“Rays of invisibility” from Austria will make the opaque material transparent

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

The task of creating an invisible cloak always has one simple condition-you need to make sure that the light entering the object ceases to reflect from it. If the object ceases to be an obstacle for light, then from the side it will look like transparent, and therefore invisible. To do this, they try to direct the light “bypass”, generate a copy of the radiation, redirecting it on the one side of the invisible object to the other.D. The Austrians proposed to “disable” the effect of reflection.

InvisibilityMaterial with random heterogeneities of the surface reflects the falling rays of light in all directions

The idea came from the field of work with lasers – there are optically active materials that allow manipulating light rays and pumping the laser, avoiding energy absorption. By developing the concept, Viennese scientists designed a type of radiation that ideally corresponds to the irregularities of the scattering surface of the material. And if you illuminate it, the same “disconnecting” of dispersion will occur, so if at the same moment to submit another ray of light on the material, it will pass through it without the slightest deviations.

InvisibilityThe material irradiated by a specially selected wave pattern, for the waves going on the left, looks transparent

The mathematical description of this phenomenon is much more complicated than the verbal – now scientists are working on a single algorithm for calculating the beam parameters, regardless of which the scattering environment is being discussed. Instead of light at first, it is proposed to use sound waves, virtual modeling has already shown the viability of this idea. The smallest is left – to prove or refute the concept of “rays of invisibility” experimentally.

Source &#8212 Tu Wien

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