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Stress Activates Light-Emitting Nanowires

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Stretching and compressing gallium arsenide nanowires switches their light emission on and off, respectively. Enabled by the material’s hexagonal wurtzite structure, this discovery could enable novel devices that function as LEDs or light detectors, depending on whether they are compressed or stretched, according to investigators at IBM Research in Zurich. Current technologies use different materials to realize these two distinct functions: silicon or germanium for light detection and III-V semiconductors for light emission. “We have now discovered that when you pull...Read full article

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    Published: April 2014
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    ConsumerenergyEuropegallium arsenidegrapheneIBMindustrialLight SourcesMaterialsmolecular beam epitaxynanonanowiresNorwegian University of Science and TechnologyOpticsResearch & Technologysolar powerTech PulseTrondheimHelge WemanwurtziteLEDs

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