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Holographic display for mobile devices

26.04.2015

Scientists from the Swinburne University of Technology in Melbourne, with the support of scientific foundations from Australia and China, have developed a technology that allows displaying holograms on the screen of a mobile device. To see such images, additional devices such as stereo glasses are not required.

The technology is based on the holographic method developed by the Hungarian physicist Dennis Gabor, who received the Nobel Prize in 1971 for his invention. The method consists in recording and displaying not only the amplitude of light waves reflected from objects (as in photography), but also the phases of these waves using a laser.

To reproduce this method in a mobile display, the researchers proposed using a promising material in the semiconductor industry called graphene. As scientists have found, this material is able to refract the light passing through it at various angles and recreate the recorded three-dimensional image with a viewing angle of up to 52 degrees.

"If you can refract light, you can create a lot of optical effects," said Ming Gu, director of the Center for Photonics Research at Swinburne University of Technology. smartphones and tablets with a wide viewing angle.

The new technology, according to the researchers, could also find applications in the military industry, medical diagnostics, distance education and the entertainment industry.

The creation of holographic images that do not require special devices for their viewing is being done by many researchers around the world. So, in the summer of 2014, a system for displaying images hanging in the air, like holograms in Star Wars, was presented by designers from Scotland.

The principle of operation of the system of Scottish designers and researchers from Australia is different. The installation of Scottish designers does not use the holographic principle. In addition, the installation itself is large and it is impossible to fit it into a mobile device. Researchers from Australia claim that a “graphene screen” can be equipped with a device of almost any size, up to “smart watches”. You can also find works on the creation of liquid crystal phase modulators for displaying three-dimensional images in mobile devices, but they allow you to view the image only within a few angles.

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