Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 111, Issue 35, Pages 12886-12889Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp075230f
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Using in situ transmission electron microscopy, we find that a carbon shell governs the morphological transitions of gold and silver nanorods upon heating. Encapsulated Ag nanorods show a surprising nonuniform sublimation behavior starting from one side and leaving behind the shell. Uncovered gold nanorods transform their shape to spheres well below the bulk melting temperature through surface diffusion, which is prevented by a thin carbon shell.
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