BSU scientists developed radio-absorbing coatings to protect against electromagnetic radiation
The scientists of the Belarusian State University (BSU) developed radio-absorbing coatings to protect against electromagnetic radiation, the BSU press service reported
“The project corresponds to world analogues and is able to replace expensive imported goods for domestic production,” the BSU press service informed.
The university noted that today radio-absorbing coatings are actively used in specially equipped rooms, such as anechoic chambers and measuring platforms. These rooms are designed for testing various electronic equipment: from the simplest gadgets, radars, and antennas to electric buses and airplanes. All these devices must be checked for electromagnetic compatibility before being put on sale or used in production. All surfaces of such rooms, including walls, floors, and ceilings, are covered with a cone-shaped material capable of absorbing radio waves – electromagnetic vibrations propagating through space at the speed of light. Such radiation has a negative impact on technical systems, causes failures and interference in the operation of equipment, disables devices, provokes distortion, deletion or leakage of information on digital media, etc. For this reason, excessive electromagnetic radiation must be eliminated for successful testing.
“This is the task of radio-absorbing coatings. They ‘absorb’ electromagnetic energy and convert it into thermal energy. To achieve this effect, it is necessary to ensure the electrical conductivity of the products. For these purposes, BSU scientists use carbon materials as part of the product, including nanomaterials, which allows producing coatings that are more resistant to mechanical effects. And their specific shape in the form of cones or pyramids ensures the absorption of radio waves in a wide range of frequencies and angles of incidence,” the BSU press service added.
Now, the developed coatings have already been introduced into production at the level of custom batches of various volumes. In the future, it is planned to improve the technology of mass production to reduce its cost.
The scientific project is being worked on by the teams of the Laboratory of Applied Electrodynamics and Elioniсs of the A. N. Sevchenko Institute of Applied Physical Problems of Belarusian State University, and the Laboratory of Radiophysics and Information Technology of the Faculty of Radiophysics and Computer Technology. The Head of the Laboratory of Applied Electrodynamics of the A. N. Sevchenko Institute of Applied Physical Problems of Belarusian State University, Valery Knysh, is leading the development.
