Reshaping the solar spectrum to turn light to electricity

When it comes to installing solar cells, labor cost and the cost of the land to house them constitute the bulk of the expense. The solar cells—made often of silicon or cadmium telluride—rarely cost more than 20 percent ...

Creating bright X-ray pulses in the laser lab

To create X-rays—short wave radiation—scientists at TU Vienna start out with very long wavelengths—infrared laser. Long wavelength laser pulses rip atoms out of metal and accelerate them, which leads to emission of ...

Chemists settle debate about conversion of light

Chemists of Utrecht University and of the Foundation for Fundamental Research on Matter (FOM) have settled the debate about a fundamental question that is relevant to the conversion of one colour into another. They demonstrated ...

Physicists break color barrier for sending, receiving photons

University of Oregon scientists have invented a method to change the color of single photons in a fiber optic cable. The laser-tweaked feat could be a quantum step forward for transferring and receiving high volumes of secured ...

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