grain boundary
grain boundary
"Grain boundary" separates respective crystalline particles with different orientations in a polycrystalline solid. Grain boundaries are also called crystalline grain boundaries.
High-resolution HAADF-STEM image of polycrystalline silicon taken at an accelerating voltage of 300 kV. The boundary indicated by red allows is a grain boundary of crystalline silicon. The image reveals that the dumbbells of silicon atoms change their orientations across the boundary. This grain boundary is expressed by Σ3, [110]/{111}.
High-resolution HAADF-STEM image of polycrystalline silicon taken at an accelerating voltage of 300 kV. The boundary indicated by red allows is a grain boundary of crystalline silicon. The image reveals that the dumbbells of silicon atoms change their orientations across the boundary. This grain boundary is expressed by Σ3, [110]/{111}.
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