Shape change and color gamut in gold nanorods, dumbbells, and dog bones

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Journal Article
Advanced Functional Materials, 2006, 16 (16), pp. 2170 - 2176
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It is shown here that deviations from a prolate ellipsoidal shape have a significant effect on the optical properties of gold nano-rods. Transitions from rods to 'dumbbell'- or 'phi'-shaped particles lead to a shift in the longitudinal plasmon peak in the blue and red directions, respectively. Development of 'dog-bone' shapes leads to a red-shift and to the development of a third peak. A broad and flexible color gamut can be obtained. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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