Cloak of a major breakthrough that allows the metal ball disappear.

<P Class=pictext align=center> </ P> <P class=pictext align=center> </ P> <P class=pictext align=center> reportedly circulated on the Internet in Japan developed the "invisibility cloak." .</ P> <P align=center> </ P> <P class=pictext align=center> </ P> <P class=pictext align=center> looks like a messy desk full of papers, but in fact Desk .tummy before an "invisible man." .</ P> <P class=pictext align=center> </ P> <P align=center> </ P> <P class=pictext align=center> Dr. Ma shows the "cloak", looks like a big .cake. .Cai Yunqi Photo </ P> <P> magical "cloak" holding in his hand, look like? .Tell you, like a thick cake! .Recently, the State Key Laboratory of Millimeter Waves Southeast University scientists on the cloak of a major breakthrough, Professor Cui Tiejun team successfully developed a "three-dimensional microwave range stealth carpet" in the microwave section of the world's first "invisibility cloak ."moved from a specific experimental device real three-dimensional space, once again closer to the people and the Harry Potter" invisibility cloak "distance. .The research results published in the June 1 this year, the top international journal "NatureCommunications" ("Natural communication") on the. .</ P> <P> Yesterday, the reporter heard the news to the laboratory visit, to see the "cloak" the true capacity. .</ P> <P> piece of the pie is the invisibility cloak? .Not believe it! .</ P> <P> into the State Key Laboratory of Millimeter Waves of Tokyo, received news that the paper "with a new type of artificial electromagnetic materials to achieve the three-dimensional invisibility carpet" lead author Dr. Ma Huifeng. .</ P> <P> Dr. Ma came to the lab to follow most years, the "cloak" locked in a cupboard in the house. .Magic cloak must have been golden, right? .No time to dream, Dr. Ma Congguizili cautiously endorse a piece of pie gray matter. ."Ah? Cloak to long like that ah? Is not a dress, but do not slip gray autumn." Journalists around, accompanied by a clear and true on the invisibility cloak a bit disappointed. .Weigh in my hands a bit, this mini-"invisibility cloak" is very light weight, diameter of about 100 mm, 50 mm thick, the surface has thousands of holes. .The "pie" link points unlock the center, a "cake" and immediately split into 17 "disc." .</ P> <P> a similar number of holes played, "CD" added together is called "cloak" it? .It turned out that mystery to many in the 17 holes on the disc. ."Stealth is a cheap raw material for carpet ordinary medium plate, such as mobile phones, the board is a media board. We passed the complex calculations to determine the size of each hole for each board, position, can not have the slightest deviation .Finally, the hole 17 to lay the board assembly to a piece of media, and numerous small holes are stacked together, played the role of microwave barrier. "Dr. Ma explains that the" cloak "under the protection of, and then advanced microwave transmitter .will suddenly become "blind" and can not detect objects under the invisibility cloak. .</ P> <P> it really have to believe the metal ball disappeared! .</ P> <P> order to allow a reporter to the "invisibility cloak" and "power" have an intuitive impression, Dr. Ma also on-site simulation of the experiment. .</ P> <P> experiment is very simple props, is "stealth" objects: a high 13 mm, 125 mm diameter metal objects, a flashlight-style microwave transmitter, a receiver and the mysterious "cloak." .</ P> <P> the first experiment: first metal objects on the desktop, open the microwave transmitter direct the ball, then the receiver can be observed by microwave scattering immediately hit the metal out. ."This is the normal process of microwave detection of objects, assuming that the metal object is an airplane, when the enemy has been exposed to under the monitor." Dr. Ma said. .</ P> <P> second experiment: "invisibility cloak" leave the party. .This "invisibility cloak" has been covered metal top. .Dr. Ma On "Flashlight" microwave transmitter, then re-observed by the receiver, we found that exposure to the "invisibility cloak" on the microwave mirror reflection of light actually occurred, and the light shines on flat ground, it is the same phenomenon. .The principle is to let the microwave experiments "to" the. .In practice, if the receiver is connected to the computer, then this time, the computer will display "This object does not exist." .</ P> <P> Dr. Ma said that the principle of microwave detection of objects is the object blocked the way of the microwave through to produce a shadow, and thus "profiling." .And their three-dimensional "invisibility cloak" can be guided microwave "to" avoid detection apparatus, thus preventing the object was found. .</ P> <P> its military super "arrogant" is too expensive! .</ P> <P> reporter learned that, so far, experimental research on the cloak limited to two dimensions, this cloak can only field a single polarization effects can play a two-dimensional measurement system. .</ P> <P> 2009 was of Southeast University and Duke University, successfully developed a two-dimensional microwave range, "invisibility cloak", this research is "Science" magazine included. .This time, Professor Cui Tiejun team to two-dimensional "invisibility cloak" expanded to "D", so that the "invisibility cloak" into a real three-dimensional space, which means that for the "invisibility cloak" research from the stage to demonstrate the practical application of the principle .. .</ P> <P> Dr. Ma Huifeng said, scientists have developed a "cloak" is not a novelty to meet psychological, "cloak" can play an active role in military operations. ."Like war, we want to hide tanks, aircraft, not detected by enemy radar. Can 'cloak' Phi in the tank, or even the whole aircraft, ground cover, play the purpose of the radar screen, in the battle .upper hand. A similar principle can be used for wireless communications, medical imaging, nondestructive testing, automotive collision avoidance radar, and other aspects. "</ P> <P> Dr. Ma told reporters that the biggest obstacle to achieving this goal is the three-dimensional" stealth .clothing, "the volume is too large, too thick, not acting freely. ."If you want an adult under the invisibility in the microwave, it may need to build a house with a stealth material, the possession of inside, which is obviously not realistic." Dr. Ma said with a smile. .And this production of "invisibility cloak" and "super material" is expensive, even just show palm-size mini version of "invisibility cloak", the total cost for up to one million. .</ P>.