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Science 7 September 1984:
Vol. 225. no. 4666, pp. 983 - 989
DOI: 10.1126/science.225.4666.983
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Articles

Packing Structures and Transitions in Liquids and Solids

Frank H. Stillinger 1 and Thomas A. Weber 1

1 Members of the technical staff in the Chemical Physics Department, AT&T Bell Laboratories, Murray Hill, New Jersey 07974.

Classification of potential energy minima—mechanically stable molecular packings—offers a unifying principle for understanding condensed phase properties. This approach permits identification of an inherent structure in liquids that is normally obscured by thermal motions. Melting and freezing occur through characteristic sequences of molecular packings, and a defect-softening phenomenon underlies the fact that they are thermodynamically first order. The topological distribution of feasible transitions between contiguous potential minima explains glass transitions and associated relaxation behavior.


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