcher Choi Jung-bum proclaims that it "effectively changes the paradigm of such devices." With no word on mass production, though, we'll just have to wait and see for ourselves how big of an impact these lilliputian circuits will have.  Yonhap News ,  Tech-Freak Stuff

Poor arachnophobes -- it's bad enough that 3D movies can make it look like swarms of eight-legged freaks are pouring out of the screen, now Disney wants you to  feel  the creepy crawlies, too. In a presumed effort to one-up those "4D" chairs used at Shrek's castle down in Orlando, the company has been working on what it calls Tactile Brush -- a chair with an array of 12 vibrating coils that are able to simulate anything from the sensation of speeding around a race track to the delicate drip of rain on your back. Two techniques are used: apparent motion, which triggers two motors in quick succession to create the illusion of something moving over your skin, and phantom sensation, in which two stationary vibrations are felt as a single tingle between the two points. Disney researchers demoed Tactile Brush at the Conference on Human Factors in Computing Systems in Vancouver using a racing game, but hope to bring it to amusement park rides and movie theaters -...

TV viewers are a famously fickle bunch, which tends to drive TV advertisers crazy. The prevalent theory remains that skipping past ads using a pesky DVR is the biggest enemy of marketers, but new research has once again contradicted that received wisdom. The IPG Media Lab in Los Angeles pulled together a representative group of 48 TV and online video viewers and asked them to sit through some programming while equipped with the usual "devices or distractions" that accompany their viewing habits. Central to the study was the measurement of time each person spent facing the screen and how engaged they were with the content. The first thing noted was that 94 percent of TV viewers and 73 percent of online video consumers used some other form of media to augment their visual entertainment. Smartphones were the most common, with 60 percent of test subjects resorting to their handset while gawking at the TV. That's resulted in a mediocre 52 percent attention leve...

Remember that pair of 100 terabit-per-second connections we told you about earlier this moth? Impressive? Sure, but not entirely practical thanks to the massive banks of lasers (370 to be exact) that guzzled several kilowatts of electricity. Researchers at the Karlsruhe Institute of Technology in Germany haven't hit 100Tbps yet, but they were able push 26Tbps using just one, lonely laser. The new single-laser fiber-optic speed record was set using a technique called fast Fourier transform that pulses light at an incredibly high rate with data encoded in 325 distinct colors across the spectrum. A detector at the receiving end is able to distinguish between the various colored data streams, based on tiny differences in arrival time, and recombine them into a high-speed torrent of ones and zeros. The scientists behind the project believe that, eventually, the technology could make its way into commercial use and be integrated into silicon chips. Now, someone needs to hurry up an...

If you ever get tired of poking away at your smartphone's screen like a doorbell, you're not alone. The forward-looking folks over at Microsoft Researchhave been working away at a new touchscreen system designed pick up on more natural, whole-hand movements, effectively allowing users to break free from the finger-based paradigm that governs most tactile devices. Developed in coordination with engineers at Microsoft Surface, the company's Rock and Rails interface can detect three basic hand gestures: a balled fist, which holds items on the screen, an extended hand that can align objects (see the cell marked "d," on the right) and a curved paw, around which users can pivot images (see cell b). This taxonomy opens up new ways for users to crop, re-size or generally play around with their UI elements, though it remains unclear whether the display will trickle down to the consumer level anytime soon. For now, it appears to operate exclusively on the Surface, but more...

A few years ago, engineers at Cornell were rejoicing when their Ranger robot set an unofficial world record by walking for 5.6 miles without stopping. Since then, the 22-pound bot has only built up its endurance, to the point where it can now chug along for a full 40.5 miles without a single battery recharge, or an ounce of human assistance. The Ranger pulled off the feat last week, when it completed nearly 308 laps around the university's Barton Hall running track, over the course of more than 30 hours. Engineers say that their bot's stamina has a lot to do with its energy efficiency. The Ranger runs on about 16 watts and uses them more sparingly than most of its mechanized brethren. It also saves juice by swinging its legs more liberally than most bipedal walkers, essentially allowing its limbs to fall freely before re-stabilizing itself. The robot's next challenge, apparently, will be to incorporate automatic steering into its gait, since walking in circles can ...

Think your body's a temple? Turns out it's actually just the antenna the temple's staff uses to watch football when they're done praying. A group of engineers from Microsoft Research showcased a technology at Vancouver's Conference on Human Factors in Computing that offers gesture-based control on a scale that could make the company's Kinect controller downright laughable. The team demonstrated how it could harness the human body's reception of electromagnetic noise to create gesture-based computer interaction that does away with the need for a camera -- though a receiver  is worn on the body (the neck, in this case). The system uses the unique signals given off in different parts of the home to help measure the interaction, effectively turning one's walls into giant control pads, which can regulate things like lighting and the thermostat. Hopefully games, too, because we can't wait to play Pac-Man  with our bedrooms. The Register Microsoft

You don't get to be Microsoft's Principal Researcher without a strong sense of technology and design history, and Bill Buxton certainly has plenty of evidence to show he's well qualified in that respect. That swath of devices pictured above is just a sample of the impressive gadget collection Buxton has amassed over the past 35 years, which he is now exhibiting in public for the first time at a conference in Vancouver, British Columbia this week. Not able to check it out in person? Then you can thankfully settle for the next best thing, as Microsoft Research has also put the entire collection online, complete with Buxton's own notes for each of the items (which range from Etch-a-Sketches to watches to a range of different input devices). Hit up the source link below to start browsing. Buxton Collection

We love our smartphones (in part) because they're flexible, in the sense that they are mighty multitasking machines. Researchers from Queen's University in Ontario Canada, however, want flexible phones in a literal sense -- less five-tool player, and more master contortionist. Using a ductile e-inkdisplay and elastic electronic underpinnings, they created a device called the PaperPhone that literally bends to its user's will. Curling the corners of the device isn't just for show, either, as folding the phone is how users navigate menus and make calls. We aren't completely sold on the idea of a bend-based UI, but we're definitely digging the lithe and lightweight phone form factor. Video of the new flexi-phone is after the break. Update : A second video showing the same 3.7-inch display in a wearable computer project dubbed, "snaplet," has been added after the break. Human Media Lab Queen's University Ontario

Back in 2009, we told you about a University of Wisconsin-Madison scientist using GPS to tagasthmatics in an effort to better understand what was triggering their attacks. Two years later, David Van Sickle and his current company, Asthmapolis, are about ready to turn his research into a commercial product dubbed the Spiroscout. The USB-powered inhaler uses GPS as well as WiFI to track patients' inhaler use, which Van Sickle says will yield a fuller, more accurate body of data than the self-recorded logs patients are often asked to keep. The benefit is two-fold, Van Sickle says: physicians can use this data to adjust their patients' medication, if necessary, while epidemiologists might have more insight into population-level trends. As  PhysOrg  notes, this isn't the first inhaler of its kind (incidentally, that would be Asthmapolis' first-gen product, the SiliconSky GPS), but it may be the most practical one to date in that it doesn't come with a bulky box atta...

Well, this might be a good reason for The Powers That Be to know your exact whereabouts. According to a team of MIT researchers, speeding up data rates on mobile devices could be as easy as tapping the various motion sensors found in run-of-the-mill smartphones. The scientists believe our wireless infrastructure is at the root of bottlenecks, with a handful of weak transmitters clumsily "handing off" data to one another as you move out of range. The solution: use GPS radios, accelerometers, and even gyroscopes to infer where you're headed, and then choose an access point near where you're likely to end up. The difference, they report, is dramatic: a 50 percent boost in throughput, along with improved success in choosing the best bit rate. To boot, if a base station is armed with location-based info, it can better predict when the devices connected to it are on the verge of losing contact. That's all good news, but sadly we doubt any amount of promising science is...

As trippy as mind-control still seems to us, we've already seen it implemented in everything from wheelchairs to pricey gaming (and car driving!) headsets. But the problem is that they measure brain activity outside the skull -- you know, the thing we've evolved to shield the murky goings-on in our minds from prying EEG sensors. Now, though, a team of Washington University researchers appears to have happened upon a more effective -- albeit, invasive -- approach. The researchers got some brave specimens to move a mouse cursor by implanting plastic pads containing electrodes underneath their skulls, with the sensors sitting on the surface of the brain . That, they say, gives them access to more telling, high-frequency waves that say a lot more about cognitive intentions. In the end, the subjects moved the cursors by thinking one of these sounds: "ee," "ah," "oo," and "eh." Brain-computer interfaces ain't new, of course, b...