Since bulk silicon shows an orthotropic behavior with equivalent directions along < 100 >, a similar behavior is assumed for the RVE.
In Figure 3b, the zone axis of the hexagonal plate is [0001] and the six directions normal to the edge are < 2 1 _ 1 _ 0 > and its other five equivalent directions.
Here, it should be pointed out that in the bcc structure of Mo, <211 > shows six geometrically equivalent directions (Figure8d), and in theory, nanowires may grow along all these directions as Zhou et al.[14] suggested.
The motion of partial dislocations (b = 1/3 [011¯0〉 and 1/3 [101¯0〉) uvtw〉 refers to the direction [uvtw] and the two equivalent directions related by the 3-fold rotational symmetry about [0001].
Among the crystal classes lacking inversion symmetry, those possessing at least a direction whose two senses are geometrically or physically different (polar direction) are called piezoelectric; among those, pyroelectric crystal classes possess a polar direction which has no symmetrically equivalent directions, and are therefore capable of sustaining a permanent electric dipole moment.
In particular, in the direction of the six corners of the platelets (i.e., [11̅0] and the other five equivalent directions) straight Cu atomic columns can form preferential avenues for the inflow/outflow of cations (see also the sketches in Figure 6) with a small perturbation of the anion sublattice.
No incomplete overgrowth layers were observed on {111}A-type facets suggesting a very rapid growth relative the {111}B-type facets in the ⟨112⟩-equivalent directions.
The planes, A300's and A319's, were selected jointly by the F.A.A.; its French equivalent, the Direction Générale de l'Aviation Civile; the National Transportation Safety Board, which is handling the investigation of Flight 587; and Airbus.
On the other hand, the EEASs we observed had several properties that were different from those of omega bands, such as greater eastward propagation speed (3 4 km/s), shorter associated magnetic pulsation periods (4 6 min), and a different ionospheric equivalent current direction.
The equivalent growth direction in the hexagonal case is [000.1̅], with the stacking sequence ···ABABAB··· for WZ, or 2H in the Ramsdell notation.
