Posted 10/09/09 at 09:06:48 PM by Ryan Whitwam

NASA just crashed two probes into the moon. Don’t worry though, they totally meant to do it. The two probes were slammed into the lunar surface at over 5000 miles per hour in order to throw up a plume of debris that could be analyzed for signs of water ice. Those non-science types watching online were hoping for a visible plume of dust from the impacts. They were disappointed.

The expected 6-mile plume of debris didn’t materialize, but according to NASA scientists it went just fine on their end. LCROSS principal investigator Tony Colaprete said, “I saw variations in the spectra. I'm thrilled—that's a very good sign. The spectra is where the science is."

The Centaur probe hit the surface first, while being monitored by the LCROSS probe. The LCROSS then took the plunge itself. The area of impact was selected because the craters near the South Pole are never completely illuminated by the sun, meaning ice could be present. Colaprete said in the press conference, “If there's water there, or anything else interesting, we'll find it."

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Posted 08/21/09 at 06:38:22 PM by Pulkit Chandna

Ford’s quest for contour-hugging brake lights has led to a major breakthrough in the development of flexible LEDs. A group of international scientists has developed a new process for manufacturing ultrathin, flexible LEDs. The inorganic LEDs developed using this technique are not only slender and flexible like their organic counterparts, but just as durable and bright as inorganic LEDs are expected to be. Ford, the National Science Foundation and the U.S. Department of Energy jointly provided funds for this project.

The team behind this project consists of researchers from institutions in the US, Singapore and China. The new LEDs, though fully inorganic, possess qualities associated with both organic and inorganic LEDs. "We wanted to see if we could use inorganic LEDs in ways that exploit some of the processing advantages of organic LEDs,” John Rogers, a materials scientist at the University of Illinois, told the journal Science.

LEDs can be made to be almost transparent using the new technique in which LEDs are placed at a considerable distance from each other. The technique can be used to make figure-hugging LEDs to be fitted onto buses. It could also make it possible to weave optical electronics into textiles.

 

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Posted 12/25/08 at 08:00:00 AM by Norman Chan

We’ve heard the phrase “visual computing” being used a lot lately – it refers to the use of computers and graphical environments to interact with and manipulate heady data sets and other textbookish content. Well, we’ve encountered one of the most visually stunning and impressive examples of visual computing in San Francisco’s Morrison Planetarium, the new $20 million dollar facility that’s a part of the recently reopened California Academy of Sciences. This isn’t your daddy’s planetarium (nor is it Barack Obama’s famous $3 million dollar star charter, either).

The Morrison Planetarium is a technological marvel, enabling astronomers not only to show traditional star charts, but to guide visitors through an immersive fly-through of our universe – realistically rendered in real-time. We were fortunate enough to be invited for a private screening of the new exhibit, and went behind to scenes to check out exactly what PC hardware drives this modern stellar cartography lab. And before you ask – yes, the system can play Quake. 

We'll guide you through a tour of the planetarium, show you what visitors get to experience in the amazing digital presentation, and then walk you behind the scenes for an exclusive look at how the tech gods who built the whole system make it work.  Trust us, you'll be impressed.

 Hit the jump for the full story!

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Posted 10/23/08 at 02:21:29 PM by Alex Castle

These days it seems like “nanotube” is sort of a magic word. Scientists will say something crazy like “We’re building an elevator to space” and everyone else asks “How you gonna do that, scientists?” and they just say “carbon nanotubes,” and we’re like “oh, cool.” So go ahead and guess how scientists have created a kind of paper that’s 500 times as strong as steel and only weighs a tenth as much.

That’s right, it’s nanotubes. The paper, called “buckypaper,” is flexible in single sheets, and can be layered to form rigid plates. It’s being rapidly developed for commercial production, for use in everything from armor to laptops to fuel cells.

Ben Wang, one of the professors leading the charge to commercialize buckypaper, explains that the strength of the paper comes from nanotubes’ enormous surface area, saying “If you take a gram of nanotubes, just one gram, and if you unfold every tube into a graphite sheet, you can cover about two-thirds of a football field.”

What do you all think? How might we use this super-strong paper in the future? Hit the jump and let us know.

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Posted 10/15/08 at 03:09:48 PM by Alex Castle

Providing yet another reason to sit in front of your computer all day, a study out of UCLA has shown that searching the web may be good for your brain.

The study used an MRI to measure the brain activity of a group of seniors while they performed simulated internet search tasks, and also as they read a book. According to Dr. Gary Small, the tests showed that “when older people read a simulated book page, we see areas of the brain activated… When they search on the Internet, they use the same areas, but there was much greater activation particularly in the front part, which controls decision-making and complex reasoning.”

Of course, greater brain activity is good for keeping sharp (hence the popularity of Nintendo’s Brain Age series of games) so this study means that searching the net could help keep you firing on all cognitive cylinders as you age. However, the increased activity was only found in those who had experience with searching the internet, so if you have any older relatives who are still net-illiterate, it might be time to give them a few lessons in the fine art of Googling.

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Posted 10/13/08 at 03:49:51 PM by Alex Castle

When it comes to Moore’s law these days, it seems like everyone’s a cynic. However, now there’s one more reason to be optimistic about the future of miniaturization, as researchers have published a paper describing a lithography technique which may provide a new means of producing chip features smaller than 32nm.  

The technique involves the use of quasiparticles called plasmons to focus light at an incredibly high resolution. Chris Lee at Ars Technica describes the technology: “A lens, based on plasmons, can be created by a set of concentric metal rings. The fields from the plasmons in each ring act in such a way as to create a tightly focused spot of light. In principle, these lenses could focus light tightly enough to create features about five to ten nanometers in size.”

The problem with plasmon lenses is that they must be positioned at just 20 nm away from the wafer. The scientists claim to have overcome this hurdle with their new technique, which uses air pressure to control the lens’s distance from the wafer.

Significantly, the new technique eliminates the need to create a new photomask for each revision to the chip, potentially lowering costs and speeding up development.

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Posted 10/10/08 at 05:25:22 PM by Alex Castle

In what may be the biggest thing to happen to cryptography in a very long time, the world’s first computer network built with working quantum encryption technology has been demonstrated in Vienna.  The network connects six locations with a total 200 km of fiber optic cable and the encryption system is said to be completely unbreakable, according to the BBC.

The network transmits a stream of millions of individual photons a second through the cable, and can detect if anyone has attempted to listen in on the stream.

Gilles Brassard, of Montreal University explained to the BBC how the system can be unbreakable: “All quantum security schemes are based on the Heisenberg Uncertainty Principle, on the fact that you cannot measure quantum information without disturbing it.  Because of that, one can have a communications channel between two users on which it’s impossible to eavesdrop without creating a disturbance.  An eavesdropper would create a mark on it.”

If an intrusion is detected, the data transfer is immediately rerouted through different nodes.

Pretty cool, huh? Let us know what you think of this new technology after the break.

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Posted 09/22/08 at 01:49:11 PM by Michael Brown

In one second, the nuclear fusion process taking place inside the sun produces enough energy to satisfy the needs of the earth’s population for nearly 500,000 years. Photovoltaic cells are capable of capturing some of that energy and converting it into usable electricity; unfortunately, today’s technology can’t do this very efficiently.

French physicist Edmond Becquerel first described the photovoltaic effect in 1839. He discovered that some materials were capable of producing small amounts of electricity when exposed to sunlight. The first photovoltaic cell, however, wasn’t created until 1883, and more than 70 years passed before the next major scientific advance took place, when researchers at Bell Labs developed the first crystalline silicon photovoltaic cell in 1954.

More on the solar cell after the jump!

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