CubeSail parachute to drag old satellites from orbit, keep atmospheric roads clear

It’s not something laypeople think about very often (space debris, for those wondering), but it’s clearly on the minds of boffins at the University of Surrey. Over the years, the amount of defunct equipment hovering around beyond our view has increased significantly, with some reports suggesting that over 5,500 tonnes of exhausted kit is currently hanging around somewhere up there as a result of “abandoning spacecraft.” In order to prevent the problem from growing (and to possibly reverse some of the damage), the CubeSail has been created. Put simply (or as simply as possible), this here parachute could be remotely deployed once a satellite had accomplished what it set out to do, essentially dragging it back through a fiery re-entry that it would never survive and clearing out the orbital pathway that it was using. We’re told that it’ll be ready for deployment in late 2011, but for now you can check out an all-too-brief demonstration vid just beyond the break.

Continue reading CubeSail parachute to drag old satellites from orbit, keep atmospheric roads clear

CubeSail parachute to drag old satellites from orbit, keep atmospheric roads clear originally appeared on Engadget on Mon, 29 Mar 2010 09:49:00 EST. Please see our terms for use of feeds.

Permalink   |  sourceScience Daily, University of Surrey  | Email this | Comments

InVisage envisions a world where cell phone cameras don’t suck, embraces quantum dots

The invention of nanocrystal semiconductors — more commonly called quantum dots — has spurred scientists to create everything from precisely-colored LED lamps to higher-density flash memory. There’s also been some talk of applying a solution of the tiny crystals to create higher sensitivity cameras, and according to a company named InVisage, that latter utility is almost ready for commercial production. By smearing light-amplifying quantum dots onto the existing CMOS sensors used in cell phone cameras like so much strawberry jam, InVisage claims it will offer smartphone sensors that have four times the performance and twice the dynamic range of existing chips by the end of the year, and roll out the conveyor belts in late 2011, just in time for the contract to end on your terrible new cameraphone.

[Thanks, Matt]

InVisage envisions a world where cell phone cameras don’t suck, embraces quantum dots originally appeared on Engadget on Tue, 23 Mar 2010 02:42:00 EST. Please see our terms for use of feeds.

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EcoloCap claims nanotube-infused Lithium-X battery has 99 percent efficiency, fuels our long-range EV dreams

The more we hear about the next generation of rechargeable batteries, the more nanotechnology seems integral to the case, as scientists work to improve the capacity of electrodes in the popular Lithium-ion chemical battery structure. Silicon nanowires are an exciting future possibility, and one current solution uses nano-structures made of iron phosphate. But the firm we’re highlighting today, EcoloCap, has decided to revisit our versatile friend: the carbon nanotube. The company has just spread the word that its Nano Lithium X battery can generate a minimum of 200 amp-hours with a single cell (a Tesla requires 6,831 cells) at half the cost of a traditional Li-ion and with greater than 99 percent efficiency. Truth be told, we don’t know if the tech actually exists, and we’d never even heard of the company before today — but if this solution does materialize with the voltage to match its longevity, it’ll bring a badly needed eco-boost of competition to a market with far too few players.

EcoloCap claims nanotube-infused Lithium-X battery has 99 percent efficiency, fuels our long-range EV dreams originally appeared on Engadget on Mon, 22 Mar 2010 10:26:00 EST. Please see our terms for use of feeds.

Permalink Marketwire  |  sourceEcoloCap  | Email this | Comments

3D invisibility cloak fashioned out of metamaterials

Those HDTV manufacturers did tell us that 3D was going to be everywhere this year, didn’t they? Keeping up with the times, scientists investigating potential methods for rendering physical objects invisible to the human eye have now moved to the full three-dimensional realm. The Karlsruhe Institute of Technology has developed a photonic metamaterial that can make things disappear when viewed from all angles, advancing from previous light refraction methods that only worked in 2D. It sounds similar to what Berkeley researchers developed not too long ago, and just like Berkeley’s findings, this is a method that’s still at a very early stage of development and can only cover one micrometer-tall bumps. Theoretically unlimited, the so-called carpet cloak could eventually be expanded to “hide a house,” but then who’s to say we’ll even be living in houses by that time?

3D invisibility cloak fashioned out of metamaterials originally appeared on Engadget on Fri, 19 Mar 2010 08:51:00 EST. Please see our terms for use of feeds.

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Microprocessor mega-shocker: self-assembling silicon chips could lead to ever smaller circuitry

Researchers have been hard at work for the past few years trying to build computer chips using self-assembling circuitry built of molecules — meaning that they’re incredibly teensy. Some researchers at MIT seem to have gotten the hang of this nano-business, according to a paper just published in Nature Nanotechnology (which also happens to be our favorite magazine after Offset Print Enthusiast). They’ve made a pretty good leap forward recently, by using electron-beam lithography to make patterns of nano-posts on a silicon chip, which are deposited with special polymers, resulting in a hookup between the polymer and the posts which arrange themselves into useful patterns all on their own. The MIT researchers have found the polymers they’re testing capable of producing a wide variety of patterns that are useful in designing circuitry. In the short term, uses could include magnetic nanoscale patterns being stamped onto the surfaces of hard disks using the tech, but there’s a lot more researching to be done before the self-assemblers get busy in consumer goods.

Microprocessor mega-shocker: self-assembling silicon chips could lead to ever smaller circuitry originally appeared on Engadget on Wed, 17 Mar 2010 21:32:00 EST. Please see our terms for use of feeds.

Permalink   |  sourceMIT News  | Email this | Comments

Researchers teach liquid to flow uphill, hope to cool future CPUs (video)

Another day, another experimental CPU cooling method that may or may not come to pass. We’ve seen “thermal paste” from IBM and polyethylene from MIT, and now researchers at the University of Rochester have developed a method for coaxing water along nanometer-scale grooves carved into silicon. So hydrophilic are the patterns that water will even flow against gravity (and we’ve got the video to prove it). Not only are the structures so precise and nondestructive that the surface feels smooth to the touch, but they also trap photons, according to The New York Times, “so the grooved silicon appears pitch-black.” And who knows? Maybe your next PC will be cooled by streams of water flowing freely inside the case. It’s a nice image, anyways. Peep the video after the break to see it in action for yourself.

Continue reading Researchers teach liquid to flow uphill, hope to cool future CPUs (video)

Researchers teach liquid to flow uphill, hope to cool future CPUs (video) originally appeared on Engadget on Tue, 16 Mar 2010 16:24:00 EST. Please see our terms for use of feeds.

Permalink New York Times  |  sourceUniversity of Rochester  | Email this | Comments

MIT Researchers Discover New Energy Source

MIT_Carobon_nanotube.jpg

It seems like we’ve been looking for better battery technology for
decades, but it turns out some MIT researchers may have finally solved
the problem.

A team of scientists have discovered a microscopic energy source that
can generate electricity using nanotechnology
, with the hope that it
could be used some day for creating more environmentally friendly
batteries, CNN reports.

The experiment coats organic carbon nanotubes with a thin layer of
fuel and employs something called a thermopower wave (which sounds
powerful). The result could power future computers and cell phones
using batteries that are 10 times smaller than before, while retaining
the same power output.

And they could be incinerated or just degrade over time without
leaving heavy metal residue in the environment, the report said.
There’s no word yet on whether this will even scale properly to a
consumer-level product, but here’s hoping.

Image credit: MIT/Christine Daniloff

Stanford develops safer lithium-sulfur batteries with four times the charge of lithium-ion cells

Longer battery life is high atop our list of gadget prayers, and the brainiacs at Stanford are one step closer to making our dreams come true with a new lithium-sulfur technology. Half of this trick lies in the silicon nanowire anode that the same team developed back in 2007, whereas the new cathode consists of a similarly commodious lithium sulfide nanostructure. Compared to present lithium-ion batteries, Stanford’s design is “significantly safer” and currently achieves 80 percent more capacity, but it’s nowhere near commercial launch with just 40 to 50 charge cycles (Li-ion does “300 to 500”) due to the compound’s rapid degradation. That said, we’re promised a theoretical quadruple boost in capacity as the technology matures, so until then we’ll keep that hamster running in our backpack.

Stanford develops safer lithium-sulfur batteries with four times the charge of lithium-ion cells originally appeared on Engadget on Sun, 14 Mar 2010 07:29:00 EST. Please see our terms for use of feeds.

Permalink Technology Review  |  sourceNano Letters  | Email this | Comments

Newfangled nanoscale scanning technique could improve heart health

Oh, nanotechnology — your wonders never cease. Boffins at Imperial College London have been able to use live nanoscale microscopy (a technique called scanning ion conductance microscopy) in order to see the surface of the cardiac muscle cell at more detailed levels than those possible using conventional live microscopy. Without getting too gross on you, the new process could lead to improved designs of beta-blockers, the drugs that can retard the development of heart failure. Researchers are hoping that the findings could also lead to “improvements in current therapeutic approaches to treating heart failure and abnormal heart rhythms,” and while these exceptionally detailed images are helping the cardiac muscle right now, we’re hoping that this stuff could also bleed over to other fields of medicine. Ventricles crossed!

Newfangled nanoscale scanning technique could improve heart health originally appeared on Engadget on Sat, 27 Feb 2010 11:29:00 EST. Please see our terms for use of feeds.

Permalink Physorg  |  sourceImperial College London  | 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