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This illustration shows what happens in nitride-based LEDs. At left, an electron (negative) and electron hole (positive) recombine and release light (left). In Auger recombination (right) the electron and hole combine with a third carrier, releasing no photon in the process. In this case, the energy loss is also assisted by indirect processes, vibrations in the crystal lattice shown as squiggles.

Peering into a Quantum Well

Supercomputer simulation illuminates mysterious "droop" in solid-state lighting.

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A water droplet, a water molecule and an arrow

Beating Nature at her Own Game?

New catalyst speeds conversion of electricity to hydrogen fuel.

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Scientist Katherine Ament

Ament Part of the Next Generation of Rare-Earth Researchers

DOE Pulse profiles Ames Lab researcher, Katherine Ament.

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Lawrence Berkeley National Laboratory

Lawrence Berkeley National Laboratory

Innovation in action: science and the city.

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Dave Mosher and Kendra Snyder video still

Two Nerds . . . One Love . . . and A Great Golden Ring

Couple brought together by physics...and chemistry.

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A water droplet, a water molecule and an arrow

Catalyst that Makes Hydrogen Gas Breaks Speed Record

Material designed for energy applications is 10 times faster than natural enzyme, uses inexpensive metals.

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Micro-robots called asters because they look like the flower

Tiny Terminators

New micro-robots assemble, repair themselves and are surprisingly strong.

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The semiconductor industry relies on accelerator technology to implant ions in silicon chips.

Great friendships and great discoveries

The U.S. and India sign a forward-looking framework.

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Fermi National Accelerator Laboratory

Fermi National Accelerator Laboratory

The frontiers at Fermi National Accelerator Laboratory: Physics in action.

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Scientists in the lab

Researchers Devise New Stress Test for Irradiated Materials

Lawrence Berkeley's discovery may increase safety . . . and even reduce stress.

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Showing how a new anti-cancer drug prevents a mutated enzyme from promoting the growth of tumors.

Light Sources Help Discover New Drug Against Melanoma

Deadly skin cancer faces a powerful new challenger thanks to Office of Science labs.

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Scientists use the near detector to verify the intensity and purity of the muon neutrino beam leaving the Fermilab site

A Blink Can Change Everything

Fermi scientists show the split-second decisions of tiny particles add up to a huge difference.

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