Researchers in the Vienna Technical University and Utrecht University in the Netherlands found out that it is possible to specifically modify light waves, making for them a transparent almost any scattering environment. At the same time, the rays are practically not changed by matter through which they pass, but only weakened. This is reported in the article published in the magazine Nature Photoics.
Scientists have developed mathematical approaches to describe the light modes invariant to diffusion. In practical experiments, a zinc oxide layer was used as a light scattering medium – an opaque white powder consisting of randomly oriented particles. At first, scientists analyzed the Wednesday, passing light signals through it, recorded by the detector. Thus, it is possible to determine how any other light wave will change, and which one should be this wave, so that there is no dispersion in the layer.
Researchers managed to detect invariant fashion, which, permeating a layer of zinc oxide, create exactly the same wave picture on detectors as if they passed through the air.
According to scientists, the results show that within certain limits you can choose, which properties should have a light signal to send it without interference through any environment that otherwise would be opaque. So, researchers managed to obtain an image of asterism (parts of the constellation) of a large bucket on a detector through a layer of zinc oxide. Such technology is also useful for studying biological objects, such as cells and tissues.