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Labeling Tumors With Quantum Dots


Atomic energy levels, Energy of emitted light, Relationship between photon energy and color

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Quantum dots are tiny semiconductor crystals with vivid colors that can be used as visual labels in biology and medicine. Quantum dots excited by UV radiation emit light with an energy and color that is determined by the size of the quantum dot. Darcy describes how the characteristics of atomic energy levels relate to the color of quantum dots, and how quantum dots may someday be used as markers in surgical procedures.

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