title: Internal stresses, normal modes, and nonaffinity in three-dimensional biopolymer networks.
abstract: We numerically investigate deformations and modes of networks of semiflexible biopolymers as a function of crosslink coordination number z and strength of bending and stretching energies. In equilibrium filaments are under internal stress, and the networks exhibit shear rigidity below the Maxwell isostatic point. In contrast to two-dimensional networks, ours exhibit nonaffine bending-dominated response in all rigid states, including those near the maximum of z=4 when bending energies are less than stretching ones.
authors.affiliation: Universiteit Leiden, Instituut-Lorentz, Postbus 9506, NL-2300 RA Leiden, The Netherlands.
authors.forename: E M
authors.initials: EM
authors.lastname: Huisman
authors.forename: T C
authors.initials: TC
authors.lastname: Lubensky
mesh_terms: D001696:Biomechanical Phenomena; D001704:Biopolymers / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D013314:Stress, Mechanical; D013816:Thermodynamics
chemical_list: D001704:Biopolymers