Toronto team reports brighter chemical-sensing nanoparticles
Image: Primary University of Toronto engineers reported dye-sensitized nanoparticles that use near-infrared light to emit a brighter optical signal for chemical sensing. The team said its layered lithium-lutetium-fluoride design produced particles about 150 times brighter than non-dye-sensitized upconversion nanoparticles and about 50 times brighter than some optimized conventional structures. The particles could help distinguish structural isomers and detect trace chemicals, but the work remains proof of concept and requires a scalable manufacturing method.
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