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If the fighter puts on this material, it can achieve "super invisible" state.
According to the French media reported on January 26, a few days ago, American scientists made new progress in the research of cutting-edge technologies such as “Invisibility Cloakâ€. Researchers at the University of Texas at Austin used special plasma metamaterials to process light in the laboratory, allowing large objects that do not require support to disappear into three-dimensional space. It is reported that the military is particularly interested in this area of ​​research. The research was published in the New Journal of Physics. Researchers at the University of Texas at Austin have experimentally demonstrated that they can obscure cylindrical tubes up to 7.2 inches (approximately 18.3 centimeters) from microwaves in the energy spectrum. Part of the light is "invisible".
However, fans of the fantasy novel “Harry Potter†may have to be a bit disappointed because the human-eye visible spectral band is not the same as the band used in the above studies, so the experiment has no hidden effect for the human eye. However, the researchers pointed out that the experiment is an important example of plasma metamaterials capable of achieving "invisible" effects.
Andrea Aru, the co-leader of the study, said that if the fighter is covered with this material, it can be in an "ultra-invisible" state, and radar and microwave from any direction cannot detect its presence.
In the experiment, according to the principle that the plasma metamaterial can disperse light waves, the researchers put the shell made of the material on a cylindrical tube, and then irradiated the cylindrical tube attached with the shell with microwaves. As a result, the microwaves scattered by the plasma metamaterial collided with the microwaves reflected from the cylindrical tube, making it impossible to form reflections.
In a telephone interview, Aru said: “When the shielding and the scattering field of the object interfere with each other, they cancel each other out. At any point in time, this object will have a transparent and invisible overall effect.†He pointed out that any shape of object can be covered.
Aru pointed out that the "invisible" effect of plasma metamaterials is related to the wavelength of light, so this material can only "invisible" to very small objects, but its use is very important. "An important application of this material is to make it impossible for the radar to detect the presence of objects. It is a super 'stealth' equipment. (In military applications,) Our idea is that there is no need to paint this material at all. Fighters, but only painted in some key parts, such as the tail of the aircraft."
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