Background: Nanocrystalline cellulose has potential for biomedical applications due to its abundant material availability, biodegradability, biocompatibility, and low weight. Research on nanocrystalline as medical implants rarely been studied in the past 10 years, although this tremendous such bone cardiovascular implants.
 Objective: This study aims analyze development of research using a...

Nanocrystalline thermoelectric materials based on Si have long been of interest because Si is earth-abundant, inexpensive, and non-toxic. However, a poor understanding of phonon grain boundary scattering and its effect on thermal conductivity has impeded efforts to improve the thermoelectric figure of merit. Here, we report an ab-initio based computational study of thermal transport in nanocrys...

The development of Fe73.5Si13.5B9Nb3Cu1 ~FINEMET! by Yoshizawa et al. and Fe88Zr7B4Cu1 ~NANOPERM! by Inoue et al. have shown that nanocrystalline microstructures can play an important role in the production of materials with outstanding soft magnetic properties. The FINEMET and NANOPERM materials rely on nanocrystalline a-Fe3Si and a-Fe, respectively, for their soft magnetic properties. The mag...

A new approach to grain boundary engineering (GBE) for high performance nanocrystalline materials, especially those produced by electrodeposition and sputtering, is discussed on the basis of some important findings from recently available results on GBE for nanocrystalline materials. In order to optimize their utility, the beneficial effects of grain boundary microstructures have been seriously...

Nanocrystalline alumina powder has been synthesized using solution combustion method. The obtained nanocrystalline alumina powder was used as an efficient catalyst for the synthesis of imidazo[1,2-a]azine derivatives from one-pot three component reaction of benzaldehyde, 2-aminoazine and trimethylsilylcyanide under ultrasonic irradiation and refluxing condition. Reusability of catalyst and shor...

Nanocrystalline cobalt oxide activates propane, yielding propene at room temperature and pressure.

3D molecular dynamics simulations are performed to investigate the role of microstructural confinement on room temperature stress-driven grain boundary (GB) motion for a general population of GBs in nanocrystalline Al thin films. Detailed analysis and comparison with experimental results reveal how coupled GB migration and GB sliding are manifested in realistic nanoscale networks of GBs. The pr...

We present the synthesis and characterization of nanocrystalline II VI semiconductors of mixed composition CdSe ZnSe CdS grown in fatty acid Langmuir Schaefer multi layer templates The controlled production of i homogeneous nanocrystalline CdxZn xSe alloys and ii heterogeneous mixtures of di erent pure composition II VI semiconductors such as CdSe and ZnSe provides in addition to the size contr...

In this paper we present results on silicon thin films deposited by Hot-Wire CVD at low substrate temperature (200oC). Films ranging from amorphous to nanocrystalline were obtained by varying the filament temperature from 1500 to 1800oC. A crystalline fraction of 50% was obtained for the sample deposited at 1700oC. The results obtained seemed to indicate that atomic hydrogen plays a leading rol...

In this study, we made the heterojunction solar cells on Si substrate by fabricating a nanocrystalline Si/SiO2 superlattice emitter structure. Amorphous silicon and silicon dioxide superlattice were prepared by rf Si sputtering and plasma oxidation, respectively. The deposited amorphous silicon was crystallized at high temperature. Microstructure studies by TEM show that amorphous silicon was c...