By Belle Dumé -
Researchers in the US say they have succeeded in tuning the wavelength of light emitted by a tiny laser made from plasmonic nanocavity arrays. The plasmon laser, which consists of arrays of gold nanoparticles surrounded by dye molecules dispersed in a liquid, is robust and can operate at room temperature. An important use for the new device could be detecting cancer biomarkers at very low concentrations, say the scientists.
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Ref: Real-time tunable lasing from plasmonic nanocavity arrays. Nature Communications (2015) | DOI:10.1038/ncomms7939