Researchers at Duke University and Aalto University (Finland) have constructed a "meta-mirror" device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking ...
Optics & Photonics
Feb 18, 2019
0
188
Optical circuits are set to revolutionize the performance of many devices. Not only are they 10 to 100 times faster than electronic circuits, but they also consume a lot less power. Within these circuits, light waves are ...
Nanophysics
Feb 12, 2019
1
72
The rainbow is not just colors—each color of light has its own frequency. The more frequencies you have, the higher the bandwidth for transmitting information.
Optics & Photonics
Aug 16, 2018
0
112
An international team of researchers showed how a nonlinear elastic metasurface could convert a wave's fundamental frequency to its second harmonic. Structural factors in metasurfaces, like the spatial arrangement of its ...
Optics & Photonics
Apr 3, 2018
0
18
Researchers from CIC nanoGUNE (San Sebastian, Spain) and collaborators have reported in Science the development of a so-called hyperbolic metasurface on which light propagates with completely reshaped wafefronts. This scientific ...
Optics & Photonics
Feb 23, 2018
5
1391
Producing the perfect color images we need and love often requires multiple, heavy lenses so that each color focuses in exactly the same plane. Now Penn State engineers have developed a new theory that solves the problem ...
Optics & Photonics
Feb 9, 2018
0
281
A butterfly's wings and a peacock's feathers use nanoscale architecture to bend light and produce brilliant colors without pigments or dyes, and scientists have been trying to emulate nature's design.
Optics & Photonics
Aug 31, 2017
1
211
Scientists have created new 2-D nanostructured surfaces which appear as realistic 3-D objects – including shading and shadows - using cutting edge nano-engineering.
Nanophysics
Jul 6, 2017
2
353
Not far from where Edwin Land—the inventor of the Polaroid camera—made his pioneering discoveries about polarized light, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) are ...
Optics & Photonics
Apr 4, 2017
0
27
Scientists have advanced metasurface technology by developing a new design that simultaneously projects holographic images and creates special diffraction patterns with ten-fold rotation symmetry of quasicrystal. This ultra-thin ...
Optics & Photonics
Jun 14, 2024
0
1
