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Exceptionally large positive and negative anisotropic thermal expansion of an organic crystalline material

Exceptionally large positive and negative anisotropic thermal expansion of an organic crystalline... Occasionally, organic crystalline materials contract when heated (negative thermal expansion), and the mechanisms responsible for this phenomenon are poorly understood. The arrangement of dumbbell-shaped molecules in an organic material is shown to give rise to its negative thermal expansion. The packing and intermolecular interactions facilitate a cooperative mechanical response to temperature causing a decrease in lattice dimensions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Materials Springer Journals

Exceptionally large positive and negative anisotropic thermal expansion of an organic crystalline material

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References (38)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Nature Publishing Group
Subject
Materials Science; Materials Science, general; Optical and Electronic Materials; Biomaterials; Nanotechnology; Condensed Matter Physics
ISSN
1476-1122
eISSN
1476-4660
DOI
10.1038/nmat2583
Publisher site
See Article on Publisher Site

Abstract

Occasionally, organic crystalline materials contract when heated (negative thermal expansion), and the mechanisms responsible for this phenomenon are poorly understood. The arrangement of dumbbell-shaped molecules in an organic material is shown to give rise to its negative thermal expansion. The packing and intermolecular interactions facilitate a cooperative mechanical response to temperature causing a decrease in lattice dimensions.

Journal

Nature MaterialsSpringer Journals

Published: Nov 22, 2009

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