We report a rapid, self-catalyzed, solid precursor-based thermal plasma chemical vapor deposition process for depositing a conformal, nonporous, and optically transparent nanocrystalline ZnO thin film at 130 Torr (0.17 atm). Pure solid zinc is inductively heated and melted, followed by ionization by thermal induction argon/oxygen plasma to produce conformal, nonporous nanocrystalline ZnO films ...

A class of nanocrystalline alloys, HITPERM ~Fe, Co!–M–B–Cu (M5Zr,Hf,Nb, etc.! found to exhibit excellent soft-magnetic properties is being studied for use as a soft-magnetic underlayer for perpendicular recording media. Previously, we reported that HITPERM films of ;100 nm thickness sputtered at room temperature ~RT! and at ;2.3 W/cm power density had exhibited an amorphous microstructure, whic...

Objective: To evaluate the efficacy of dressing based on silver as nanocrystalline silver and silver sulfadiazine in patients with burns and clinical signs of infection, in the healing process, seeking a favorable outcome of local therapy. Methods: A prospective and exploratory study, carried out with patients with burns with a quantitative approach by the method of clinical investigation. The ...

Multicomponent Fe65.5Cr4Mo4Ga4P12C5B5.5 amorphous alloy is known to have good soft magnetic properties combined with large glass-forming ability. Searching for a nanocrystalline structure that could improve its magnetic properties, Cr and Mo were partially substituted by Cu. The devitrification process of Cu-containing alloys shows an additional broad crystallization event that can be described...

An evident inequality between the enthalpy of crystallization of amorphous selenium, DHx , and the enthalpy difference between the undercooled liquid and the conventional polycrystalline selenium, DHl→c, was observed, which is inconsistent with the widely accepted idea that the two enthalpies should be equal. The inequality between the two enthalpies is attributed to the excess enthalpy of the ...

INTRODUCTION Nanosuspensions combine the advantages of nanotherapeutics (e.g. increased dissolution rate and saturation solubility) with ease of commercialisation. Transformation of nanosuspensions to solid oral and inhalable dosage forms minimises the physical instability associated with their liquid state, enhances patient compliance and enables targeted oral and pulmonary drug delivery. AR...

BACKGROUND Many shortcomings exist in the traditional methods of treating bone defects, such as donor tissue shortages for autografts and disease transmission for allografts. The objective of this study was to design a novel three-dimensional nanostructured bone substitute based on magnetically synthesized single-walled carbon nanotubes (SWCNT), biomimetic hydrothermally treated nanocrystalline...

In this study we investigated the effects of Bi addition on the microstructure and mechanical properties of an electrodeposited nanocrystalline Ag coating. Microstructural features were investigated with transmission electron microscopy (TEM). The results indicate that the addition of Bi introduced nanometer-scale Ag-Bi solid solution particles and more internal defects to the initial Ag micros...

Molecular dynamics deformation studies of nanocrystalline metals suggest a plasticity mechanism where dislocations are nucleated at grain boundaries (GB), travel through the grain being hindered by local GB stress intensities, to be finally absorbed in the surrounding GBs [1][2]. Recent constant strain rate molecular dynamics simulations of nanocrystalline Al demonstrated that dislocations can ...

Nanocrystalline materials often exhibit extraordinary mechanical and physical properties but their applications at elevated temperatures are impaired by the rapid grain growth. Moreover, the grain growth in nanocrystalline oxide nanofibers at high temperatures can occur at hundreds of degrees lower than that would occur in corresponding bulk nanocrystalline materials, which would eventually bre...