Precious metal core-shell spindles

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Journal Article
Journal of Physical Chemistry C, 2007, 111 (49), pp. 18135 - 18142
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A simplified method to produce spindle-shaped particles with a hematite core and a silica shell is described. The silica shell can, in turn, serve as the substrate for an outer coating of Ag or Au nanoparticles. The resulting multilayer core-shell particles display a flexible optical extinction spectrum, due primarily to the sensitivity of their plasmon resonance to the morphology of the precious metal outer coating. © 2007 American Chemical Society.
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