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Tag Archives: nano

Futurewatch: Transparent Nanotube Steel And Super Ion Batteries

By Evan Ackerman

Carbon nanotubes are pretty amazing things. They’re the strongest and stiffest material on Earth: a 1 millimeter diameter thread of them can support a weight of about 7 tons. The problem is that they’re expensive (and tricky) to produce, especially in any quantity that isn’t just broken bits of tubes. The journal Science is reporting that researchers at the NanoTech Institute of the University of Texas at Dallas have come up with a way of cheaply and quickly manufacturing large sheets (we’re talking meters) of long nanotube strands that are completely transparent and stronger than steel. The sheets are “spun” out of a self-assembled nanotube forest, and can be created with fairly simple machinery at a rate of up to 10 meters per minute. Furthermore, there doesn’t seem to be any reason why the sheets couldn’t be made as long or wide as you wanted. The last picture in the series above shows a nanotube sheet supporting droplets of water and juice that weigh about 50,000 times more than the sheet itself… Pretty cool. No information on cost, though. Read the paper here (PDF).

Laptop batteries that recharge to 90% in 10 minutes, after the jump.Continue Reading

Invisibility Cloak Is Closer To Becoming A Reality, Humanity Now Years Ahead Of The Romulans

By Jonathan Kimak

Now when I say closer, I mean that scientists have actually made something appear invisible, it just happens to be nano sized(one billionth of a metre). It’s still a step in the right direction, the direction of absolutely awesome invisibility suits and laser guns and women in tight, form fitting clothes. Well, 2 out of 3 at least.

Researchers at the University of California in Berkeley have created a material that bends visible light around nano-sized 3-dimensional objects, rendering them invisible. The material is artificially made and has properties smaller than the wavelength of light which allows for the unique effect.

An interesting point is how one professor chose to explain cloaking bigger objects like people.

In order to have the ‘Harry Potter’ effect, you just need to find the right materials for the visible wavelengths,” says Prof Hess, “and it’s absolutely thrilling to see we’re on the right track.

[ BBC News ] VIA [ Engadget ]