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Robert Ammann (October 1, 1946 – May, 1994) was an amateur mathematician who made several significant and groundbreaking contributions to the theory of quasicrystals and aperiodic tilings. Ammann–Beenker tiling. Ammann attended Brandeis University, but generally did not go to classes, and left after three years.
Icosahedral quasicrystals have a three dimensional quasiperiodic structure and possess fifteen 2-fold, ten 3-fold and six 5-fold axes in accordance with their icosahedral symmetry. [56] Quasicrystals fall into three groups of different thermal stability: [57] Stable quasicrystals grown by slow cooling or casting with subsequent annealing,
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]
Photonic quasicrystals: A team of researchers including Steinhardt, Paul Chaikin, Weining Man and Mischa Megens designed and tested the first photonic quasicrystal with icosahedral symmetry in 2005. They were the first to demonstrate the existence of photonic band gaps ("PBGs"). [ 56 ]
There are in nature one, two, and three-dimensional quasicrystals. Mathematicians define a quasicrystal as a set of discrete points whose Fourier transform is also a set of discrete points. Odlyzko has done extensive computations of the Fourier transform of the nontrivial zeros of the zeta function, and they seem to form a one-dimensional ...
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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.
Dan Shechtman (Hebrew: דן שכטמן; born January 24, 1941) [1] is the Philip Tobias Professor of Materials Science at the Technion – Israel Institute of Technology, an Associate of the US Department of Energy's Ames National Laboratory, and Professor of Materials Science at Iowa State University.