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In work that could improve solar cells and LEDs, researchers have, for the first time, made practical working devices out of three-dimensional photonic crystals.
The device could one day let superfast quantum computers talk to each other.
Scanning prints at two meters could mean safer security checks.
The new approach wastes far less light, saving energy.
A nanoscale version of a TV antenna directs light.
Fibers that carry light and sense pressure could be used for medical imaging and structural monitoring.
Inexpensive, lightweight device provides basic medical diagnostics and images.
Researchers are studying whether viewing 3D causes eyestrain.
Cells absorb sunlight concentrated 1,000 times without cooling.
Dye-sensitized cells get a double boost from nanowires and optical fiber.