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Advanced Materials

Tailored Synthesis of Superparamagnetic Gold Nanoshells with Tunable Optical Properties

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Abstract

Multifunctional Au nanoshells with tunable optical properties and fast magnetic response have been fabricated through a sequence of sol–gel, surface-protected etching, and seed-mediated growth processes. The use of a porous silica layer enhances the uniformity of nanoshell growth, the reproducibility of the synthesis, and the structural and optical stability of the products.

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