Nanotechnology -- Engadget

nanotechnology posts

Researchers craft all-electric spintronics, vie for guest spot on Mindfreak

by Darren Murph posted Nov 4th 2009 at 11:01PM

Unfortunately for us, we've no certified rocket scientist on staff. That said, we're absolutely convinced that the whiz-kids over at the University of Cincinnati are more than up to the task of improving a science that may or may not actually be useful in real things before 3028. As we continue to hear more about spintronics (described as "transistors that function by controlling an electron's spin instead of its charge"), a team of UC researchers have stumbled upon a novel way to control an electron's spin orientation using purely electrical means. In fact, one member calls this discovery the "holy grail of semiconductor spintronics," though we're guessing it'll still be a few ~~years~~ centuries before our hard drives are fetching data 100,000x faster and our batteries last longer than our desire to use them.

Planet's smallest model train set revealed to macro lenses, microscopes (video)

by Darren Murph posted Oct 26th 2009 at 8:21AM

New Jersey's own David Smith is enjoying his 15 minutes right about now, as the world is finally talking about his model train set. You see, this model train set isn't just any model train set. No -- it's probably the world's smallest, most ridiculous and most awesome all at once (all at once). The so-called James River Branch community has been in the works for months on end, and the $11 working locomotive is 35,200 times smaller than a real one. Of course, the moving trains are really just attached to the top of a rotating tube, but you can certainly pretend you never heard that spoiler if you'd like. Check the video after the break -- the kid in you will thank us.

Continue reading Planet's smallest model train set revealed to macro lenses, microscopes (video)

World's smallest laser cracks open the door to THz CPU race

by Vladislav Savov posted Aug 17th 2009 at 5:49AM

So you thought 100nm was about as narrow as lasers could get, huh? Well think again brother, because scientists at Norfolk State University have now demonstrated a 44nm 'spaser' that performs a laser's functions by the alternative means of surface plasmons. By using such an unorthodox technique, the researchers have been able to overcome the minimum size limitation to lasers, and they even claim spasers could be made as small as 1nm in diameter. Peeking into the (not too near) future, this could improve magnetic data storage beyond its current physical limits, and even lead to the development of optical computers that "can operate at hundreds of terahertz" -- and here you were, thinking that your brand spanking new Core i7 system with Blu-ray was future-proof.

DNA computer solves logical problems, inches closer to practical use

by Vladislav Savov posted Aug 10th 2009 at 12:06PM

The world of biomolecular computing is hardly a lonely place: bacteria, enzymes, and all manner of chemicals have already been used to perform basic automated tasks. DNA computers are arguably the most advanced organic form of "autonomous programmable computing devices," with one already boasting a pretty tight game of Tic-Tac-Toe. The latest, put together by the Israeli Weizmann Institute, advances things with its ability to correctly respond to problems of logic. By feeding molecular rules and facts into the system, the researchers are able to program DNA strands to produce yes and no answers to basic questions. Programming is said to be technically identical to that used in electronic devices, with a robot compiler converting the programming language into molecular-level information. The ultimate aim of the project is to produce miniscule disease-fighting bots that can battle infections within the human body -- provided the DNA-programming drones don't go all Yul Brynner on us.

[Thanks, Karl]

Philips to unveil saliva-based roadside drug test later this year

by Laura June posted Aug 6th 2009 at 6:11AM

In the vein of the breathalyzer, Philips has developed an on-the-go drug test, that can be used by the side of the road to test suspected imbibers for cocaine, heroin, cannabis, amphetamines and methaphetamine. Unlike the standard alcohol testing equipment, this one is used by having the suspect spit into a small receptacle, which is then inserted into the measurement chamber which contains magnetic nanoparticles coated with ligands that bind to one of five different drug groups, delivering color coded test results in about 90 seconds. Philips, which has been developing the device since 2001, built it as an optical device that would be easy to mass produce for law enforcement. The company expects to ship them by the end of the year, though there's no word on exactly which markets will employ them as of yet.

[Via Coolest Gadgets]

Uber-nano nanolasers could lead to faster computers, reliable internet, neverending list of awesome things

by Laura June posted Aug 5th 2009 at 6:42PM

Researchers at Arizona State University and Technical University of Eindhoven in the Netherlands have been collaborating on a project to make lasers significantly smaller than the ones that are currently available, by finding a way around the traditionally accepted diffraction limit -- the idea that the size of lasers in any one dimension (say, thickness) is limited to half of the wavelength involved. One way around the size limitation, they've found, is to use a combination of semiconductors and metals like gold and silver, which causes electron excitement which helps confine the light in a laser to smaller spaces than that of the supposed limit. Using this method, the team has created nanoscale lasers that are one quarter of the wavelength or smaller -- as opposed to the previously accepted size limitation of one half of the wavelength. As far as consumer applications go, the smaller the laser, the easier it will be to integrate them into small electronics components, leading to things like faster products and more reliable internet access. Sounds great, right? Well, chill out: they're still working on it, with no word on when we'll see any street application of the nano nanolasers.

[Via Gizmag]

Tiny, printable batteries promise to change the face of obnoxious greeting cards forever

by Laura June posted Jul 2nd 2009 at 4:10PM

Researchers at the Fraunhofer Research Institution for Electronic Nano Systems ENAS in Chemnitz led by Prof. Dr. Reinhard Baumann have unveiled tiny, printable batteries that they hope to put into production for pennies apiece. The new battery prototype is primarily composed of a zinc anode and a manganese cathode that can be screen printed and covered with a non-printed template cover. Each mercury-free battery weighs less than one gram, and can individually produce about 1.5 volts of electricity. By placing several batteries side by side, however, up to 6 volts can be generated. The institute has already produced these little power houses in the lab, and hopes to see them into production by the end of the year. The batteries have a relatively short lifespan, making them suitable for applications such as powering greeting cards. All we can say is that this battery would have made the card we got two years ago that sang "Word Up" much, much awesomer.

[Via Physorg]

Researchers create nanotube memory that can store data for a billion years

by Laura June posted Jun 9th 2009 at 10:32PM

Researchers at the Department of Energy's Lawrence Berkeley National Laboratory and UC Berkeley have developed an ultra-dense memory chip that is capable of storing data for up to a billion years (besting silicon chips by roughly... a billion years). Consisting of a crystalline iron nanoparticle shuttle encased within a multiwalled carbon nanotube, the device can be written to and read from using conventional voltages already available in digital electronics today. The research was led by Alex Zettl, who notes that current digital storage methods are capable of storing mass amounts of data, but last just decades, while, say, some books have managed to last nearly a thousand years, though the amount of data they contain is quite small. The new method, called shuttle memory, is based on the iron nanoparticle which can move back and forth within the hollow nanotu. Zettl believes that, while shuttle memory is years away from practical application, it could have a lot of archival applications in the future. There's a video after the break, hit the read link for more tiny details.

[Via The Register]

Continue reading Researchers create nanotube memory that can store data for a billion years

Corkscrew nanopropellers may one day deliver drugs internally

by Darren Murph posted Jun 1st 2009 at 12:56AM

Clearly, vaccinations are so three years ago. As the race continues to find the best, most mobile internal transportation device for delivering drugs to remote places within the body, Peer Fischer of The Rowland Institute at Harvard University has teamed with colleague Ambarish Ghosh to concoct the wild creation you see to the right. The glass-derived nanopropeller was designed to move in a corkscrew motion in order to plow through syrupy, viscous liquids within the human frame. The device itself is fantastically small, measuring just 200 to 300 nanometers across at the head and 1 to 2 micrometers long. Fischer points out that each of these can be controlled with a striking amount of precision via an external magnetic field, though we don't get the impression that they'll be on to FDA testing in the near future. Ah well, at least our gra, er, great-grandchildren will be all taken care of.

Ultra-powerful laser could make incandescent light bulbs more efficient

by Darren Murph posted May 31st 2009 at 4:26PM

Look, LED light bulbs are fanciful, great for Ma Earth and a fine addition to any home, barber shop or underground fight club. But let's be honest -- even the guy that bikes through blizzards to get to work and wears garb that he grew in his basement isn't apt to shell out $120 a pop to have what's likely the most efficient light bulb American dollars can buy. Enter Chunlei Guo from the University of Rochester, who has helped discover a process which could morph a traditional incandescent light bulb into a beacon of burning light without using nearly as much energy as before. In fact, his usage of the femtosecond laser pulse -- which creates a "unique array of nano- and micro-scale structures on the surface of a regular tungsten filament" -- could enable a bulb to increase output efficiency in order to emit 100-watts worth of light while sucking down less than 60-watts of power. Per usual, there's no telling when this new hotness is likely to hit the commercial realm, but one's thing for sure: we bet GE's paying attention.

[Via Physorg]

Purdue researchers concoct new invisibility cloak, plan Walmart debut

by Darren Murph posted May 22nd 2009 at 9:21AM

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)]

Continue reading Purdue researchers concoct new invisibility cloak, plan Walmart debut

Aussie whiz-kids can cram 1.6TB on a DVD-sized disc, go Outback tonight

by Darren Murph posted May 21st 2009 at 6:06AM

Don't take it personally, Blu-ray -- we still love you and all, but there's just something dreamy about baking 1.6TB of information onto a blank piece of optical media we can actually afford. According to a new report, a crew of researchers at Swinburne University of Technology in Australia have exploited the properties of a certain gold nano-rod that will theoretically enable them to shove 300 DVDs worth of data onto a single disc. Calling the method "five-dimensional optical recording," the technique "employs nanometer-scale particles of gold as a recording medium," and according to developers, it's primed for commercialization. Essentially, these gurus have figured out how to add a spectral and polarization dimension, giving them the ability to record information "in a range of different color wavelengths on the same physical disc." As for the chances this actually makes it out of the laboratory and into the lives of real humans? Slim, Jim.

[Thanks, Sam]

Microbot controls swarm of bacteria, puts all flea circuses to shame

by Ross Miller posted May 17th 2009 at 4:42PM

Sylvain Martel, what hast thou sown? The director of the NanoRobotics Laboratory at the École Polytechnique de Montréal this week is presenting his latest microbot at ICRA in Japan, and it's got a pretty crazy trick. The solar panel-equipped device sizes up to about 300 x 300 microns, and using a sensor to detect nearby pH levels, it's been shown as capable of controlling a swarm of 3,000 bacteria using electromagnetic pulses. Sure, Martel suggests there'll be some eventual medical uses for the technology, but we'd be lying if we said the video demonstration didn't give us the willies. See for yourself in the video linked below.

Read - Announcement
Read - Video

Flexible, stretchable, rubbery OLED prototype shown off in Tokyo

by Laura June posted May 11th 2009 at 11:46AM

Electrical engineering researchers at the University of Tokyo have developed a flexible, stretchable OLED that acts something like rubber, and does not tear or break when stretched. The material is produced by spraying a layer of carbon nanotubes with a fluoro-rubber compound, creating a rubbery, conducive material. The current, monochrome display prototype has a resolution of just 256 pixels, is 10-centimeters square, and can apparently be folded about 1,000 times with out falling apart, tearing, or imploding. The team is presenting its findings in the British science journal Nature Materials this month.

[Via Slashgear]

Fukitorimushi cleaning bot is just like a pet -- only cleaner, quieter, better behaved, and more pillow-shaped

by Laura June posted May 7th 2009 at 11:13PM

Panasonic recently unveiled a new kind of cleaning robot at the Tokyo Fiber Senseware Expo in Milan. Called Fukitorimushi, the small service bot is covered in Nanofront, a nanofiber polyester fabric which can absorb oil and pick up small paricles of dust. It moves a bit like an earthworm, crawling about the floor using several light sensors to root out the dirt, and can navigate itself back to its charging station when it needs more juice. Designers of the spiffy little guy seem to think that owners will bond to it as if it were a pet. No word on when these dudes will be commercially available, but we'll let you know as soon as we score one of our very own -- we're thinking about calling it Sal. There's a video of it doing its rather unnerving business after the break.

[Via Robots.net]

Continue reading Fukitorimushi cleaning bot is just like a pet -- only cleaner, quieter, better behaved, and more pillow-shaped