The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section A: Foundations and Advances.
Periodic diffraction from an aperiodic monohedral tiling
The diffraction pattern from the quasicrystalline `hat monotile' is periodic with sixfold chiral symmetry, p6. Triangular patches of discrete satellite reflections appear near the 2/3 2/3 hexagonal reciprocal-lattice locations.
Permissible domain walls in monoclinic MAB ferroelectric phases
All the possibilities for permissible (mismatch-free) walls between monoclinic domains of pseudocubic ferroic perovskites are analyzed. Analytical expressions are derived for the orientation of such walls, the orientation relationship between the lattice vectors and the separation between Bragg peaks diffracted from matched domains.
Symmetry groups of two-way twofold and three-way threefold fabrics
The symmetry groups of two-way twofold fabrics and three-way threefold fabrics are derived, including geometric representations of all possible layer symmetry group structures. A method to arrive at a two-way twofold fabric or a three-way threefold fabric with a given symmetry group type is discussed, using tools in color symmetry theory.