News tagged with light wavelength

Sun-free photovoltaics

A new photovoltaic energy-conversion system developed at MIT can be powered solely by heat, generating electricity with no sunlight at all. While the principle involved is not new, a novel way of engineering ...

Jul 29, 2011
4.9 / 5 (11) 6 | with audio podcast

Shedding light on Anderson localization

Waves do not spread in a disordered medium if there is less than one wavelength between two defects. Physicists from the universities of Zurich and Constance have now proved Nobel Prize winner Philip W. Anderson's ...

Dec 20, 2012
5 / 5 (2) 2 | with audio podcast

Shedding light on a photosensitive protein

Even without eyes, many single-celled organisms can perceive and react to light. This is achieved via rhodopsins, proteins at the cell surface that trigger responses to specific wavelengths of light by directing ...

Nov 04, 2011
not rated yet 2 | with audio podcast

Organic photodiodes for sensor applications

Powerful, inexpensive and even flexible when they need to be, organic photodiodes are a promising alternative to silicon-based photodetectors. They are used to improve light sensitivity in cameras and to ...

May 14, 2014
5 / 5 (2) 1