Want to turn invisible? Just use a cloak!

[_____V_____]

Originally Posted by Despare

I read about this a while back, I believe they have to work on developing an element that can be used to make the cloak...

I am thinking it would be a silicon-based compound. Makes sense to use an tetrahedral molecular structure (ala Diamond) which has many facets for complete dispersal of light.

Originally Posted by urgeok2

but they wont strip for satan ...

or will they ?

Of course they will.





"Hail Satan!"

[Despare]

Invisibility cloaks may be a bit closer to reality, researchers say, thanks to the development of two new materials that are the first to bend visible light the "wrong" way in three dimensions.

The so-called metamaterials are artificial composites designed to manipulate light in ways that natural materials can't—in these cases by refracting it backward.

If their cloaking capabilities are fully realized, metamaterials could make an object invisible by bending light waves so that they curve around the object and then reconnect, seemingly unaltered, on the other side—similar to the way water flows around a boulder.

"Of course cloaking captures everybody's attention, but these papers aren't [just] about cloaking," said Xiang Zhang, a professor at the University of California, Berkeley, and head of the research teams publishing related papers in two different journals this week.

"[The studies] are about the ability to engineer these material properties that never exist in nature. With that ability one can do many things, and cloaking is only one of them."

Such materials could also boost the power of microchips and antennas and allow the creation of "superlenses" that could image objects smaller than the wavelength of light, the study authors report.

Negative Refraction One new metamaterial, described in Science, is a microscopic arrangement of silver wires—each about 20 times thinner than a human hair—embedded in aluminum oxide.

The other metamaterial, detailed online in Nature, is a layer cake of alternating nanoscale strips of silver and magnesium fluoride that were cut into a fishnet pattern.

Both materials exhibit negative refraction—bending visible light in a different direction than expected in nature.

A pencil sticking out a glass of water, for example, normally appears slightly bent at the point where it meets the water's surface but is still seen submerged. With negative refraction, the pencil would appear to stick back out of the water.

Previous metamaterials have been able to achieve a cloaking effect only in two dimensions in larger microwave wavelengths that are not visible to humans.

In addition to having 3-D negative refraction for a broader visible light spectrum, the new advances help overcome the sticky problem of energy loss.

[ferretchucker]

This has been out for years! How else would they get the lower half of Daniel Radcliffe to disappear? Magic? :rolleyes:

[_____V_____]

Originally Posted by Despare

Negative Refraction One new metamaterial, described in Science, is a microscopic arrangement of silver wires—each about 20 times thinner than a human hair—embedded in aluminum oxide.

The other metamaterial, detailed online in Nature, is a layer cake of alternating nanoscale strips of silver and magnesium fluoride that were cut into a fishnet pattern.

Both materials exhibit negative refraction—bending visible light in a different direction than expected in nature.

Very interesting compounds. And both are abundantly found in nature too.

I like the way this research is headed.

[Posher778]

Originally Posted by _____V_____

I am thinking it would be a silicon-based compound. Makes sense to use an tetrahedral molecular structure (ala Diamond) which has many facets for complete dispersal of light.




Of course they will.





"Hail Satan!"

.....Rayne and Seri?

[stubbornforgey]

Originally Posted by _____V_____

Harry Potter-like invisibility cloaks could become a reality a lot sooner than you can imagine.

According to a recent National Geographic report , researchers have managed to find a way of bending the geometry of space so that light from all directions travels around an object.

Now, you might be fairly aware as to what happens when light does not hit an object.

It turns invisible!

Even in 2005, an invisibility cloak was pure science-fiction material. It was after an increased amount of interest in this field that the current advances have been made. While the science behind the bending of light is definitely not something new, it sure needs a lot of tweaking before us humans can effectively use it to make an object invisible.

All an invisibility cloak needs to do is to bend the light in a more sophisticated way than it is currently possible. However, reaching that kind of sophistication levels needs hard-core research.

Ulf Leonhardt, a visiting professor at the National University of Singapore, says that it's a question of the will and the money put into this field that will decide how soon you would see invisibility cloaks for sale on Ebay. At the same time, he does add that invisibility cloaks are feasible now.

That sure is a huge departure from the position in 2005 when this was all Star Trek or Harry Potter stuff!

I can do that without a cloak..
all I have to do is close my eyes..if I cant see you then you sure as hell
cant see me.
I have so many super powers..
See!! I have to wear shades when I get mad cos lasers shoot from them
and can cut you in half..

'stands on the bench and does the Zorro mark with her eyes'


:o

[Vodstok]

Originally Posted by Posher778

.....Rayne and Seri?

that would be incredibly creepy for the two of them to dress like that around each other....

[bwind22]

I'll be a little pissed if they give us invisibility cloaks before those sweet hoverboards seen in Back to the Future 2.

[hacelikewhoa]

I think it would be crazy and probably bad if we had invisibility cloaks. Every day people don't need them and it would probably cause a lot of more crimes because who could you pin it on if they were invisible? They should give it to the FBI or something to help them catch murderers and rapists although, I'm pretty sure if this ever would come to the market it would be unavailable anyway to the average person because I'm sure it would cost millions.