Prenucleation refers to the phenomenon of atomic ordering in liquid adjacent a liquid/solid interface at temperatures above its nucleation temperature. It produces precursor for heterogeneous and thus has strong influence on process. Oxide particles, including magnesia, spinel, alumina, are inevitably formed during liquid–metal handling casting. They may act as sites potential grain refinement....

Flame Aerosol Synthesis In article number 2211104, Lutz Mädler and co-workers report a novel thermochemical process control with coordinated precursor design, which enables the establishment of reactive spray that produces binary metal sulfides high surface area crystallinity in gas phase. Thus breakthrough technology capable producing multimetal (ternary, quaternary) is provided, will play key...

Mesostructured nickel oxide was formed with nickel sulfate and cationic surfactant cetyltrimethylammonium bromide (CTAB). X-ray diffraction (XRD) peaks at low scattering angles and transmission electron microscopy (TEM) indicated that a mesostructure was formed. However, these XRD patterns disappeared after calcination. The addition of sodium silicate in the precursor solutions produced a mesos...

Graphitic oxide has potential as a carbocatalyst for a wide range of reactions. Interest in this material has risen enormously due to it being a precursor to graphene via the chemical oxidation of graphite. Despite some studies suggesting that the chosen method of graphite oxidation can influence the physical properties of the graphitic oxide, the preparation method and extent of oxidation rema...

To make use of nano-sized particles for biomedical applications such nanomedicines for different diseases, it is important to study how nanoparticles behave when they interact with microorganisms. In the present study, we investigated the antibacterial performance of chromium oxide nanoparticles (Cr3O4 NPs) against two gram negative bacterial strains, Escherichia coli, and Pseudomonas aeruginos...

Here, we report a facile strategy for the synthesis of cadmium and cobalt metal-organic frameworks (MOFs), their subsequent conversion to corresponding oxide. Thus, Cd-MOF Co-MOF were prepared by successive ionic layer adsorption reaction (SILAR) using Cd 2+ or Co cation precursors p -phenylenediamine (PPD) anion precursor. As-synthesized particles with unique morphology converted into CdO 3 O ...

We have developed a means to perform “on the fly” electron spin resonance (ESR) measurements of NBTI defect generation. The approach permits ESR measurements to be performed during NBTI stress void of any recovery contamination. We demonstrate that elevated temperature (100°C) and modest negative polarity oxide electric field (<5MV/cm) generates ESR spectra of E’ oxide defects. (These defects a...

The plasma-based aerosol process developed for the direct coating of particles in gases with silicon oxide in a continuous chemical vapor deposition (CVD) process is presented. It is shown that non-thermal plasma filaments induced in a dielectric barrier discharge (DBD) at atmospheric pressure trigger post-DBD gas phase reactions. DBD operating conditions are first scanned to produce ozone and ...

The formation of the crystalline phases M2, M1, orthorhombic MoO3, and a tetragonal M5O14 (M=Mo,V,Nb) type phase during heat treatment of an amorphous Mo-V-Te-Nb oxide precursor in helium is investigated applying in-situ X-ray diffraction. The precursor was synthesized by precipitation, spray-drying and subsequent calcination of the dried orange powder in air at 275°C. Crystallization of M2 sta...

Solution-processed high-k dielectric TFTs attract much attention since they cost relatively little and have a simple fabrication process. However, it is still a challenge to reduce the leakage of the current density of solution-processed dielectric TFTs. Here, a simple solution method is presented towards enhanced performance of ZrO₂ films by intentionally increasing the concentration of precur...