This paper deals with the morphology and surface chemistry of faceted voids existing in singlequasicrystalline icosahedral Al70 5Pd2i.0Mn8 5. By observation with a scanning electron microscope of surfaces obtained by cleavage of the quasicrystal, the habit planes of the dodecahedral voids were identified. The chemical surface composition of the void surface was determined by Auger electron spec...

We present evidence for a naturally occurring quasicrystal consisting of micron-sized grains of Al63Cu24Fe13 with icosahedral symmetry embedded in a sample of khatyrkite (nominally, (Cu,Zn)Al2) obtained from the Khatyrka ultramafic zone of the Koryak Mountains in the northern half of the Kamchatka Peninsula.

quasicrystal Ayelet Ganany-Padowicz, Irit Juwiler, Ofer Gayer, Alon Bahabad, and Ady Arie Department of Physical Electronics, Fleischman Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel Department of Electrical and Electronics Engineering, Sami Shamoon College of Engineering, Ashdod 77245, Israel Department of Physics and JILA, University of Colorado at Boulder and NIST, Boul...

We introduce the 2-dimensional square Fibonacci tiling and its generalization to higher dimensions as models for quasicrystals without ‘forbidden’ symmetries. We derive some of the basic mathematical properties of the tiling as well as calculate its diffraction pattern. We discuss the relevance of the Fibonacci tiling for quasicrystal research and for applications in other fields.  2002 Elsevi...

This paper shows that there are three types of periodic directions in the rational approximants of an icosahedral quasicrystal weakly, planar and strongly periodic directions. The classifying criteria take into account the periodicity properties of these directions in the direct and

Icosahedral quasicrystals deform plastically by dislocation motion. The deformation behaviour can be modelled by simple equations of dislocation mobility, the damage of the quasicrystal structure and the kinetics of dislocation evolution, but fundamental questions are still discussed, like the mode of dislocation motion (glide or climb) and the role of phason defects. 2003 Acta Materialia Inc. ...

We study the ground state of low energy dense QCD with assumption chiral condensates quarks. Under an external magnetic field, mesons could form soliton lattices via anomaly. For such scenarios, we present a unified description pions and $\eta$ meson $U(2)$ field in framework perturbation theory. Our result shows is mixture magnetized domain walls formed by neutral pion $\pi^0$ when they coexis...

Localized nonlinear modes, or solitons, are obtained for the two-dimensional nonlinear Schrödinger equation with various external potentials that possess large variations from periodicity, i.e., vacancy defects, edge dislocations, and quasicrystal structure. The solitons are obtained by employing a spectral fixed-point computational scheme. Investigation of soliton evolution by direct numerical...