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Gold Nanoparticles Boost QD Glow

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GAITERSBURG, Md., Feb. 5, 2013 — A DNA template that controls the distance between gold nanoparticles and quantum dots can predictably increase or decrease the intensity of a quantum dot’s fluorescence. The breakthrough could lead to the use of quantum dots as a component in better chemical sensors, photodetectors and nanoscale lasers. Those who have tried to tune a radio know that moving their hands toward or away from the antenna can improve or ruin the reception, but that controlling this strange effect is difficult. Similarly, nanotechnology researchers have been frustrated trying to control the light emitted...Read full article

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