We are surrounded by electromagnetic radiation and natural and artificial magnetic fields. Even brief electromagnetic pulses are sufficient to render any device inoperable.
Aleksey Trukhanov is a senior researcher at the SUSU Nanotechnology Research and Education Center. He is working on electrolytic films that can neutralize radiated electromagnetic and magnetic shielding.
Development of electromagnetic and magnetic shielding
Alexei Trukhanov is the winner of the 2014 Young Scientist Award for Nano and Microstructures by the Alferov Foundation and the National Academy of Sciences of Belarus. Production technology, diagnostics, and new applications are exactly what he conducted under research 5-100 (SUSU postdoctoral competition), which was conducted at the Nanotechnology Research and Education Center of the SUSU Institute of Natural Science and Mathematics, and with the crystal growth laboratory Heads Dennis and Winnick cooperate.
Aleksey Trukhanov said: "At present, the electromagnetic compatibility of equipment is a very hot topic. One of the most popular methods of equipment protection in the world is shielding-manufacturing electromagnetic and magnetic shielding. But each developer has his own design method And confidential, and not sharing their thoughts. The cost of a product without a protective cover may be ten times or more. "
In general, heavy elements used as shielding materials can effectively absorb high-energy radiation. Bismuth is a heavy metal with a high density and a large number of shell electrons. It is similar to lead and other materials and is widely used. However, in the ratio of conservation efficiency to quality parameters (and ecological considerations), bismuth is the best choice and the best choice.
Conclusions published in top-rated journals
The research results of this article were published in the "Alloys and Compounds" magazine, and the paper name was "Related Synthesis Conditions and Microstructures of Bi-based Electronic Coating Products". Article "Key influences of electrochemical deposition systems and organic additives on the structure of bismuth films".
The picture shows a bismuth coating obtained from a perchlorate electrolyte with thicknesses of 100 μm (a), 300 μm (b), and 600 μm (c).
Alexey Trukhanov explained: "Both articles have studied the effects of production process schemes and initial electrolyte components on the microstructure and functional characteristics of bismuth films. In other words, this article gives the answer to the question, that is, in electrochemical Changing different methods during the deposition process can produce materials with the same composition but different properties. It is well known that any material scientist knows this relationship: composition-structure-performance. Generally, the performance of a material depends not only on the chemical composition of the sample, but also on To its structure. "
Research on the production of electrolytic thin film micro devices
Whether from a basic science perspective or an application perspective, electrolytic thin films are a unique material. Studying the film formation process, growth mechanism, and the interrelationship between structure and performance will help to have a deeper understanding of film technology in basic materials science.
However, a major trend in practical materials science in recent decades has been miniaturization of various devices. In this case, different films and coatings are preset and their properties are controllable.
"We are studying the characteristics of the crystal structure and microstructure (porosity, density, average particle size) of synthetic samples. However, it is important to know that the development of science today is affected by two major trends: cross-domain cooperation (from various The joint work of scientists in the scientific field) and international cooperation (collaboration with colleagues at home and abroad). We are actively cooperating with colleagues in the headquarters of the Material Science Production Center (Mins) of the National Academy of Sciences of Belarus
At present, the process for preparing bismuth membranes using composite electrolytes has been optimized, and the phase composition and microstructure of bismuth membranes have been complicatedly studied. The results show that the higher the density of the membrane (the finest grain structure caused by adding certain organic additives to the electrolyte), the more likely it is to be applied to practical applications.
We still have a lot of work to do, because the preliminary results are obtained in laboratory conditions. If it is to be used in practical applications, more work must be done to ensure yield and mass production. Although it is too early to talk about practical applications, the huge potential and practical direction of the film is very clear.