An artist’s rendering shows the layers of a new, onion-like nanoparticle whose specially crafted layers enable it to efficiently convert invisible near-infrared light to higher energy blue and UV light. Credit: Kaiheng Wei (Davidwei_loga@foxmail.com)
A dye-coated surface is 1 of 3 specially crafted layers that help the particle emit light ideal for bioimaging, solar energy harvesting and light-based security techniques. The particle’s innovation lies in its layers: a coating of organic dye, a neodymium-containing shell, and a core that incorporates ytterbium and thulium...
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