Using a heat-resistant device, made of tungsten and alumina layers, researchers have found that the device can absorb the sun's broad spectrum radiation and convert it to electricity. The photovoltaic ...

Traditional solar cells harvest only a narrow sliver of the electromagnetic energy pouring down onto Earth, and that's one of the reasons it's been so challenging to get solar efficiency beyond 20-30 ...

Imagine, right now, as you read these words, you're immersed in an unseen ocean of energy. Waves are zipping through your body, bouncing off walls, and ...

Researchers have demonstrated the first planar lens that works with high efficiency within the visible spectrum of light -- covering the whole range of colors from red to blue. The lens can resolve ...

Every star you see at night broadcasts its temperature through color, yet one shade sits permanently off the menu. The visible spectrum runs from deep red through orange, yellow, white, and blue, each ...

One of the persistent mysteries about our Universe is the extreme imbalance between matter and antimatter. Antimatter and matter were both generated during the Big Bang, but the Universe is now ...

Primary performance data for passive fiber-optic devices is provided by spectral measurement of optical insertion loss (IL) and polarization-dependent loss (PDL). Often used to characterize optical ...