New Collegiate Dictionary. 2001.
quasicrystal — [kwā′sīkris΄təl] n. Physics any of a class of solid materials characterized by an irregular, repetitive structural arrangement of atoms that is intermediate between the orderly structure of a crystal and the amorphous structure of a glass… … English World dictionary
Quasicrystal — Atomic model of an aluminum palladium manganese (Al Pd Mn) quasicrystal surface. Similar to Fig. 6 in Ref.[1] A quasiperiodic crystal, or, in short, quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can… … Wikipedia
quasicrystal — /kway zuy kris tl, kway suy , kwah see , zee /, n. a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves. [1985 90] * * * Introduction also called quasi periodic crystal … Universalium
quasicrystal — noun any solid with conventional crystalline properties but exhibiting a point group symmetry inconsistent with translational periodicity … Wiktionary
quasicrystal — qua•si•crys•tal [[t]ˌkweɪ zaɪˈcrys tl, ˌkweɪ saɪ , ˌkwɑ si , zi [/t]] n. phs cry a form of solid matter whose atoms are arranged like those of a crystal but assume patterns that do not exactly repeat themselves • Etymology: 1985–90 … From formal English to slang
quasicrystal — ˈ ̷ ̷ (ˌ) ̷ ̷ ˌ ̷ ̷ ̷ ̷ noun Etymology: quasi (II) + crystal (I) : a body of solid material that resembles a crystal in being composed of repeating structural units but that incorporates two or more unit cells into a quasiperiodic structure •… … Useful english dictionary
Robert Ammann — (October 1, 1946 ndash; May, 1994) was an amateur mathematician who made several significant and groundbreaking contributions to the theory of quasicrystals and aperiodic tilings.Ammann attended Brandeis University, but generally did not go to… … Wikipedia
Dan Shechtman — דן שכטמן Born January 24, 1941 (1941 01 24) (age 70) Tel … Wikipedia
Penrose tiling — A Penrose tiling is a nonperiodic tiling generated by an aperiodic set of prototiles named after Roger Penrose, who investigated these sets in the 1970s.Because all tilings obtained with the Penrose tiles are non periodic, Penrose tilings are… … Wikipedia
Paul Steinhardt — Infobox Scientist box width = 300px name = Paul J. Steinhardt image width = 250px caption = At the 2008 World Science Festival in New York City birth date = birth place = death date = death place = residence = U.S. citizenship = nationality =… … Wikipedia
