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TECH SPACE
Scientists create hologram that changes images as it is stretched
by Brooks Hays
Washington DC (UPI) May 10, 2017


Researchers at the University of Pennsylvania have created a hologram that switches between images as it is stretched. The hologram was made using ultra-thin nanostructured surfaces called metasurfaces.

A team of material scientists led by Ritesh Agarwal created the metasurfaces by embedding gold nanorods in polydimethylsiloxane, a stretchable film.

The researchers used computer models to calculate how the holographic pattern would change as the film was stretched. They used the models' data to design holograms able to shift between two or three images.

Researchers described their novel technology in the journal Nano Letters.

"Upon stretching, these devices can switch the displayed holographic image between multiple distinct images," scientists wrote in the paper. "This work opens up the possibilities for stretchable metasurface holograms as flat devices for dynamically reconfigurable optical communication and display."

TECH SPACE
3-D printers open new design space for wireless devices
Durham NC (SPX) May 10, 2017
Researchers at Duke University have 3-D printed potent electromagnetic metamaterials, using an electrically conductive material compatible with a standard 3-D printer. The demonstration could revolutionize the rapid design and prototyping of radio frequency applications such as Bluetooth, Wi-Fi, wireless sensing and communications devices. Metamaterials are synthetic materials compos ... read more

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