Nanoscale deformation mechanisms in bone.
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.
Gupta
Himadri S
HS
Max Planck Institute of Colloids and Interfaces, MPI-KG Golm, D-14424 Potsdam, Germany. himadri.gupta@mpikg-golm.mpg.de
Wagermaier
Wolfgang
W
Zickler
Gerald A
GA
Raz-Ben Aroush
D
D
Funari
Sérgio S
SS
Roschger
Paul
P
Wagner
H Daniel
HD
Fratzl
Peter
P
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
D024022:Fibrillar Collagens