High-resolution transmission electron microscopy study of nanostructured hydroxyapatite.
Crystalline properties of synthetic nanostructured hydroxyapatite (n-HA) were studied using high-resolution transmission electron microscopy. The focal-series-restoration technique, obtaining exit-plane wavefunction and spherical aberration-corrected images, was successfully applied for the first time in this electron-beam-susceptible material. Multislice simulations and energy dispersive X-ray spectroscopy were also employed to determine unequivocally that n-HA particles of different size preserve stoichiometric HA-like crystal structure. n-HA particles with sizes of twice the HA lattice parameter were found. These results can be used to optimize n-HA sinterization parameters to improve bioactivity.
Biggemann
Daniel
D
Brazilian Synchrotron Light Laboratory, Caixa Postal 6192, Campinas-SP 13083-970, Brazil.
da Silva
Marcelo H Prado
MH
Rossi
Alexandre M
AM
Ramirez
Antonio J
AJ
D017886:Durapatite / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D013057:Spectrum Analysis
D017886:Durapatite