Natural Quasicrystals-Reference-Cited by-同舟云学术

Natural Quasicrystals

Published:2009-06-05 Issue:5932 Volume:324 Page:1306-1309
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Bindi Luca¹,Steinhardt Paul J.²,Yao Nan³,Lu Peter J.⁴

Affiliation:

1. Museo di Storia Naturale, Sezione di Mineralogia, Università degli Studi di Firenze, Firenze I-50121, Italy.

2. Princeton Center for Theoretical Science, and Joseph Henry Laboratories, Department of Physics, Princeton University, Princeton, NJ 08544, USA.

3. Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.

4. Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

Abstract

Forbidden Crystals In crystalline materials, a unit cell is replicated in space through a series of rotations, inversions, and reflections. In order to fully fill space, only certain rotational symmetries are allowed. Quasicrystals contain aperiodic tilings of two or more basic shapes that allow these forbidden rotation symmetries. A number of quasicrystalline materials have been synthesized in the lab, including a number of aluminum alloys. Bindi et al. (p. 1306 ) examined samples of the mineral khatyrkite, with a nominal composition of (Cu,Zn)Al 2 . A number of quasicrystalline grains with composition similar to synthetically formed materials were observed. Thus, quasicrystals can form in nature under geological conditions.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference15 articles.

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2. Penrose R., Bull. Inst. Math. Appl. 10, 266 (1974).

3. C. Janot Quasicrystals: A Primer (Oxford Univ. Press Oxford 1994).

4. P. A. Bancel Quasicrystals: The State of the Art D. DiVincenzo P. J. Steinhardt Eds. (World Scientific Singapore 1991) pp. 17–56.

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