Search results
Results from the WOW.Com Content Network
Recent studies show typically brittle quasicrystals can exhibit remarkable ductility of over 50% strains at room temperature and sub-micrometer scales (<500 nm). [62] An application was the use of low-friction Al–Cu–Fe–Cr quasicrystals [63] as a coating for frying pans.
The book is divided into two parts. The first part covers the history of crystallography, the use of X-ray diffraction to study crystal structures through the Bragg peaks formed on their diffraction patterns, and the discovery in the early 1980s of quasicrystals, materials that form Bragg peaks in patterns with five-way symmetry, impossible for a repeating crystal structure.
Complex metallic alloys is an umbrella term for intermetallic compounds with a relatively large unit cell.There is no precise definition of how large the unit cell of a complex metallic alloy has to be, but the broadest definition includes Zintl phases, skutterudites, and Heusler compounds on the most simple end, and quasicrystals on the more complex end.
Download as PDF; Printable version; In other projects Wikidata item; ... Pages in category "Quasicrystals" The following 7 pages are in this category, out of 7 total.
These form quasicrystals in the stoichiometry around R 9 Mg 34 Zn 57. [2] Magnetically, they form a spin glass at cryogenic temperatures. While the experimental discovery of quasicrystals dates back to the 1980s, the relatively large, single grain nature of some Ho–Mg–Zn quasicrystals has made them a popular way to illustrate the concept ...
The existence of quasicrystals and Penrose tilings shows that the assumption of a linear translation is necessary. Penrose tilings may have 5-fold rotational symmetry and a discrete lattice, and any local neighborhood of the tiling is repeated infinitely many times, but there is no linear translation for the tiling as a whole.
Quasi-crystals are supramolecular aggregates exhibiting both crystalline (solid) properties as well as amorphous, liquid-like properties.. Self-organized structures termed "quasi-crystals" were originally described in 1978 by the Israeli scientist Valeri A. Krongauz of the Weizmann Institute of Science, in the Nature paper, Quasi-crystals from irradiated photochromic dyes in an applied ...
Dov I. Levine (דב לוין, born July 19, 1958) is an American-Israeli physicist, known for his research on quasicrystals, [1] soft condensed matter physics (including granular materials, emulsions, and foams), and statistical mechanics out of equilibrium. [2]