Hydroxyapatite (HA)ynano-zirconia composite coatings were successfully produced through high velocity oxy-fuel (HVOF) spraying of radio frequency (RF) plasma synthesized powders. Microstructure characterization and morphology analysis on the nano-structured coatings were conducted using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), and d...

A new hierarchical approach is presented for elucidating the structural disorder in Ce1-x Gd x O2-x/2 solid solutions on different scale lengths. The primary goal of this investigation is to shed light on the relations between the short-range and the average structure of these materials via an analysis of disorder on the mesocopic scale. Real-space (pair distribution function) and reciprocal-sp...

The physicochemical properties and biological behavior of sintered-bovine-derived hydroxyapatite (BHAp) are here reported and compared to commercial synthetic-HAp (CHAp). Dense ceramics were sintered for 2 h and 4 h at 1200 °C to investigate their microstructure-structure-in-vitro behavior relationship for both HAp ceramics. Densification was directly proportional to sintering time, showing a g...

Atomic-resolution structures from small proteins have recently been determined from high-quality powder diffraction patterns using a combination of stereochemical restraints and Rietveld refinement [Von Dreele (2007), J. Appl. Cryst. 40, 133-143; Margiolaki et al. (2007), J. Am. Chem. Soc. 129, 11865-11871]. While powder diffraction data have been obtained from batch samples of small crystal-su...

With a view to investigate the influence of nano size on various physical properties of transition metal substituted ZnO, a series of materials were prepared by different chemical routes viz; Citrate gel, polyvinyl alcohol (PVA ) precursor and Chemical solution decomposition (CSD) methods. In the citrate gel method, the starting materials were nitrates and ethylene glycol acts as a gelating rea...

Ceria (CeO2) is an important rare earth oxide and has been widely investigated in the automotive exhaust puri cation, oxygen storage and release catalysis, and solid oxide fuel cell applications. In recent years, due to the excellent physical and chemical properties of nanosized particles, which are signi cantly different from those of bulk particles, there is considerable interest in enhancing...

Iron oxide nanoparticles have received sustained interest for biomedical applications as synthetic approaches are continually developed for control of nanoparticle proper‐ ties. However, many approaches focus solely on the material, rather than the complete optimization of synthe‐ sis and functionalization together to enhance translation into biological systems. Presented herein is a modified s...

BiFeO3 is an interesting material due to its multiferroic properties. It attracts attention potential applications in spintronics and microelectronics for data storage, among others. Single-phase bulk from difficult synthesize. The kinetics of perovskite phase formation most often leads the presence impurity phases. has been shown that low levels replacement Bi with rare earth ions lead stabili...

In this study, the effects and interactions of reaction time and capping agent assistance during sol-gel synthesis of magnesium substituted hydroxyapatite nanopowder (MgHA) on hydroxyapatite (HA) to β-tricalcium phosphate (β-TCP) ratio, Ca/P ratio and mean crystallite size was examined experimentally as well as through statistical analysis. MgHA nanopowders were synthesized by sol-gel technique...