Search results for metasurface

Optics & Photonics Nov 11, 2019

Smart metamaterials that sense and reprogram themselves

Materials scientists aim to engineer intelligence into the fabric of materials or metamaterials for programmable functions. Engineering efforts can vary from passive to active forms to develop programmable metasurfaces using ...

Optics & Photonics Nov 25, 2019

Light-trapping nanocubes drive inexpensive multispectral camera

Researchers at Duke University have demonstrated photodetectors that could span an unprecedented range of light frequencies by using on-chip spectral filters created by tailored electromagnetic materials. The combination ...

General Physics Nov 12, 2019

Sound-redirecting prototype could fool eavesdroppers

Tuning the instruments that produce some of our most indelible sound waves—guitars, pianos, vocal chords—has become commonplace, expected, easy.

Optics & Photonics Oct 14, 2019

3-D integrated metasurfaces stacking up for impressive holography

Physicists and materials scientists have developed a compact optical device containing vertically stacked metasurfaces that can generate microscopic text and full-color holograms for encrypted data storage and color displays. ...

Optics & Photonics Oct 30, 2019

Dielectric metasurfaces for next-generation holograms

Metasurfaces are optically thin metamaterials that can control the wavefront of light completely, although they are primarily used to control the phase of light. In a new report, Adam C. Overvig and colleagues in the departments ...

Optics & Photonics Nov 06, 2019

Intelligent metasurface imager and recognizer

The Internet of Things (IoT) and cyber physical systems have opened up possibilities for smart cities and smart homes, and are changing the way for people to live. In this smart era, it is increasingly demanded to remotely ...

Optics & Photonics Sep 12, 2019

Metasurface holograms: Fast, compact polarization measurements for spectroscopy and sensing

For the first time, researchers have used ultra-thin layers of 2-D structures known as metasurfaces to create holograms that can measure the polarization of light. The new metasurface holograms could be used to create very ...

Optics & Photonics Oct 04, 2019

New metasurface design can control optical fields in three dimensions

A team led by scientists at the University of Washington has designed and tested a 3-D-printed metamaterial that can manipulate light with nanoscale precision. As they report in a paper published Oct. 4 in the journal Science ...

Nanophysics Nov 07, 2019

Mathematics at the speed of light

AMOLF researchers and their collaborators from the Advanced Science Research Center (ASRC/CUNY) in New York have created a nanostructured surface capable of performing on-the-fly mathematical operations on an input image. ...

Optics & Photonics Sep 26, 2019

Research team develops new way to make integrated photonics

The signals from a lighthouse to ships at sea is an early example of optical communication, the use of light to transmit information. Today, researchers in the field of integrated photonics are using optical communications ...

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