Researchers at MIT have come up with a new approach on Transparent displays, that can have significant advantages over existing systems like a wide viewing angle, simplicity of manufacture and potentially low cost and scalability. Watch the video…
The Transparent displays have a variety of potential applications — such as the ability to see navigation or dashboard information while looking through the windshield of a car or plane, or to project video onto a window or a pair of eyeglasses. A number of technologies have been developed for such displays, but all have limitations.
The innovative system is described in a paper published this week in the journal Nature Communications, co-authored by MIT professors Marin Soljačić and John Joannopoulos, graduate student Chia Wei Hsu, and four others.
“The glass will look almost perfectly transparent,” Soljačić says, “because most light is not of that precise wavelength” that the nanoparticles are designed to scatter. That scattering allows the projected image to be seen in much the same way that smoke in the air can reveal the presence of a laser beam passing through it.
“This is a very clever idea using the spectrally selective scattering properties of nanoparticles to create a transparent display,” says Shanhui Fan, a professor of electrical engineering at Stanford University who was not involved in this work. “I think it is a beautiful demonstration.”