Energy-recycling foot makes it easier for amputees to walk

What’s better than an artificial nose? Why, an artificial foot, of course! University of Michigan researchers have developed a new prosthetic foot that could one day make it much easier for amputees to walk. Put simply, this new prototype drastically cuts the energy spent per step, as it harnesses the energy exerted when taking a step and enhances the power of ankle push-off. The device is able to capture dissipated energy, and an inbuilt microcontroller tells the foot to return the energy to the system at precisely the right time. Tests have shown that those using this here foot spent just 14 percent more energy to walk than one would spend when walking naturally, which is a rather significant decrease from the 23 percent uptick experienced with conventional prostheses. If you’re still baffled, there’s a pretty wicked video demonstration waiting for you after the break.

Continue reading Energy-recycling foot makes it easier for amputees to walk

Energy-recycling foot makes it easier for amputees to walk originally appeared on Engadget on Mon, 22 Feb 2010 09:21:00 EST. Please see our terms for use of feeds.

Permalink   |  sourceUniversity of Michigan  | Email this | Comments

Artificial nose becomes coffee analyzer, sniffs out KIRF Starbucks venues

Artificial schnozzes have been sniffing foreign objects for years now, but rarely are they engineered to sniff out specific things. A team of researchers from the University of Illinois in Urbana-Champaign have done just that, though, with a new snout that acts as a coffee analyzer. Reportedly, the device can “distinguish between ten well-known commercial brands of coffee and can also make a distinction between coffee beans that have been roasted at different temperatures or lengths of time.” The significance here is that this distinction is incredibly difficult to make, and it could one day help coffee growers determine whether batches are as good as prior batches on the cheap. More importantly, however, it could help the modern java hunter determine whether or not they’re walking in a corporate Starbucks or one of those “branded” kiosks with two-fifths the menu. Brilliant, right?

Artificial nose becomes coffee analyzer, sniffs out KIRF Starbucks venues originally appeared on Engadget on Sun, 21 Feb 2010 23:34:00 EST. Please see our terms for use of feeds.

Permalink   |  sourcePhysorg, ScienceNOW  | Email this | Comments

OU professor submerses laptop in liquid nitrogen, smashes it to prove a point (video)

Hey, students — pay attention. Not to us, mind you, but to the syllabus provided by your professor. Kieran Mullen, a physics professor at the University of Oklahoma, has a fairly strict rule about gadgets in class: there won’t be any, ever, under any circumstances. Balk all you want (understandable given his own clipped-on cellie), but if you sign up for this guy’s class, you’ll be flipping your phone to “off” and leaving your laptop in the dormitory. And if you try to blaze your own path and slip that netbook into the back row, you might leave bitterly disappointed. As you’ll see clearly in the video past the break, Mr. Mullen sought to make a visual point that laptops weren’t allowed in class (he calls them “a distraction”), and while it seems that the whole stunt was premeditated, most students acknowledged that his point was driven home. In short, he took a defunct machine, submerged it in liquid nitrogen, and proceeded to make the following statement:

“This is just liquid nitrogen, so it alone won’t hurt the computer. But this will.”

Find out exactly what “this” was by hitting that ‘Read More’ button there on the lower left.

[Thanks, studentatOU]

Continue reading OU professor submerses laptop in liquid nitrogen, smashes it to prove a point (video)

OU professor submerses laptop in liquid nitrogen, smashes it to prove a point (video) originally appeared on Engadget on Sun, 21 Feb 2010 14:54:00 EST. Please see our terms for use of feeds.

Permalink   |  sourceThe Oklahoma Daily  | Email this | Comments

UMich gurus greatly reduce gadget energy consumption (at the expense of awesomeness)

Mama always told us that there’d be trade-offs in life, but we aren’t so sure we’re kosher with this one. As the story goes, a team of Wolverines from the University of Michigan figured out a solution to an age-old problem: effectively lowering power consumption by a significant amount in electronic devices. Anyone with a smartphone yearns for better battery life, and while Stevie J may argue that no one reads for ten hours straight, we’d still rather have the option than not. The development revolves around “near-threshold computing” (NTC), which allows electronic wares to operate at lower voltages than normal, in turn lowering energy consumption. Researchers estimate that power energy requirements could be lowered by “10 to 100 times or more,” but unfortunately, that low-voltage operation would lead to “performance loss, performance variation, and memory and logic failures.” We appreciate the hard work, folks, but could you hit us back when the side effects are somewhat less daunting?

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UMich gurus greatly reduce gadget energy consumption (at the expense of awesomeness) originally appeared on Engadget on Sat, 20 Feb 2010 10:33:00 EST. Please see our terms for use of feeds.

Permalink   |  sourcePhysorg  | Email this | Comments

Yale students build spokeless bicycle in one semester, now looking for jobs

Here’s something that’ll make you think twice before your next bike purchase — the geniuses (genii?) at Yale University have built a pretty rad spokeless bicycle, which was somehow inspired by the lack of “pictures of a real spokeless bicycle online.” Sure, strictly speaking it’s just a half-done product due to time (one semester) and budget restraints, but that rear wheel — driven by the pedals on its geared inner rim — alone should be enough to make you gasp. Practical hipsters might even be able to fit an electric motor or some sort of container inside the wheel, although we’re pretty content with the futuristic hollowness. Either way, the Yale grad who posted these photos is now available for hire, so pay him well and you can have it your way.

Yale students build spokeless bicycle in one semester, now looking for jobs originally appeared on Engadget on Wed, 17 Feb 2010 22:16:00 EST. Please see our terms for use of feeds.

Permalink Switched  |  sourceReddit  | Email this | Comments

Cal researchers create ‘energy-scavenging nanofibers,’ look to energize your next A&F sweater

We’ve seen the magic of piezoelectrics before, but if a team of Cal Bears can really deliver, their spin on things will actually make a difference in the retail realm. Engineers at the University of California, Berkeley have concocted so-called “energy-scavenging nanofibers,” which could one day be “woven into clothing and textiles” in order to convert into electricity the energy created through mechanical stress, stretches and twists. If everything works out, these movement-lovin’ clothes could theoretically power your phone and / or PMP as you walk, and for those concerned with cost, we’re told that the organic polyvinylidene fluoride materials use to make the nanofibers are easy and cheap to manufacture. Too bad there’s no direct confirmation that PVDFs are machine washable, but hey, that’s why you’ve got the local dry cleaners on speed dial.

Cal researchers create ‘energy-scavenging nanofibers,’ look to energize your next A&F sweater originally appeared on Engadget on Tue, 16 Feb 2010 08:39:00 EST. Please see our terms for use of feeds.

Permalink Hot Hardware  |  sourceUC Berkeley  | Email this | Comments

Germanium lasers offer ray of hope for optical computing

Bandwidth scarcity, is there any more pressing global issue that we’re faced with today? We think not. Given the exponential growth in both computing power and software’s exploitation and expectation of greater resources, it’s no surprise that at some point we’ll have to look beyond simple electrical currents as the transporters of our data. One bold step taken in that direction has been the demonstration of an operational germanium-on-silicon laser by researchers at MIT. By tweaking the electron count in germanium atoms with the help of some added phosphorous, they’ve been able to coax them into a photon-emitting state of being — something nobody thought possible with indirect bandgap semiconductors. Perhaps the best part of this is that germanium can be integrated relatively easily into current manufacturing processes, meaning that light-based internal communication within our computers is now at least a tiny bit closer to becoming a reality.

Germanium lasers offer ray of hope for optical computing originally appeared on Engadget on Fri, 05 Feb 2010 07:03:00 EST. Please see our terms for use of feeds.

Permalink PhysOrg  |  sourceOptics Info Base  | Email this | Comments

Photovoltaic circuit makes solar-powered touchscreens possible, not yet plausible

What’s cooler than the latest in technology? How about the latest in self-powering technology? University of Pennsylvania researchers have put together what seems like the world’s first photovoltaic circuit, which is to say that the electronic parts of your devices will no longer have to just consume energy, they’ll be able to harvest it directly from the sun. The most obvious application for this would be in smartphone touchscreens, which could recharge themselves while you sip your latte at the local sun-drenched coffee shop. Of course, such practical uses are still a fair distance away, as the team can generate only minuscule amounts of power at present, but the theory is in place and so is our attention. Don’t let us down, Penn!

Photovoltaic circuit makes solar-powered touchscreens possible, not yet plausible originally appeared on Engadget on Fri, 05 Feb 2010 03:07:00 EST. Please see our terms for use of feeds.

Permalink Inhabitat, Discovery  |  sourceDawn A. Bonnell Research Group  | Email this | Comments

Penn State busts out 100mm graphene wafers, halcyonic dream inches closer to reality

Yes, we’ve been marching on this road to graphene-based superconductive electronics for a long, long time. But in the space of one week, we’ve now seen two significant advancements pop up that rekindle our hope for an ultrafast tomorrow. Hot on the heels of IBM’s recent bandgap achievement comes Penn State University with a 100mm wafer of pure graphene gorgeousness. Built using silicon sublimation — a process of essentially evaporating the silicon away from the carbon layer — these are the biggest graphene wafers yet, and field effect transistors are being built atop them now to start performance testing early this year. Naturally, nobody’s sitting on this laurel just yet, with further plans afoot to expand beyond 200mm wafers in order to integrate fully into the semiconductor industry, whose current standard wafer size is around 300mm in diameter. On we go then.

Penn State busts out 100mm graphene wafers, halcyonic dream inches closer to reality originally appeared on Engadget on Wed, 03 Feb 2010 10:17:00 EST. Please see our terms for use of feeds.

Permalink Graphene-Info  |  sourcePenn State  | Email this | Comments

Evolving robots navigate a maze, help each other, plot descruction of mankind

You’ll say the whole Robot Apocalypse meme is played out. We say it’s your lack of focus that’ll eventually be the downfall of society. Gurus at the Laboratory of Intelligent Systems in the Ecole Polytechnique Fédérale of Lausanne have been working on “evolving robots” for quite some time, but the latest breakthrough is easily the most astounding (and in turn, terrifying) of all. According to new research that was just made public, a gaggle of robots programmed to use Darwinian selection in order to learn, evolve and mutate have now successfully moved sans collisions through a maze and helped each other push tokens around in order to achieve a common goal. Moreover, some of the creatures even displayed early signs of a predatory-prey relationship, which effectively assures mankind that these cute little learners will one day assimilate to rule the world however they please. Keep laughing if you must — it’ll probably make the painful sting of reality a bit easier to take when Doomsday rolls around.

Continue reading Evolving robots navigate a maze, help each other, plot descruction of mankind

Evolving robots navigate a maze, help each other, plot descruction of mankind originally appeared on Engadget on Mon, 01 Feb 2010 07:49:00 EST. Please see our terms for use of feeds.

Permalink Slashdot  |  sourcePLoS Biology  | Email this | Comments