Since the 1960s, theatergoers have shelled out for crude 3-D glasses, polarized glasses, and shutter glasses to enhance their viewing experience. These basic devices, used to trick the brain into perceiving an artificial three-dimensional reality, may soon be rendered obsolete with the introduction of new holography technology developed by Tel Aviv University researchers.
TAU doctoral students Yuval Yifat, Michal Eitan, and Zeev Iluz have developed highly efficient holography based on nanoantennas that could be used for security as well as medical and recreational purposes. Prof. Yael Hanein, of TAU's School of Electrical Engineering and head of TAU's Center for Nanoscience and Nanotechnology, and Prof. Jacob Scheuer and Prof. Amir Boag of the School of Electrical Engineering, led the development team. Their research, published in the American Chemical Society's publication Nano Letters, uses the parameters of light itself to create dynamic and complex holographic images.
In order to effect a three-dimensional projection using existing technology, two-dimensional images must be "replotted" rotated and expanded to achieve three-dimension-like vision. But the team's nanoantenna technology permits newly designed holograms to replicate the appearance of depth without being replotted. The applications for the technology are vast and diverse, according to the researchers, who have already been approached by commercial entities interested in the technology.
Taking out the map
"We had this interesting idea to play with the parameters of light, the phase of light," said Mr. Yifat. "If we could dynamically change the relation between light waves, we could create something that projected dynamically like holographic television, for example. The applications for this are endless. If you take light and shine it on a specially engineered nanostructure, you can project it in any direction you want and in any form that you w
|Contact: George Hunka|
American Friends of Tel Aviv University