Physicists from NUST MISIS, together with colleagues from the Polytechnic University of Turin (Italy) and STC UP RAS, have developed a technology that makes various elongated objects invisible, such as antennas and various sensors, aircraft landing gear, ship masts and airport towers. The invention is based on an innovative metamaterial that suppresses the scattering of an object's electrical type.
Any elongated metal object, for example, antennas or cell towers, including 5G, have a response - a signal that appears in response to an impact - of an electrical type. To hide such an object from radar, it is necessary that it began to scatter light, like an object with a magnetic response, which itself is very weak. Scientists of the Russian-Italian scientific collaboration managed to do this within the framework of the ANASTASIA project (Advanced Non-radiating Architectures Scattering Tenuously And Sustaining Invisible Anapoles ), named after the Grand Duchess of the Russian Empire Anastasia Romanova.
Scientific team of the ANASTASIA project
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Alexey Basharin
The first of the possible applications of the new coating will be STELS technologies for military and civil purposes - in order to hide various elongated objects, such as aircraft landing gear, antennas and various sensors, ship masts and airport towers. If the task of hiding these objects from enemy radars is trivial, the developers emphasize, then the task of electromagnetic compatibility of antennas on satellites is very important, so that some antennas do not affect each other. And this will only be possible if they are invisible.
The method will help to hide the buildings of airports, operator towers, so that they do not interfere with radars and communications with pilots. In addition, the development will find application in the so-called "Magnetic light" tasks, i.e. where it is necessary to amplify various magnetic phenomena: in nano-antennas, nano-lasers, etc.
“The second idea put forward in this work is that we were able to develop a coating that makes the impedance of the cylinder equal to the impedance of the surrounding space through a special shape of the sinusoidal metamaterial. This, in turn, gives an effect in which an electromagnetic wave incident on a similar object does not notice the cylinder at all and passes through it unhindered. An important progress in our work is the fact that we have applied a flat coating, rather than bulky heavy structures, ”added Alexey Basharin.
Sample Metamaterial
The scientific research of the team is a theoretical work and demonstrates new methods and discovered effects. The next stage of the project and the immediate goal, according to the developers, is to learn how to reduce the magnetic response of elongated metal structures.
“We have already deduced the necessary theory for supertoroidal configurations earlier, now it remains to show it experimentally. Thus, we will come closer to solving the problem of complete invisibility. Although it is impossible to create perfect invisibility, according to the optical theorem, it is within our power to make a big step towards this, ”Basharin concluded.
The result of the work was published in the international scientific journal Scientific Report.