Diamond is used as a stealth material

In recent years, with the development of science and technology, various detection methods have become more and more advanced. For example, the use of radar to emit electromagnetic can detect aircraft, and the use of infrared detectors can also detect objects that emit infrared rays. At present, in order to adapt to the needs of modern warfare and improve their strength in military confrontation, countries in the world also regard stealth technology as an important research object, among which stealth materials occupies an important position in stealth technology. Use a small amount of nano-diamond suspended in the paint and spray it on aircraft, tanks, missiles, and warships, which can play a stealth anti-corrosion effect.

Why do ultrafine particles, especially nanoparticles, have a stealth effect on infrared and electromagnetic waves? There are two main reasons: on the one hand, because the size of nanoparticles is much smaller than the wavelength of infrared and radar waves, the transmittance of nanoparticle materials to this wavelength is better than Conventional materials are much stronger, which greatly reduces the reflectivity of the waves, making the reflected signals received by infrared detectors and radars become weak, so as to achieve the effect of stealth; on the other hand, the surface area of nanoparticle materials is higher than that of conventional coarse powder. It is 3 to 4 orders of magnitude larger, and the absorption rate of infrared light and electromagnetic waves is much larger than that of conventional materials. This makes the intensity of the reflected signal obtained by infrared detectors and radars greatly reduced. Stealth effect. At present, although stealth materials have broad application prospects in many aspects, most of the stealth materials that really play a role are used in aerospace and military components. There is a requirement for materials from the sky that they are light in weight. Nanomaterials have advantages in this respect, especially nanomaterials composed of light elements are widely used in aviation stealth.