"Beams of invisibility" from Austria will make the opaque material transparent

A team of Austrian, American and Greek scientists is preparing to conduct an experiment on the implementation of "induced transparency" technology. In the future, it can become the basis of active camouflage - when irradiated in a special way, an opaque material ceases to be an obstacle to light rays. That is, it becomes, as it were, transparent, without changing in essence.

The task of creating an invisibility cloak always has one simple condition - you need to make sure that the light falling on the object stops reflecting from it. If the object ceases to interfere with the light, then from the outside it will look like transparent, and therefore invisible. To do this, they try to direct the light "bypassing", generate a copy of the radiation, redirecting it from one side of the invisible object to the other, etc. The Austrians offered to "disable" the reflection effect.

Material with random surface irregularities reflects incident light in all directions

The idea came from the field of lasers - they require optically active materials that allow manipulation of light beams and pumping of the laser, avoiding energy absorption. Developing the concept, the Viennese scientists have designed a type of radiation that ideally matches the irregularities of the scattering surface of the material. And if you illuminate it, the same "shutdown" of scattering will happen, so if at the same moment you apply another ray of light to the material, from the side, it will pass through it without the slightest deviation.

Material irradiated with a specially selected wave pattern appears transparent to the wave coming from the left

The mathematical description of this phenomenon is much more complicated than the verbal one - now scientists are working on a unified algorithm for calculating the parameters of the beam, regardless of what kind of scattering medium we are talking about. At first, it is proposed to use sound waves instead of light; virtual modeling has already shown the consistency of this idea. There is only one little thing left - to prove or disprove the concept of "rays of invisibility" experimentally.