Researchers group at the Massachusetts Institute of Technology (MIT) Cambridge, led by Pro. Marin Soljačić and John Joannopoulos, announced the development of a new and visual type of transparent display, which soon enable the development of advanced head-up displays (HUD).

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The new capability is obtained by embedding nano particles in a transparent polymer, or plastic. These particles are better suited at reflecting light hitting them at certain fixed wavelengths, meaning that they can, assume for example, be made to reflect the color blue, as seen above. All other uses of wavelengths would pass through the display unhindered, without reflecting off the other nano particles. The team admits that the system is very simple at this point, and in its earliest stages, they says that early results are very encouraging, and adds that further development could lead to transparent displays capable of using more colors without detracting from what you can see through them.

"This is a very clever idea using the spectrally selective scattering properties of nano particles to create a transparent display. I think it is a beautiful demonstration," comments Stanford University professor of electrical engineering Shanhui Fan, who was not involved with this research.

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