0 a solid substance with a structure that contains patterns and repetition but is not fully symmetrical (= exactly matching) like a crystal --
Its discovery followed a 10-year-long systematic search by scientists to find the first natural quasicrystal.
They are remarkable by containing micrometre-sized grains of icosahedrite, a naturally occurring quasicrystal aperiodic, yet ordered structure.
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.
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 quasicrystal approximant with an 82-tetrahedron unit cell, they obtained a packing density as high as 85.03%.
Using mathematics for construction and analysis of quasicrystal structures is a difficult task for most experimentalists.
In order that the quasicrystal itself be aperiodic, this slice must avoid any lattice plane of the higher-dimensional lattice.
It forms an aperiodic pattern known as a quasicrystal.
