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Architectured materials

Straining to expand entanglements

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Porous solids comprising a self-entangled coiled polymer fibre or metal wire reversibly increase their volume when either stretched or compressed in an axial direction, possibly providing a new type of mechanical behaviour for tuning functional properties.

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Figure 1: Coil-based wine-rack model for describing how a transition in coil stiffness, caused by inter-coil contact, can produce a structure that increases its volume when either stretched (red arrows) or compressed (blue arrows).

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Authors and Affiliations

  1. Ray H. Baughman is at the Alan G. MacDiarmid NanoTech Institute at the University of Texas at Dallas, Texas 75083, USA,

    Ray H. Baughman

  2. Alexandre F. Fonseca is in the Applied Physics Department at the State University of Campinas, Campinas SP, 13083-859, Brazil,

    Alexandre F. Fonseca

Authors
  1. Ray H. Baughman
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  2. Alexandre F. Fonseca
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Correspondence to Ray H. Baughman.

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Baughman, R., Fonseca, A. Straining to expand entanglements. Nature Mater 15, 7–8 (2016). https://doi.org/10.1038/nmat4436

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