Voorbeelden van quasicrystal

• In other words, we view a fully periodic set, or 'crystal', as a special kind of 'quasicrystal'.

• One of the commonly used definitions of a quasicrystal is that of an atomic structure which has a discrete component in its diffraction spectrum.

• In particular, they can be viewed as a mathematical abstraction of the set of atomic positions of a physical quasicrystal (at zero temperature, or at a given instant of time).

• Does there exist a nice characterization of the 'simplest' aperiodic sets, which might be used to define a notion of 'perfectly ordered quasicrystal'?

• This natural quasicrystal exhibits high crystalline quality, equalling the best artificial examples.

• Its underlying symmetry is also fivefold but it is not a quasicrystal.

• Glotzer and collaborators also hold the record for the densest tetrahedron packing and discovered that hard tetrahedrons can self-assemble into a dodecagonal quasicrystal.

• It forms an aperiodic pattern known as a quasicrystal.

• In order that the quasicrystal itself be aperiodic, this slice must avoid any lattice plane of the higher-dimensional lattice.

• Using mathematics for construction and analysis of quasicrystal structures is a difficult task for most experimentalists.

• For a periodic quasicrystal approximant with an 82-tetrahedron unit cell, they obtained a packing density as high as 85.03%.

• Recently, he has helped develop a photonic quasicrystal (the quasicrystal analogue of a photonic crystal) for efficiently trapping and manipulating light in selected wavebands.

• For a periodic crystal (as opposed to a quasicrystal), the group must also be consistent with maintenance of the three-dimensional translational symmetry that defines crystallinity.

• They are remarkable by containing micrometre-sized grains of icosahedrite, a naturally occurring quasicrystal aperiodic, yet ordered structure.

• Its discovery followed a 10-year-long systematic search by scientists to find the first natural quasicrystal.