Revealing The Invisibility Principle Of The New Invisibility Cloak

British woman writer J.K Rowling

A scientific research team in the United States recently "

"Invisible" principle

Researchers at Duke University say that the stealth materials they produce can guide microwave "steering" to avoid detection of instruments, thus preventing objects from being detected.

Just like light and radar waves, the principle of microwave detecting objects is that objects obstruct the way of microwaves to pass through, making them produce shadows and thus "manifest".

This material, which is applied to the surface of the object, can lead the microwave to move around and play the role of stealth the object.

David Smith, a professor and researcher at Duke University, said that the "invisibility cloak" designed by them is like a yellow bath towel, made up of thousands of similar artificial glass.

He explained that when microwaves reached objects with cloaking materials, microwaves would go around, and the whole process would be like a flow of water passing through a slippery rock.

The research is published in the 15 issue of science.

Yet to be improved

Microsoft National Radio quoted Smith as saying that the cost of the invisibility garment is not high enough. "If you want to commercialize the technology, it will not cost much money."

Although the cloak has been developed to resist microwaves, researchers say the next step is to create "invisibility cloak" that can resist visible light, so that the human eye can not see objects with invisible materials.

Smith participated in the manufacture of a "invisibility cloak" in 2006.

Compared with the "invisibility cloak", the newly developed stealth material is quite different.

Smith said that the newly developed stealth material can expand the range of electromagnetic waves, which is conducive to the researchers to further develop stealthy materials that can distort visible and infrared rays.

Military application

Researchers say that "invisibility cloak" is not for people to seek novelty and entertainment, and the military is likely to be the first beneficiary of the technology.

Whether they are ships, fighters or tanks, they can be completely disappeared before the enemy by stealth technology.

John Peder Lee, a theoretical physicist at the Imperial College London, predicts that in the next 5 years, the military will use the technology to camouflage ships and tanks to prevent them from being detected by the enemy. "This day is not far away, but it depends on the urgency of people's needs and how much money they are willing to pay."

"Invisibility cloak" can not only make objects invisible, but also ingeniously evade the principle of microwave detection.

Smith said that this principle can solve the problem of shielding the mobile phone signals, so that people can make unobstructed calls in the elevator.