Issue Date: August 3, 2009
Gold-Coated Quantum Dots
Scientists have devised a way to make gold-coated quantum dots that retain the desirable optical properties of both the gold and the nanocrystal. Such gold-coated quantum dots will allow researchers to perform both fluorescence and plasmonic imaging with a single tag. But making them is harder than it sounds because gold can snuff out the quantum dot's fluorescence. Xiaohu Gao and Yongdong Jin of the University of Washington, Seattle, overcame that barrier by . . .
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