China claims super material makes warplanes INVISIBLE
By Tracy You For Mailonline
Published: 13:26 EDT, 12 March 2018 | Updated: 14:19 EDT, 12 March 2018
China has built an assembly line to mass produce cutting-edge 'super materials' that can perform the previously impossible, according to the Chinese state broadcaster.
So far, the assembly line located in a lab in Shenzhen has manufactured different types of materials, including one that renders objects invisible, reported China Central Television Station in a documentary released last week.
Although the station didn't explain what the invisibility cloak 'metamaterial' would be used for, according to Chinese news portal Sina, it is likely to be used on the country's warplanes, particularly the J-20.
Chinese scientists have managed to produce an 'invisibility cloak' metamaterial in bulk, said China's state broadcaster. The team reportedly work in a laboratory (pictured) in Shenzhen
The programme, aired on China Central Television Station, shows workers making the base material (pictured) for different metamaterials, which the Chinese call 'super materials'
What the Chinese refer to as 'super materials' are generally known as metamaterials, which are a new class of finely-engineered surfaces that could have properties unachievable with conventional materials.
Some metamaterials can bend infrared radiation such as visible light, which means they could be used to create invisibility cloaks.
And according to the Chinese Central Television Station, the Chinese scientists have managed to make such invisibility materials in bulk.
Metamaterials are a new class of surfaces which have been engineered on the nanoscale, as small as a billionth of a metre wide.
The materials used to construct them are arranged in certain patterns or shapes, designed to perform specific tasks.
Most are created on computers and 3D-printed as plastic blocks or slabs, although metals and other materials can also be used.
One such task is to bend electromagnetic radiation around an object.
The first examples only worked with long-wavelength radiation, such as microwaves, while others altered the path of near-infrared radiation.
Some can bend sound waves to focus them for medical purposes or to create speakers which direct sound to a specific spot.
Some scientists have claimed there is nothing stopping them from scaling their inventions up to hide objects from visible light.
So far, however, this has proved more of a challenge.
When light is shone upon an object it is either reflected or absorbed, dictating how it appears to a human eye.
Using metamaterials, the interaction of particles with light can be changed so that the object appears invisible, or as something completely different.
The report took the viewers inside the mysterious lab where Jin Xi, a doctor of Materials Science, and his team were busy feeding pieces of material from one machine to another.
Each piece, 80cm long and 60cm wide, is said to be the plated with bronze and would be used as the base material for the Chinese 'super material'.
A layer of special film, which could show some 20,000 patterns once exposed to light, will be added to this base material.
Sina, a Chinese news site, suggested the invisible material is likely to be used on fighter jets, in particular J-20 (pictured), which is China's latest warplane armed with long-range missiles
China's J-20 has been compared to America's F-22 Raptor in terms of combat capabilities
The patterns, as tiny as 0.2 square millimetres, are said to contain thousands of micro-structures invisible to the human eye.
These micro-structures are used to control the properties of metamaterials.
The report didn't mention what type of 'super material' the workers were making, but it claimed that Chinese scientists have developed metamaterials to help develop the country's aviation industry.
A report from Sina, one of China's largest news portals, claimed on March 11 that the lab in question is the State Key Laboratory of Metamaterial Electromagnetic Modulation Technology in Shenzhen, a state-funded lab established in 2011.
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