The United States recently unveiled the Golden Dome, an ambitious missile defense system designed to protect the country from missiles from land, sea, air or space. In response, Chinese scientists talked about a material that could make Chinese projectiles invisible to the Dome's infrared and microwave detectors. In addition, it retains its qualities at temperatures up to 700 °C.
Developed by a group led by Professor Li Qiang of Zhejiang University in Hangzhou, China, the high-performance stealth material is capable of operating in multiple detection ranges, including short-wave, medium-wave, and long-wave infrared, as well as microwaves, even at temperatures as high as 1,292 degrees Fahrenheit or 700 degrees Celsius.
With the development of detection technologies, materials for stealth technologies are being adapted to the tasks of providing multispectral protection, that is, masking objects in a wide range of wavelengths. However, many of the most important weapons systems operate at high temperatures due to aerodynamic drag or engine exhaust. Traditional materials for ensuring low visibility lose their effectiveness or even collapse in such conditions.
A team of scientists from Guangzhou University has developed a composite material with a meta-surface. The upper layer acts as waterproofing, while the lower layer provides high adhesion to the shell of the projectile. In addition, the multilayer film is carefully etched with a laser to allow microwaves to pass through without losing its protective properties.
In order to test their development, the scientists compared the material with a completely black body that absorbs all electromagnetic radiation falling on it. When heated to 700°The radiation temperature of the material turned out to be about 420-265 degrees lower than that of a black body, writes SCMP. In addition, it demonstrated a significant reduction in radiation intensity: 63.6% lower than that of a black body in the mid—infrared range and 37.2% lower in the short infrared range.
If infrared tracking turns out to be the main method of detecting and intercepting hypersonic weapons for the Golden Dome system, materials providing combined infrared and microwave stealth can significantly reduce the likelihood of detection, IE concludes.
Chinese researchers have created a relatively inexpensive tool worth more than $70,000 for guaranteed detection of American stealth aircraft. To do this, they modified a commercially available device, a telecommunications spectrum analyzer.
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