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Invisibility cloak modified to make you see things that aren't there
The ever-evolving tale of the invisibility cloak makes us want to hang our heads in our hands sometimes, so fraught with frustrations does it seem. Well, another chapter's been added to the tome: researchers at the Hong Kong University of Science and Technology have devised a way to extend the invisibility principle, allowing an illusion to sit in place of the invisible object. So, say you wanted to use an invisibility cloak to mask the presence of your bottle of beer on the table, the new concept -- or 'shroud of lies' as we call it -- would enable you to make it appear that there was a glass of water sitting there, in place of the beer. So how does that work, exactly? Normal, every day invisibility cloaks bend light around a central cavity, whereas the team has now worked out mathematical rules for bending light in other ways, allowing a material to be designed to bend light in the exact way a spoon would, so that the light hitting the material would distort, making it look like a spoon was there. Theoretically, all of this is rather simple and quite sound, though it turns out that there are numberless mechanical obstacles standing in the way of producing such devices. The new illusion-producing device would have to be capable of working without interfering with the invisibility cloak itself (which, if you recall, also can't properly be said to exist). There's no word on when any of this will ever come to fruition of course, but we remain always hopeful.
Acoustic superlens could mask ships from sonar... in theory, anyway
Man, the mad scientists are really on a roll of late. First we hear that Li-ion cells are set to magically double in capacity, and now we're learning that a new form of invisibility cloak is totally gearing up for its Target debut. As the seemingly endless quest to bend light in such a way as to create a sheath of invisibility continues, the University of Illinois at Urbana-Champaign's Nicholas Fang has reportedly developed a metamaterial that acts as a type of acoustic superlens. In theory, at least, this approach would rely on phreaking with sound rather than light in order to intensely focus ultrasound waves; by doing so, one could hypothetically "hide ships from sonar." To be fair, this all sounds entirely more believable than hiding massive vessels from human sight, but we're still not taking our skeptic hat off until we see (er, don't see?) a little proof.[Via Slashdot]
Purdue researchers concoct new invisibility cloak, plan Walmart debut
Hate to say it, but we're beyond the point of hope here. We just won't ever, ever see a real-deal invisibility cloak during our relatively brief stint on Earth. That said, researchers at Purdue University are doing their best to prove us wrong, recently developing a new approach to cloaking that is supposedly "simple to manufacture." Unlike traditional invisibility cloaks, which rely on exotic metamaterials that demand complex nanofabrication, this version utilizes a far simpler design based on a tapered optical waveguide. A report from the institution asserts that the team was able to "cloak an area 100 times larger than the wavelengths of light shined by a laser into the device," but for obvious reasons, it's impossible to actually show us it happened. Regardless, for the sake of the kiddos above, we're hoping this stuff gets commercialized, and soon.[Via Digg, Image courtesy of Thomas Ricker (yes, that Thomas Ricker)]
Quest for invisibility cloaks revisited by two research groups
After a brief period of no news, it's time to revisit the world of invisible cloaks. Inspired by the ideas of theoretical physicist John Pendry at Imperial College, London, two separate groups of researchers from Cornell University and UC Berkeley claim to have prototyped their own cloaking devices. Both work essentially the same way: the object is hidden by mirrors that look entirely flat thanks to tiny silicon nanopillars that steer reflected light in such a way to create the illusion. It gets a bit technical, sure, but hopefully from at least one of these projects we'll get a video presentation that's sure to make us downright giddy.
Emo Labs concocts its own invisible speaker technology
Emo Labs didn't stir up too much commotion while CES was going on, but apparently it did have a tiny presence in Vegas. The crew at Technologizer was able to listen to a sneak preview of the startup's Edge Motion technology, and if the demo is indicative of the end result, we could be onto something special. Much like NXT's SoundVu tech that seemed to fizzle out about as quickly as it hit the scene in 2005, this system creates a so-called invisible speaker by "using arrays of motors to wiggle the edges of a clear membrane." Gurus at the company are hoping to have it integrated into panels of TVs by the end of this year, though it'll be a bit longer before the same can happen on space-constrained laptops.
Cloaking device puts the kibosh on cellphone interference
There has been plenty of research into cloaking devices, but while scientists are still working their way towards the visible light spectrum they seem to be having the best luck with microwaves. Most recently, a new metamaterial made from over 10,000 individual pieces of fiberglass has been used to cloak a bump on a flat mirrored surface -- the material prevents microwaves from being scattered, giving the RADAR (we're guessing it's a RADAR) the impression that the surface is flat. This has many possible applications, such as cloaking sources of interference to cellular communications. Unfortunately, the implication we most desire -- rendering us invisible during high society jewel heists -- has yet to become reality.
USC develops flexible, transparent TFT prototype for high-tech temporary tattoos
USC researchers have demonstrated a low-temperature (and therefore relatively inexpensive, apparently) process for printing transparent TFTs on flexible material able to bend up to 120 degrees which allows for embedding LED to build see-through displays. The prototype disc shown above is 5 inches in diameter and contains around 20,000 nanotube transistors. The researchers suggest the technology could be used for e-paper, smart tags, and artificial skin, as well as an affordable heads-up display that could be put into car windshields. Our suggestion? Couple it with transparent playing cards for the ultimate poker-cheating experience.[Via OLED-Display]
Korean scientists create transparent memory chip... or so they tell us
Researchers at the Korea Advanced Institute of Science and Technology claim to have created a see-through non-volatile memory chip based on resistive random-access memory (RRAM) technology. Made with transparent oxide film and electrodes on clear glass or plastic circuit boards, the group believes commercial production could begin in 3 to 4 years and could be cheaply manufactured (current backers of RRAM include Fujitsu, Sharp, Samsung and others). They're hopeful the new technology will pave the way for transparent devices such as monitors and televisions. No images of the transparent chip have been published -- but they're not much to look at, anyway.[Via cellular-news]
The Queue: They're watching you
Welcome back to The Queue, WoW Insider's daily Q&A column where the WoW Insider team answers your questions about the World of Warcraft.The weekend was nice and slow as usual, so our Monday Q&A will be brief. I fully expect a busy morning tomorrow, so get your questions in now! Let's get started, shall we? whack asked... Why are there shades all over major and minor cities in Azeroth, Outland, and Northrend? Has there been an explanation? I originally thought they would only be there for the WotLK launch event but they haven't gone away.
Researchers create light bending material for invisibility cloak
We're only at the nano scale folks so you'll have to keep those high school fantasies of an invisibility-cloaked romp through the girls' locker room tucked away for now. Still, two teams of US government funded researchers under the direction of Xian Zhanga at UC Berkeley say that they've developed a material which can bend visible light around 3D objects, effectively making them disappear. While similar to the negative refractive properties of materials developed back in 2006, UCB's so-called meta-material is easier to work with and absorbs far less light than those earlier products. As such, the material could scale to the size of invisibility cloaks to hide objects such as tanks or mischievous boy-wizards. However, that day is a long ways off. In the short term, the meta-material will most likely find use in the far less interesting (to consumers, anyway) application of building better microscopes. Hey, Xian, picture of your invisible material or it didn't happen... oh, wait.[Via BBC News]
Not-in-the-notes for AoC's 17th July patch: invisible hotfix edition
Yesterday's Age of Conan patch was one of the better ones we've seen in recent times, but it did bring back an old tradition: a longish list of changes that were not mentioned in the official patch notes. However, rather than this list being full of stealth nerfs, it just looks like a lot of things broke in the latest update. Some of the bigger concerns have been: the abusing of combos now that you can cancel them out and still do damage (leading to no cooldowns on stuns, knockbacks, etc.); and players sometimes becoming invisible to others. Thankfully, Funcom has been on the ball with these two larger issues and have issued a hotfix to the live servers. This is all that the hotfix purports to do though, so read through the undocumented patch changes list on the forums to see what else was introduced. There's at least one good thing on the list, too -- specific crafting merchants can now be found in guild cities.
Loot Reaver gets his revenge
Void Reaver, after 2.4, is apparently, "wrecking fools," according to Korin on the Silver Hand. We all called him Loot Reaver before 2.4 -- if your guild could finish off Karazhan, and survive VR's trash, he was basically a pushover. But a whole combination of factors, including addon problems (with DeadlyBossMods and VoidReaverAlarm) that killed the addons that made it cake, as well as a few bugs and other problems with the fight after the patch, means Loot Reaver is getting his revenge. He's back to being a real challenge in Tempest Keep.The hardest part of the encounter is avoiding these orbs he shoots out at random spots where a guild member is standing. When he shoots one out, everyone in the guild has to move away from that spot and each other, since getting hit with one is instant death. Those addons were meant to tell you when an orb had been fired, as well as let you keep an eye on the proximity of where it was hitting (so you could easily dodge it). But without the addons, people are back to judging where the orbs might land, and guilds that haven't practiced the fight much aren't that great at judging. Not to mention that there are some bugs, apparently -- some of the orbs are invisible, and others may even be moving through walls and underground.The fight is still doable, but apparently Blizzard wasn't happy with how easy it was to waltz in there with some addons and collect your loot. Whether it's bugs or addon changes, Void Reaver is currently back to "wrecking fools."
Brickhouse Security's two-way micro headset may never leave your ear canal
Unlike Brickhouse Security, we won't go so far as to call this thing "invisible," but when placed in the ear, all but the most eagle-eyed among us are likely to overlook it. The elaborately named Secret Service Invisible 2-Way Micro Headset comes with an easily hidden wireless transmitter that plugs into any mobile with a 2.5-millimeter audio output. Once rigged up, the wearer can have someone listen in on conversation in a room while also receiving input from said listener. Unfortunately, this likely Jack Bauer-approved gizmo demands a practically ludicrous $649.95, so it looks like we'll be sticking to brute force and walkie talkies here. Check out a demo video after the jump -- but be sure and kill the speakers first, alright?[Thanks, Tony M.]
British Army looks to make tanks, troops invisible
While not the first bunch to try and mesh invisibility with military equipment, the British Army is reportedly staying busy by "testing technology it claims makes tanks and troops invisible." Apparently, the (previously) uber-secret trials were conducted by the Royal Engineers and scientists from QinetiQ, and if eyewitness reports are to be believed, they were able to "make a vehicle seem to completely disappear." The illusion (read: we're no closer to actual invisibility cloaks) was reportedly created by utilizing "cameras and projectors to beam images captured from the surrounding landscape onto a specially-adapted tank coated with silicon to maximize their reflective qualities," and if things go as planned, these elusive machines could make their way onto the battlefield "within five years." 'Course, it's not like anyone will have visual proof of that, but we suppose that's just the nature of the beast.[Via DailyMail]
Scottish researchers reveal cameraphone-enabled 'invisible art'
Granted, we've already seen what wild colors can hide behind a shutter, but now a team of Scottish researchers are hoping to "bridge the virtual and real worlds" by applying invisible artwork to buildings around Edinburgh. Put simply, users who snap pictures of landmarks and MMS them back to the database can receive "an image with extras added to it." Dubbed Spellbinder, the invisible graffiti project uses image-matching algorithms to analyze the image and send back tagged snapshots of the location a user just photographed. Additionally, location projects and "virtual games" are also being looked into, which should thoroughly please both the social networking fanboys and hide-and-seek lovers alike.[Via mocoNews]
Transparent transistors to power next generation of displays
We've been following this trend of making stuff invisible for some time now, and the short of it is that invisibility doesn't really quite work as much as we'd like it to for now. But a new result from Northwestern University may be the closest to true "invisible" electronics that we've seen thus far -- honestly, they're really just transparent. A group of scientists, led by Tobin J. Marks, a professor of chemistry, materials science and engineering at Northwestern, have just published a paper in Nature Materials that says that it's possible to produce "transparent, high-performance transistors" on glass and plastics. Dr. Marks said that it was conceivable to be able to construct "displays of text or images that would seem to be floating in space," -- such as a heads-up display of a map built into your windshield, or a visual aid built into a set of goggles for soldiers -- and that new displays based on this technology could be commercially available via his new startup Polyera within 18 months. Heck, if we could use an upgraded version of our bedroom window as a ginormous display to watch TV or movies on, we'd toss our 30-inch LCDs and/or plasma screens in a second.
Researchers develop metamaterial with negative refractive index
We've got next-to-invisible objects and cameras with ridiculously large sensors, and thanks to a team of brilliant researchers over in Germany, now we've got "an exotic material with a negative refractive index for visible light." Gunnar Dolling and his colleagues at the University of Karlsruhe in Germany have created a metamaterial with layers of silver sandwiching a thin sliver of nonconducting magnesium fluoride on a glass sheet, and once an array of square holes were etched in, his tests showed that the "structure had a negative refractive index of -0.6 for light with a wavelength of 780-nanometers," besting the previous record of 1,400-nanometers. While the scientific babble may not mean much to you, the long and short of it is that this discovery could "lead to further breakthroughs in invisibility cloaks, which could hide objects from the human eye" and make escaping your troubles quite a bit easier. Moreover, the technology could be used in "superlenses" to see details "finer than the wavelength of visible light," but Dolling is reportedly more interested in studying the effects of his discovery than attempting to build any mystical devices, which is probably for the good of mankind, anyway.[Via Slashdot]
Duke scientists build theorized invisibility cloak. Sort of.
Yes, everyone wants an invisibility cloak. Yes, it's been theorized and in development before. But now, what our friends across the pond have only imagined, scientists at an American university have actually built. A group of brainiacs at Duke University have built a device (based on the Imperial College London theory) that can deflect microwave beams so the beams flow around an object almost as if nothing was there, with not too much distortion (but only in two dimensions). In order to do this, the group built a series of concentric circles made up of "metamaterials," or "artificial composites that can be made to interact with electromagnetic waves in ways that natural materials cannot reproduce." Don't get too excited yet, as scientists warn that this is merely a "baby step." The next step is to make the cloak work in three dimensions, and make improve the cloak's effectiveness. And even still, we're a long way off from making something completely disappear from visibility, which "would have to simultaneously interact with all of the wavelengths, or colors, that make up light." said David R. Smith, a member of the research squad. Hey Duke team, if you ever need human test subjects, we'd definitely be willing to volunteer.[Via The Associated Press]
