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Visionaries

World's Smallest Light Bulb

Scientists at UCLA have constructed the world's smallest light bulb. When it's turned off, the tiny filament is invisible to the naked eye. Flip the switch, however, and it becomes a tiny pin-prick of light.

The minuscule bulb was created using carbon nanotube technology, a much touted scientific breakthrough that has, until now, been used to do little else other than create portraits of our dear leader. The carbon filament that creates the light is only 100 atoms wide -- tens of thousands of times smaller than the filament used by Edison in his first light bulb.

What practical purpose does such an itty-bitty light serve? Well, none, but research from the project could prove invaluable. The carbon nanotube that is large enough that the traditional laws of thermodynamics apply, but small enough to be considered "molecular," the scale at which the laws of quantum mechanics come into play.

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Computers

Scientist Creates Microscopic Obama Portraits

Scientist Creates Microscopic Obama Portraits
Barack Obama has made quite a stir since winning the election two weeks ago. He's promising change, big change, and with Democrats taking control of the House and Senate, he should have all the tools he needs to deliver it. His promises may be big, but Assistant Professor John Hart at the University of Michigan is highlighting his persona in something very, very small, by creating a series of microscopic portraits he calls "nanobamas."

Hart works at the Department of Mechanical Engineering, where research into carbon nanotubes is performed. Nanotubes were used to create the portraits, each about a half-millimeter across. The portraits are so small that an electron microscope is needed to photograph them.

Carbon nanotubes are a super-material that promise to let us to do everything from climb buildings to take an elevator into space. This particular use is rather less practical, but Hart's hope was that creating these nanobamas would increase awareness for his field of research. But, with the current economic downturn, the ongoing war in Iraq, and dozens of other crises facing the President-to-be, we think it's going to take something a little...bigger to capture his attention. [From: Science Daily]

Spider-Man Super Powers for the Rest of Us

Spider-Man Powers for the Rest of Us

Some good news if you've always been jealous of Peter Parker's ability to scale walls in a leotard. Nicola Pugno of Italy's Polytechnic University of Turin is spending precious research dollars to help man stick to walls -- though, sans-leotard.

The secret is carbon nanotubes, structures of carbon that are rolled into cylinders just one nanometer thick. These structures are so impossibly small, an Ebola virus is roughly 80x thicker.

Pugno's inspiration didn't come from your friendly neighborhood Spider-Man, but rather from geckos. That cute little guy in the Geico ads has the ability to stick to just about any surface you put him on, even managing to dangle from ceilings by one toe. This adhesive power is due to several arrays of microscopic hairs on a gecko's feet called setae, which then branch out into even smaller spatulas. These hairs are so small that they interact on a molecular level with whatever surface they touch.

Scientists have previously tried to mimic these forces with carbon nanotubes, but have not been able to develop anything strong enough to support the weight of a human being. Pugno has taken the science a step further by splitting the tubes like the hairs on a gecko's feet. This split-hierarchical structure increases the adhesive qualities of the carbon tubes so dramatically that Pugno claims they could be used to make gloves and boots that would support the weight of a human. Such apparel could have applications in high-rise construction or even in space, where it would keep astronauts secured to a ship or space station.

Hey, we're for anything that would make cleaning the gutters a lot more fun.

From Discovery News

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