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+ - SPAM: Toward opal-based billboards?

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Roland Piquepaille
Roland Piquepaille writes "Nature News reports that British and Canadian chemists have developed synthetic opals that can very quickly switch between various colors when a few volts of electricity are applied to them. The developers, who said they're ready to sell the technology today, added that their 'photonic ink' (P-Ink) material could soon be used in electronic books or advertising displays. These modified opals could also be used to build the next generation of flexible solar cells. Read more for additional details and pictures showing how works the P-Ink opal-based technology."
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Toward opal-based billboards?

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