Metallic glass is composed of unaligned distorted polyhedra.(EMERGING TECHNOLOGY)

Advanced Materials & Processes,  April, 2006  

Tags: atom, Johns Hopkins University

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Metallic glass atoms do not arrange themselves in a completely random way, report scientists at Johns Hopkins University, Baltimore, Md. Instead, groups of seven to 15 atoms tend to arrange themselves around a central atom, forming three-dimensional shapes called Kasper polyhedra. Similar shapes are found in crystalline metals, but in metallic glass, these polyhedra are distorted and do not align themselves in long rows.

In metallic glass, the polyhedra join together in unique ways as small nanometer-scale clusters. These structural features are described as chemical and topological ...

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