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. 2014 Apr 4;21(Pt 3):507–517. doi: 10.1107/S1600577514004962

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© Lin Zhang et al. 2014

This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

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(a) Elastic modulus in the directions and . (b) Shear modulus and (c) Poisson’s ratio in the directions 12 and 23 for silicon (111). The vector is fixed in the normal direction [111], and the vectors and are in the crystal plane (111). The angle α is between the vectors and [0 1 −1]/2^1/2 in the crystal plane: (α = 0°) = [0 1 −1]/2^1/2, (α = 90°) = [2 −1 −1]/6^1/2.

Inline graphic — (a) Elastic modulus in the directions and . (b) Shear modulus and (c) Poisson’s ratio in the directions 12 and 23 for silicon (111). The vector is fixed in the normal direction [111], and the vectors and are in the crystal plane (111). The angle α is between the vectors and [0 1 −1]/2^1/2 in the crystal plane: (α = 0°) = [0 1 −1]/2^1/2, (α = 90°) = [2 −1 −1]/6^1/2.