CCTV.com - CNTV English - CCTV News

Miniature version of Harry Potter’s invisibility cloak created

03-26-2013 16:51 BJT

BEIJING, March 26 (Xinhuanet) -- A miniature version of Harry Potter’s invisibility cloak is now created by physicists who published this invention in Tuesday’s issue of the New Journal of Physics.

The created cloak can works only in microwave light, by using a technique called mantle cloaking to cancel out light waves that bounce off the shielded object so that none survive to reach an observer's eye. This is different from the pervious invention that bends light rays around an object so that they don't scatter, or reflect off it.

The physicists experimented on a 18 centimeters cylindrical rod, and succeeded in hiding it in microwave light.

"The advantages of the mantle cloaking over existing techniques are its conformability, ease of manufacturing and improved bandwidth," said study co-author Andrea Alu, a physicist at the University of Texas at Austin.

"We have shown that you don't need a bulk metamaterial to cancel the scattering from an object — a simple patterned surface that is conformal to the object may be sufficient and, in many regards, even better than a bulk metamaterial," he said.

"When the scattered fields from the cloak and the object interfere, they cancel each other out and the overall effect is transparency and invisibility at all angles of observation," he added.

The researcher said this invention brings us one step closer to create the invisibility cloak that could hide a person in daylight.

 

Editor:James |Source: Xinhua

Hot Videos view more

The celebrations are still continuing as the victorious coach, Joachim Loew, has been honored for his achievement in his hometown of Freiburg.
Germany coach Loew honored in hometown of Freiburg

Chinese men´s national team continued its preparations for next year´s Asian Cup, as they managed a one-all draw against visitors Jordan during a football friendly in Harbin, the capital city of Northeast China´s Heilongjiang Province.
China held to 1-1 draw by Jordan

The defending world champs came into the contest with a perfect 6-and-oh record, but they would be in for a tough first half before opening things up in the second.
USA beat Slovenia 119-76 in quarter-finals

Hot Stories more

UK authorities believe killer of James Foley is a British national

Across the UK the hunt is on for James Foley’s killer, who authorities believe is a British national. As Richard Bestic reports from London, Prime Minister David Cameron cut short his summer break to lead his government’s response.

Israeli war jets renews Gaza strike as truce talks stalled

Three Palestinians were killed and 40 others wounded in the intensive Israeli war jets´ airstrikes on the Gaza city on Tuesday night, shortly before an end of a 24-hour ceasefire in the Gaza Strip,

Missouri police arrest dozens after violent night

As the protests in the town of Ferguson, Missouri turned violent with police facing ´heavy gunfire´ from some ´criminal elements´, cops fired tear gas, stun grenades and arrested 31 demonstrators on Monday night.

Picture in news more

More Video News

Choose TV Program