Semiconducting nanocrystals emit light in many different colours, but they blink on and off at random. The latest nanocrystals emit photons steadily, thanks to the blending of their cores into their outer shells.
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Ha, T. How nanocrystals lost their blink. Nature 459, 649–650 (2009). https://doi.org/10.1038/459649a
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DOI: https://doi.org/10.1038/459649a
