Electrons surfing on a laser beam

11.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

The Large Hadron Collider at CERN in Switzerland, the largest accelerator in the world, has a circumference of around 26 kilometres. Researchers at Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Germany, are attempting to go to the other extreme by building the world's smallest accelerator—one that fits on a microchip. The research team has now taken another step towards achieving this ambition.

Asymmetric sound absorption lets in the light

06.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

If you've ever lived in an apartment building or stayed in a hotel room, you are probably familiar with the inconvenience of inadequate sound absorption. Acoustic absorption refers to the absorption of sound energy by a material. Whether it's to improve acoustics or to prevent noisy neighbors, sound absorption has multiple applications in engineering and architecture, which can be improved by asymmetric acoustics.

Asymmetric sound absorption lets in the light

06.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

If you've ever lived in an apartment building or stayed in a hotel room, you are probably familiar with the inconvenience of inadequate sound absorption. Acoustic absorption refers to the absorption of sound energy by a material. Whether it's to improve acoustics or to prevent noisy neighbors, sound absorption has multiple applications in engineering and architecture, which can be improved by asymmetric acoustics.