Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Monday, 2 May 2011

Tactile kiss transmission device finally makes it okay to smooch your computer (video)


They say the vast majority of communication is done physically rather than verbally, but in the realm of technological advances we seem to have rather neglected the transmission of physical contact. Thankfully, there's always Japan to provide us with off-the-wall innovations, this latest one being a kiss transmission device that will record, relay, and -- if you wish it -- replay your finest tongue gymnastics. It's the height of simplicity at the moment, with a plastic implement taking input from one person's mouth and conveying it to a second box, intended to be gobbled up by the recipient of this techno-affection, who may respond in kind or just sit back and enjoy the thrill of it. The researchers sagely point out that there's more to be done, as the sense of taste, manner of breathing, and moistness of the tongue are all important aspects of a kiss that have yet to be recreated. Once they do get their kiss transmitter to v2.0, however, they envision a pretty neat market for it in reselling kiss replays performed by celebrities. For now, you can see a celeb-free video demo after the break.

Sunday, 1 May 2011

Nanocones make solar cells more efficient, sinister looking


Going green is de rigeur, so the sun is becoming a much-preferred source of power. However, solar cells' inefficient harvesting of helical energies is a major reason they haven't usurped the power of petroleum. Good thing the big brains at Oak Ridge National Labratory are looking to change that with nanocone-based solar technology. The teeny-tiny cones are made of zinc oxide and create "an intrinsic electric field distribution" to improve electrical charge transport within solar cells. We aren't sure what that means, but we do know the prickly-looking design provides a 3.2 percent light-to-power conversion efficiency that's a substantial improvement over the meager 1.8 percent offered by today's flat photovoltaics made of similar materials. That's 80 percent more efficient, and 100 percent more awesome.


VIA  Engadget, Physorg
SOURCE  ORNL

Saturday, 30 April 2011

SIM-sized satellites to lift off with Endeavour this afternoon


They won't be beaming GPS or radio signals back to Earth anytime soon, but these one-inch-square satellites could one day travel to distant planets -- without fuel. Developed over a period of three years by a team of undergraduates at Cornell University, the Sprite chips could eventually be used for communication, flying in clusters like tiny space plankton. After hitching a ride on-board the final space shuttle Endeavour mission this afternoon, the three prototype satellites will be mounted outside the International Space Station, where they'll sit for the next few years, exposed to conditions found only beyond our atmosphere. Perhaps someday we'll even see some "Spprite" KIRFs by the time China's own space station is ready to hit the launchpad in 2020.

Formula 1 cars set to go all electric in the pit lane from 2013 onwards, racing purists outraged already


Formula 1, the pinnacle of gas-powered racing, is more often at odds with the eco-conscious electric car movement than in tune with it, but here's an exception to that rule. The FIA, the sport's governing body, announced back in December of last year a move to a hybrid four-cylinder turbocharged engine, which is still on track to be introduced in the 2013 season, and Williams boss Adam Parr has now enlightened us on some of the benefits of the new power setup. Noting that future cars' kinetic energy recovery system will be four times as powerful as on current models, Parr says enough electric juice will be available to power each one-seater through its journey into and out of the pit lane. That would mean that at least for the tame, speed-restricted portions of a race, the F1 gas guzzlers you know and love will be humming along in almost perfect silence while using good old electricity. Unfortunately, it's exactly that lack of vroom vroom that old timers like Bernie Ecclestone and Ferrari chief Luca di Montezemolo are afraid of, describing the new hybrid stuff as sounding "terrible" and insisting on the sport sticking to its V8 roots. Then again, as Parr says, if you don't move with the times, the times leave you behind.


VIA  Engadget, CNET
SOURCE  Reuters

Tuesday, 19 April 2011

HECTOR insect-inspired hexapod walking robot is a smooth operator (video)


We've seen some rather nightmare-inducing robots inspired by insects, but, once again, the folks at Germany's Bielefeld University have managed to turn something inherently creepy into a rather lighthearted affair. HECTOR, or hexapod cognitive autonomously operating robot, was designed to help its creators understand how exactly real animals manage to move so gracefully. Physically speaking, HECTOR sports six legs, with 18 joints in total, that protrude from an exoskeleton made of carbon fiber reinforced plastic. Its legs are given a rather life-like range of motion provided by a special set of "elastic joint drives" and a series of "biologically inspired" algorithms, and its exoskeleton can carry a load weighing 30 kilograms -- the robot itself weighs a mere 12 kilograms. What's more, HECTOR's built to learn from its experiences. Okay, so a three foot robotic insect that can carry nearly three times its weight does sound kind of creepy in retrospect, but HECTOR really does have some smooth moves. You can see for yourself in the video after the break.

Thursday, 14 April 2011

NASA animation depicts Curiosity's soft landing on Mars, courtesy of a 'sky crane' (video)


Sending a rover to a distant planet is no small feat, so we might as well make the landing even more spectacular, right? That's exactly what NASA has in mind for its Curiosity Mars rover, albeit for more practical reasons. Launching in late 2011 and expected to land on Mars in August 2012, this mobile laboratory will see a unique descent after entering the Martian atmosphere: there'll be the usual separation from the heatshield and backshell, but at about 380 seconds into the entry, the rover will be gently lowered down by wire from a "sky crane," as opposed to taking a leap of faith. Once the landing is complete, the hovering sky crane will then detach from the rover and fly off for a dramatic disposal -- let's just hope it won't hit the now-dormant Spirit. See for yourself in the video above.


VIA  Space, Engadget
SOURCE  NASA

Monday, 11 April 2011

US Navy's solid-state laser sets boat ablaze (video)


See that flaming wreckage in the picture above? A laser did that, mounted on board a second vessel similarly bobbing on top of the ocean last week. Yes, even though the United States Navy told us that legitimate seafaring death rays might take another decade to materialize, basic weaponized lasers are ready today, as the 15-kilowatt gun attached to the USS Paul Foster happily demonstrates. Of course, as you'll see in the video after the break, a beam of such minimal power takes a moment to burn through even an unshielded engine and ignite the fuel therein -- once we get some 100+ kilowatt lasers up in there, we shouldn't have such problems.

Sunday, 10 April 2011

Nanoparticles successfully take down MRSA bacteria


Traditional antibiotics like doxycyclin and vancomycin—the kind that many bacteria can now resist because of their overuse—work by getting inside the bacterial cell and interfering with essential cellular processes. Charged peptides have been proposed as alternatives, since they work by electrostatically interacting with the negatively charged bacterial cell wall, poking holes in the bacterial cell membrane and thereby killing the bacteria.

Nederberg et al. made charged polymers out of cyclic carbonates, which are nontoxic and biodegradable. Their degradation produces alcohol and carbon dioxide, and they degrade slowly, so they have prolonged antimicrobial functions inside the body and long shelf-lives outside of it. Because of their amphiphilic nature—they have a positively charged region, which is hydrophilic, but also a hydrophobic region—these nanoparticles spontaneously form small spheres in water, so they can hide their hydrophobic parts inside.

The nanostructures were effective against Gram-positive bacteria, methicillin-resistant Staphylococcus aureus (MRSA), and the fungus Cryptococcus neoformans, and had an efficiency comparable to that of conventional antimicrobials at their best, all while leaving red blood cells alone.

When injected into mice, the antimicrobial nanoparticles did not exhibit any significant toxicity over the test period, which lasted for fourteen days. It's not yet exactly the nanotechnological immunomodulation described by Neal Stephenson in The Diamond Age… but it's getting close.


VIA  Arstechnica
SOURCE  Nature

Sprint radar imaging system peeps inside walls, floors to detect bombs, tell-tale hearts


Back in 2005, we reported on a little something called the Prism 200, which allowed its holder to essentially see what folks were doing on the other side of a wall. Since then, we've seen plenty of devices that boast the same claims, but it wasn't until recently that the makers of the Prism 200 created a device that can actually see inside those walls. Looking something akin to an old school punch clock, Cambridge Consultants' Sprint in-wall radar imaging system provides 3D renderings of items embedded in walls, floors, and even ceilings. Where as existing X-ray systems require access to both sides of a wall, Sprint's radar setup allows users to see what's going on inside without dual access. As you might imagine, Cambridge is pushing this thing as a security tool, allowing for detection of bombs, drugs, dead bodies -- you know, the usual bad guy stuff. Sprint is currently undergoing testing. Full PR after the break.

Saturday, 9 April 2011

NASA's Aquarius Taste Seawater For You


NASA's Aquarius instrument will soon embark on its space mission to "taste" Earth's salty ocean. The Aquarius instrument, set to measure the ocean's surface salinity, recently made the trip from São José dos Campos, Brazil, to California's Vandenberg Air Force Base for final integration and testing before its scheduled launch on June 9. Aquarius will map the concentration of dissolved salt at the ocean's surface, information that scientists will use to study the ocean's role in the global water cycle and how this is linked to ocean currents and climate.


SOURCE  NASA

IBM shows smallest, fastest 155GHz graphene processor

IBM demonstrated its fastest graphene transistor, which can execute 155 billion cycles per second, which is about 50% faster than previous experimental transistors shown by the company's researchers.

The transistor has a cut-off frequency of 155GHz, making it faster and more capable than the 100GHz graphene transistor shown by IBM in February last year, said Yu-Ming Lin, an IBM researcher.

What's more, the thing is also IBM's smallest to date, with a gate length of 40 nanometers; that's 200 nanometers less than the 100GHz iteration. This smaller, faster transistor was produced as part of a DARPA research project that aims to develop high-performance RF (radio frequency) transistors.

We won't be seeing these in our personal computer anytime soon but might be operating war machines of the future.


VIA  Computerworld
SOURCE  Engadget