Normal stresses in semiflexible polymer hydrogels.

@article{Vahabi2018NormalSI,
  title={Normal stresses in semiflexible polymer hydrogels.},
  author={Mahsa Vahabi and Bart E. Vos and Henri C G de Cagny and Daniel Bonn and Gijsje H. Koenderink and Fred C. MacKintosh},
  journal={Physical review. E},
  year={2018},
  volume={97 3-1},
  pages={
          032418
        }
}
Biopolymer gels such as fibrin and collagen networks are known to develop tensile axial stress when subject to torsion. This negative normal stress is opposite to the classical Poynting effect observed for most elastic solids including synthetic polymer gels, where torsion provokes a positive normal stress. As shown recently, this anomalous behavior in fibrin gels depends on the open, porous network structure of biopolymer gels, which facilitates interstitial fluid flow during shear and can be… Expand
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