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Science  26 Apr 2002:
Vol. 296, Issue 5568, pp. 623
DOI: 10.1126/science.296.5568.623c

Before long, we may be able to turn off those humming, flickering fluorescent tubes and sizzling incandescent bulbs for good. Their possible successors—cool, durable, efficient light-emitting diodes, the descendants of the blinking indicator lights on toys and other electronic gizmos—are already showing up in traffic signals, cars, and other places. The devices typically produce light when electrons hop from one layer to another in a semiconductor.

Get enlightened about the promise and hurdles of this emerging technology at Solid-State Lighting. The new site from Sandia National Lab in Albuquerque, New Mexico, offers background articles, news updates, links to journals, and a roster of government labs pursuing LED lighting research. A patent database is in the works

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