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Tip-enhanced Upconversion of Er3+/Yb3+:NaYF4 Nanoparticles

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We demonstrated tip-enhanced upconversion luminescence from a single Er3+/Yb3+:NaYF4 nanoparticle due to plasmonic effect. The gold-coated tip enabled improved reception and transmission of incident electromagnetic fields, which increased both absorption and emission processes.

© 2015 Optical Society of America

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