Experiment shows that it is possible to see through opaque objects

It has been published in the latest issue of Physical Review Letters a new experiment of the researchers from the Institution of Higher Education in Physics and Chemistry of the city of Paris in which they have shown that it is possible focus light through opaque materials and identify objects behind, knowing well the material we want to drill. These materials are usually paper, paint or biological fabrics (all of them opaque), where light passing through them is scattered into complex random shapes.


The scientists light passed through a layer of zinc oxide. They studied the way the lightning changed as it passed through this area and produced a model called number transmission matrix (model includes over 65,000 numbers describing how the oxide layer reacts to the passage of light)

The array can be used to adapt a specific beam of light pass it through the oxide and manage to concentrate it on the other side. At the same time, the light that differs from the opaque compound could also be measured and the array used to focus an image behind the material.

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What this experiment shows is that an opaque material could serve as a high quality optical element comparable to a normal lensonly when we have one detailed transmission matrix of the opaque material.

In addition to being able to look beyond objects such as paper, paint, this new technique could be applied to opaque materials that would function as good optical elements in nano devices where the construction of transparent lenses is too complicated.



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