Amorphous composites, nanocrystalline

Marra, D. C., Edelberg, E. A., Nanone, R. L., and Aydil, E. S., Silicon hydride composition of plasma-deposited hydrogenated amorphous and nanocrystalline silicon films and surfaces. 7. Vac. Sci. Technol. A 16, 3199-3210 (1998a). 

Finally, the pHEMA-based functional hydrogel-CP composites developed here are subjects of extensive in vitro and in vivo evaluations. Our preliminary in vitro cell culture evaluations have shown that osteoblasts can adhere and proliferate over the functional hydrogel-CP composites containing up to 10% anionic residues. We are also interested to learn how the underlying anionic mineral binding motifs of the composite would direct new mineral deposition by osteoblasts once the amorphous (or nanocrystalline) CP layer is resorbed by osteoclasts upon implantation. 

Nanocrystalline alloys Rapid solidification (amorphization) and crystallization Exchange interaction Composition and proportion of phases... 

A different approach was taken by Kumar and associates [61]. Fie also embedded metals in polymers, but used as his precursor the polymer and not the monomer. In his first study a composite material containing amorphous Cu nanoparticles and nanocrystalline CU2O embedded in polyanUine matrices was prepared by a sonochemical method. These composite materials were obtained from the soni-cation of copper (II) acetate when aniline or 1% v/v aniline-water was used as the solvent. Mechanisms for the formation of these products are proposed and discussed. The physical and thermal properties of the as-prepared composite materials are presented. A band gap of 2.61 eV is estimated from optical measurements for the as-prepared CU2O in polyaniline. 

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