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Wearless friction force experiments [Science 309, 1354 (2005)10.1126/science.1113239] have recently demonstrated that tribological response in quasicrystals could be related to the exotic atomic structure of the bulk material. Here, by numerical simulations, we address the origin of the experimentally observed friction anisotropy on a twofold decagonal quasicrystal surface. We predict the disti...
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We present evidence that a rock sample found in the Koryak Mountains in Russia and containing icosahedrite, an icosahedral quasicrystalline phase with composition Al(63)Cu(24)Fe(13), is part of a meteorite, likely formed in the early solar system about 4.5 Gya. The quasicrystal grains are intergrown with diopside, forsterite, stishovite, and additional metallic phases [khatyrkite (CuAl(2)), cup...
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Scott M. Thompson,1 Joseph P. Y. Kao,1,2 Richard H. Kramer,3 Kira E. Poskanzer,4 R. Angus Silver,5 David Digregorio,5 and Samuel S.-H. Wang6 1Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland, 21201, 2Medical Biotechnology Center, University of Maryland Biotechnology Institute, Baltimore, Maryland 21201, 3Department of Molecular and Cell Biology, Universit...
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We report the first occurrence of a natural quasicrystal with decagonal symmetry. The quasicrystal, with composition Al71Ni24Fe5, was discovered in the Khatyrka meteorite, a recently described CV3 carbonaceous chondrite. Icosahedrite, Al63Cu24Fe13, the first natural quasicrystal to be identified, was found in the same meteorite. The new quasicrystal was found associated with steinhardtite (Al38...
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ژورنال
عنوان ژورنال: Physics
سال: 2023
ISSN: ['2624-8174']
DOI: https://doi.org/10.1103/physics.16.7