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[NC] Optical Cloaks Hides Objects In Broad Daylight.

post #1 of 6
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http://www.newscientist.com/article/...-daylight.html

Quote:
Now two different cloak designs have managed to conceal bumps over the full visible spectrum. Chris Gladden and Majid Gharghi of the University of California, Berkeley, etched holes into a thin layer of silicon nitride deposited on porous glass. Varying the diameter of the holes between 20 and 65 nanometres – smaller than the wavelengths of visible light – changed the way the layer refracted light, allowing its interaction with the porous glass substrate to cloak a small bump

The Berkeley demonstration "is an excellent and significant advance over their previous work in the infrared", says George Barbastathis of the Singapore-MIT group. But he says that using a natural material like calcite offers a big advantage over nano-fabrication. "Our cloak is about 10,000 times bigger than the Berkeley cloak, and also, I estimate, more than 10,000 times cheaper."
So it's a far cry from the metamaterial laden cloaks we've seen before. This thing is working on a whole other level.

Think of it as invisibility cloaks 2.0.
post #2 of 6
10,000 times bigger is what? 2x2mm?
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post #3 of 6
Quote:
Originally Posted by DuckieHo View Post
10,000 times bigger is what? 2x2mm?
Give them some credit. I'm sure its probably more like 4x4mm.
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post #4 of 6
Thread Starter 
Quote:
Originally Posted by Kirmie View Post
Give them some credit. I'm sure its probably more like 4x4mm.
You can't just go from tiny to football sized in a few months. Like any emerging tech, it's a gradual process.
post #5 of 6
Didnt david copperfield do this 20 years ago with the Statue of Liberty? Old news is Old.
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post #6 of 6
i want to wear one of these and just run around a grocery store in the dairy isle joker laughing.....it will be amazing....

\\IN BEFORE THE FIRST HARRY POTTER REFERENCE
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