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Shape control of inorganic nanocrystals is important for understanding basic size- and
shape-dependent scaling laws and is useful in a wide range of applications. With minor
modifications in the chemical environment, it is possible to control the reaction and diffusion
processes at room temperature, opening up a synthetic route for the production of polymetallic
hollow nanoparticles with very different morphology and composition, obtained by the
simultaneous or sequential action of galvanic replacement and the Kirkendall effect.
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