North Carolina State University
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Researchers control a game of Tetris using a breathable wearable sleeve
Researchers created an ultrathin, stretchable, breathable electronic material for more comfortable wearables.
Ultrathin membrane makes plane cabins 100x quieter
While air travel is quicker and safer than driving, it's also louder. The continuous low-frequency drone of the engines is why some people invest in noise-canceling headphones. To help reduce that non-stop hum, researchers at North Carolina State University and MIT have developed a thin membrane to be inserted into the lightweight honeycomb structure of planes and helicopters. "At low frequencies – sounds below 500 Hertz – the honeycomb panel with the membrane blocks 100 to 1,000 times more sound energy than the panel without a membrane." said Yun Jing, an assistant professor of mechanical and aerospace engineering at NC State University. The 0.25mm-thick membrane would only add an additional six percent to the overall weight of the honeycomb structure of aircraft. While that doesn't seem like much, every ounce counts to airlines trying to maximize flight costs. It'll be on them to decide whether they'd rather save money on fuel or makes cabins a better place for passengers.
NC State nanoflowers can boost battery and solar cell capacity, make great prom accessories
We see a lot of sleek-looking technology pass through our doors, but it's rare that the inventions could be called beautiful by those who aren't immersed in the gadget world. We'd venture that North Carolina State University might have crossed the divide by creating an energy storage technology that's both practical and genuinely pretty. Its technology vaporizes germanium sulfide and cools it into 20-30 nanometer layers that, as they're combined, turn into nanoflowers: elegant structures that might look like the carnation on a prom dress or tuxedo, but are really energy storage cells with much more capacity than traditional cells occupying the same area. The floral patterns could lead to longer-lived supercapacitors and lithium-ion batteries, and the germanium sulfide is both cheap and clean enough that it could lead to very efficient solar cells that are more environmentally responsible. As always, there's no definite timetable for when (and if) NC State's technology might be commercialized -- so call someone's bluff if they promise you a nanoflower bouquet.
Alt-week 9.8.12: Moon farming, self powered health monitors and bringing a 50,000 year-old girl to life
Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days. Some weeks things get a little science heavy, sometimes it's a little on their weird side, and there's usually a bit of space travel involved, but these week's trend seems to be "mind-blowing." Want to grow carrots on the Moon? We got you covered. How about bringing a 50,000 year-old ancient human back to life? Sure, no biggie. Oh but what about a solar eruption that reaches some half a million miles in height. We've got the video. No, really we have. Mind blown? This is alt-week.
Researchers take full control of cockroach's movement, turn it into a wireless sensor
Built-in power supply? Check. Ability to survive anything? Check. Easy to control? Okay, anyone who's had a cockroach as an uninvited houseguest knows that's not the case. So, rather than re-inventing the biological wheel with a robotic version, North Carolina State university researchers have figured out a way to remotely control a real Madagascar hissing cockroach. They used an off-the-shelf microcontroller to tap in to the roach's antennae and abdomen, then sent commands that fooled the insect into thinking danger was near, or that an object was blocking it. That let the scientists wirelessly prod the insect into action, then guide it precisely along a curved path, as shown in the video below the break. The addition of a sensor could allow the insects to one day perform tasks, liking searching for trapped disaster victims -- something to think about the next time you put a shoe to one.
Researchers propose à la carte internet services, overhaul for web infrastructure
A quintet of researchers funded by the National Science Foundation have envisioned a new internet architecture, one where features could be purchased à la carte. The proposed framework would allow users to fine tune their experience by choosing from a variety of connection services. Let's say, for example, that a customer's connection is fine for browsing the web, but it doesn't pass muster for streaming content -- a service dedicated to video delivery could be added to close the gap. "Ultimately, this should make the internet more flexible and efficient, and will drive innovation among service providers to cater to user needs," report co-author Rudra Dutta told The Abstract. A piecemeal next-gen web is no easy feat, however, as it would require revamping the web's infrastructure with new protocols for choosing particular features, completing payments and monitoring network performance. The group's rough blueprint will be presented at a conference next week, but you can thumb through their short paper at the source.
NC State's new efficient pico projector raises hopes for smartphone cinema
A team at North Carolina State University has developed a new liquid crystal projector that could spell the end of bulky and noisy cinema gear. Conventional tech passes unpolarized light through a filter, but the process is so inefficient that nearly 50 percent of the energy is wasted just keeping things cool. Fortunately, the Wolfpack and ImagineOptix filter claims to be 90 percent efficient -- meaning that future projectors could be far sleeker. It's also a good sign for future smartphone pico projectors, although we're not sure how the owners of our local theater will feel when we start undercutting them with just a phone and a white wall.
NCSU creates stretchable conductors from silver nanowires, lets gadgets go the extra inch
As often as we've seen flexible electronics, there haven't been many examples that could stretch -- a definite problem for wearables as well as any gadget that could afford to take a pull or squeeze. North Carolina State University's Yong Zhu and Feng Xu may have covered this gap through a form of silver nanowire conductor that keeps the energy flowing, even if the wire is stretched as much as 50 percent beyond its original length. By coating the nanowires with a polymer that traps the silver when solid, the researchers create an elastic material that can crumple and let the nanowire take the strain without interruption. Although the stretchy conductor's nature as a research project could put any practical use years into the future, Zhu notes that it can take loads of abuse, making it a perfect fit for rugged mobile devices. It should also allow for robots with a gentler touch and a more natural look... although we'll admit we're skittish about the creepy androids likely to follow.
Scientists tweak wireless power transfer, Tesla nods happily in his grave
Wireless charging may be all the rage these days, but actually beaming electricity -- as sketched above by the man Tesla himself -- still has some snags. North Carolina State U researchers have found a way to possibly vanquish the biggest problem: the difficulty of exactly matching resonant frequencies to amplify current. If external factors like temperature change the tuning of a transmitter even slightly then power drops will occur, but circuitry developed by the NC State scientists would allow receivers to detect these changes and automatically re-tune themselves to match. This could make for more potent car and device charging in the future and, if they stretch the distances a bit, maybe we'll finally get the wire-free utopia Nikola dreamed up 120 years ago.
Android study finds privacy and security risks related to in-app advertising
Android has certainly taken heat for malware-related bits in the past. Now, a recent study by computer scientists at North Carolina State University reveals that over half of the 100,000 apps from the Android Market Google Play include so-called ad libraries, which are essentially handed out by Google or third-party devs to retrieve ads from servers and launch them on your phone. Of these, 297 were classified as "aggressive," as they're allowed to run code from a remote server. Furthermore, Dr. Jiang along with his squad of researchers found that more than 48,000 of the apps put to the test could track location via GPS, while other accessed info could range from call logs, contact numbers, to the apps list on your device. It's unclear if this also applies to Android slates, though this particular study conducted only included handsets.
Neutrinos can transmit messages through walls, mountains, planets
Neutrinos may not travel as fast as we first hoped, but then they have other special abilities to make up for it. Being almost massless, they can penetrate the thickest barriers, which ought to make them ideal message carriers. To illustrate the point, scientists sent the word "Neutrino" on a beam of particles through 240 meters (800 feet) of solid stone and received it loud and clear on the other side. The same approach could potentially be used to send a message right through the center of a planet, making it possible, according to one of the researchers, to "communicate between any two points on Earth without using satellites or cables." The experiment required the latest particle accelerators at Chicago's Fermilab, which flung the neutrinos over a 2.5 mile track before firing them off at an underground receiver, but it proved the principle: Shrink the accelerator down to the size of a smartphone and neutrino messaging could be huge. Or it could die in a format war with quantum teleportation.
Researchers get CPUs and GPUs talking, boost PC performance by 20 percent
How do you fancy a 20 percent boost to your processor's performance? Research from the North Carolina State University claims to offer just that. Despite the emergence of fused architecture SoCs, the CPU and GPU cores typically still work independently. The University hoped that by assigning tasks based on each processor's abilities, performance efficiency would be increased. As the CPU and GPU can fetch data at comparable speeds, the researchers set the GPUs to execute the computational functions, while the CPUs did the prefetching. With that data ready in advance, the graphics processor unit has more resources free, yielding an average performance boost of 21.4 percent though it's unclear what metrics the researchers were using. Incidentally, the research was funded by AMD, so no prizes for guessing which chips we might see using the technique first.
Scientists make magic auto-origami using ink and light (video)
We've seen nano-origami and robo-origami, but nothing quite as rapid and simple as this. Researchers at North Carolina State University have figured out how to neatly fold plastic using infrared light and an inkjet printer. Deep black lines are printed onto the plastic sheets, which then absorb the light and cause the material to fold without anyone having to touch it. The wider the line, the greater the angle of each fold, so it's possible to set, say, a 90-degree bend for a cube or 120 degrees for a pyramid. What's more, by giving the lines different patterns, folds can be made to work in specific directions, potentially producing the most perfect, most hygienic bento box that's ever contained your lunch. Click past the break to watch the folding unfold.
NC State researchers team with IBM to keep cloud-stored data away from prying eyes
The man on your left is Dr. Peng Ning -- a computer science professor at NC State whose team, along with researchers from IBM, has developed an experimental new method for safely securing cloud-stored data. Their approach, known as a "Strongly Isolated Computing Environment" (SICE), would essentially allow engineers to isolate, store and process sensitive information away from a computing system's hypervisors -- programs that allow networked operating systems to operate independently of one another, but are also vulnerable to hackers. With the Trusted Computing Base (TCB) as its software foundation, Ping's technique also allows programmers to devote specific CPU cores to handling sensitive data, thereby freeing up the other cores to execute normal functions. And, because TCB consists of just 300 lines of code, it leaves a smaller "surface" for cybercriminals to attack. When put to the test, the SICE architecture used only three percent of overhead performance for workloads that didn't require direct network access -- an amount that Ping describes as a "fairly modest price to pay for the enhanced security." He acknowledges, however, that he and his team still need to find a way to speed up processes for workloads that do depend on network access, and it remains to be seen whether or not their technique will make it to the mainstream anytime soon. For now, though, you can float past the break for more details in the full PR.
Researchers develop method to measure effects of WiFi attacks
America is built on the principles of life, liberty and WiFi, the latter of which has increasingly become a target for hackers hoping to mess up our chi. To predict what would happen as result of an assault, researchers at North Carolina State University created two models -- one based on a continuous jam of service, and one on an intermittent disruption that would cut off service during specific times. They then measured "order gain," which compares the probability of an attacker having network access to the probability of a legitimate user having access. Basically, the more control a hacker has, the more regular users that will lose service and be shut out -- making it harder to regain control. Researchers hope the new method will help identify the most vulnerable networks, opening the doors to create effective countermeasures to keep our WiFi safe -- something that Starbucks customers will surely be thankful for.
New program makes it easier to turn your computer into a conversational chatterbox
We've already seen how awkward computers can be when they try to speak like humans, but researchers from North Carolina State and Georgia Tech have now developed a program that could make it easier to show them how it's done. Their approach, outlined in a recently published paper, would allow developers to create natural language generation (NLG) systems twice as fast as currently possible. NLG technology is used in a wide array of applications (including video games and customer service centers), but producing these systems has traditionally required developers to enter massive amounts of data, vocabulary and templates -- rules that computers use to develop coherent sentences. Lead author Karthik Narayan and his team, however, have created a program capable of learning how to use these templates on its own, thereby requiring developers to input only basic information about any given topic of conversation. As it learns how to speak, the software can also make automatic suggestions about which information should be added to its database, based on the conversation at hand. Narayan and his colleagues will present their study at this year's Artificial Intelligence and Interactive Digital Entertainment conference in October, but you can dig through it for yourself, at the link below.
NC State University researchers create soft memory machine, just add water
We're not big fans of the word moist, nor the objects it usually describes. But if you call it mushy, slap some storage capabilities into it and develop it in a North Carolina State University lab -- well, then we're all smiles. Which is exactly what researchers at the school have accomplished with their "similar to the human brain" memory device (mmmm... brains). Known as memristors, these biocompatible electronics are ideal for harsh, wet environments that other wussier tech dare not tread. Ripe with the wobbly "properties of Jell-O," the squishy water-based gel houses gallium and iridium alloys that fluctuate between on / off electrically conductive and resistive states -- that's 1 and 0, respectively. Capacity for the gelatinous invention isn't yet optimized for significant real-world use, but you can bet this thing'll be making its way into Krang's exo-suit anyday now. Bill Cosby approved PR after the break.
NC State builds self-healing structural stress sensor, moves on to other alliterative projects
"Sensor, heal thyself," goes an old saying, and North Carolina State University researchers have given it a new spin. Structural stress monitors can break during, say, an earthquake or explosion: just when you most need information about a building's integrity. So the NCSU crew added a reservoir of ultraviolet-curable resin; if their sensor cracks, the resin flows into the gap, where a UV light hardens it. An infrared light, which does the actual monitoring, then has a complete circuit through which to pass, and voila: stress data flows once more, aiding decision-makers. Obviously we never tire of UV-reactive gadgetry, especially for making safer buildings, and we're doubly glad to see self-healing that doesn't involve the phrase "he's just not that into you." To see the self-repair in action, check the picture after the break, and hit the source link for more info.
Shocker! Gamer behavior is actually quite predictable
Isn't it curious how you always crack open a beer before settling in for some GTA? Or how you tend to put an anxious hand over your wallet when logging onto PSN? No soldier, it is not curious. Not at all. But this is: Researchers at North Carolina State University claim they've found a way to predict your in-game behavior with "up to 80 percent accuracy." After analyzing the decision-making of 14,000 World of Warcraft players, they noticed that different players prefer different types of achievements. These preferred achievements clump together into statistically significant groups, known as "cliques", even if they have nothing obvious in common. So a WoW player who likes to improve their unarmed combat skills also, for some psychological reason, tends to want points for world travel. What's more, the researchers believe that clique-spotting can be exploited outside the rather specific world of WoW, in which case their method could prove lucrative to game designers, online retailers and pretty much anyone with an interest in predicting your next move. Want to know more? Then we predict you'll click the PR after the break.
Conductive nanocoating could lead to flexible, wearable devices, Lady Gaga sticks with meat suit
Flexible is the new rigid in the gadget world, from OLED panels and e-paper displays to, of course, the adorable PaperPhone. Now researchers at North Carolina State University are hoping to take flexible to the next level by applying a conductive nanocoating – thousands of times thinner than a human hair – to ordinary textiles. Their technique, called atomic layer deposition, grows an inorganic coating atop cloths like woven cotton. The treated fabric conducts electricity, opening the door to thin, wearable devices with the flexibility of everyday clothing. The technology's still in its nano-infancy, but who knows: maybe a few years from now you'll be sporting a genuinely playable Angry Birds shirt.
