title: Nanoscale deformation mechanisms in bone.
abstract: Deformation mechanisms in bone matrix at the nanoscale control its exceptional mechanical properties, but the detailed nature of these processes is as yet unknown. In situ tensile testing with synchrotron X-ray scattering allowed us to study directly and quantitatively the deformation mechanisms at the nanometer level. We find that bone deformation is not homogeneous but distributed between a tensile deformation of the fibrils and a shearing in the interfibrillar matrix between them.
authors.affiliation: Max Planck Institute of Colloids and Interfaces, MPI-KG Golm, D-14424 Potsdam, Germany. himadri.gupta@mpikg-golm.mpg.de
authors.forename: Himadri S
authors.initials: HS
authors.lastname: Gupta
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wagermaier
authors.forename: Gerald A
authors.initials: GA
authors.lastname: Zickler
authors.forename: D
authors.initials: D
authors.lastname: Raz-Ben Aroush
authors.forename: Sérgio S
authors.initials: SS
authors.lastname: Funari
authors.forename: Paul
authors.initials: P
authors.lastname: Roschger
authors.forename: H Daniel
authors.initials: HD
authors.lastname: Wagner
authors.forename: Peter
authors.initials: P
authors.lastname: Fratzl
mesh_terms: D000818:Animals; D001857:Bone Matrix / Q000737:chemistry*; D001842:Bone and Bones / Q000737:chemistry* / Q000000981:diagnostic imaging / Q000648:ultrastructure; D002417:Cattle; D004548:Elasticity; D024022:Fibrillar Collagens / Q000737:chemistry*; D011859:Radiography; D013314:Stress, Mechanical; D013718:Tensile Strength; D014961:X-Ray Diffraction
chemical_list: D024022:Fibrillar Collagens