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(Color online) Typical top view (left column) and cross-sectional view (right column) SEM images of SiCu composite nanorods with different Si/Cu composition: (a) Si 100%, Cu 0%; (b) Si ∼ 50%, Cu ∼ 50%; (c) Si ∼ 25%, Cu ∼ 75%; and (d) Si 0%, Cu 100%.
(Color online) The nanorod tilting angle β versus the Cu concentration C Cu for fixed deposition angle θ = 88°. The dashed red curve is the fitting using a third-degree polynomial while the solid blue curve is the result from the statistical model.
(Color online) The atomic configurations of Si and Cu atoms in adjacent two layers, the corresponding tilting angles and their probabilities related to Si and Cu’s compositions. Here A and B atoms represent Si and Cu atoms, and c A and c B are their corresponding compositions.
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