WebAug 26, 2009 · At present, his research topics comprise structural studies of aperiodic crystals and their phase transformations, the modeling of order/disorder phenomena, … WebCrystallography treated order and periodicity synonymously, both serving equally to define the notion of a crystal. With that came the so-called “crystallographic restriction,” ... of all quasiperiodic crystals whose rank D is equal to the actual physical dimension d. For

Quasicrystal - Wikipedia

WebShe studied interdisciplinary natural sciences at the ETH Zurich and concluded her doctoral dissertation under the supervision of Prof. Walter Steurer at the Laboratory of Crystallography of the ETH. At present, … Web‘crystal’ we mean any solid having an essentially dis-crete diffraction pattern, and by ‘aperiodic crystal’ we mean any crystal in which three-dimensional lattice pe-riodicity … smart ica services

Quasicrystals - an overview ScienceDirect Topics

A quasiperiodic crystal, or quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can continuously fill all available space, but it lacks translational symmetry. While crystals, according to the classical crystallographic restriction theorem, can possess only two-, three-, four-, and six-fold rotational symmetries, the Bragg diffraction pattern of quasicrystals shows sharp peaks w… WebCrystallography treated order and periodicity synonymously, both serving equally to define the notion of a crystal. With that came the so-called “crystallographic restriction,” … WebThe IUCr is a scientific union serving the interests of crystallographers and other scientists employing crystallographic methods. smart ic card