Materials Literature
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The freezing of concentrated colloidal suspensions is a complex physical process involving a large number of parameters. These parameters provide unique tools to manipulate the architecture of freeze‐cast materials at multiple length scales in a single processing step. However, we are still far from developing predict…
Carbon nanotubes (CNTs) have been well studied theoretically and experimentally. Perfect CNTs have a crystalline structure formed by hexagonal network; defects cause the tubule to curve. CNTs with different tubule morphologies have their own special properties and potential applications. So far, many different shapes,…
The central goal of synthetic chemistry of colloidal nanocrystals at present is to discover functional materials. Such functional materials should help mankind to meet the tough challenges brought by the rapid depletion of natural resources and the significant increase of population with higher and higher living stand…
Our bones are full of microscopic cracks, but the hierarchical character of the bones’ structure—from molecular to macroscopic scales—makes them remarkably resistant to fracture.
Chapter I: Introduction (Joseph D. Menczel, R. Bruce Prime and Patrick K. Gallagher). Chapter II: Differential Scanning Calorimetry (Joseph D. Menczel, Lawrence H. Judovits, R. Bruce Prime, Harvey E. Bair, Mike Reading, and Steven Swier). 1. Introduction. 2. Elements of Thermodynamics in DSC. 3. The Basics of Differen…
We report graphene films composed mostly of one or two layers of graphene grown by controlled carbon precipitation on the surface of polycrystalline Ni thin films during atmospheric chemical vapor deposition (CVD). Controlling both the methane concentration during CVD and the substrate cooling rate during graphene gro…
A high, temperature‐stable dielectric constant (∼1000 from 0° to 300°C) coupled with a high electrical resistivity (∼10 12 Ω·cm at 250°C) make 0.7 BaTiO 3 –0.3 BiScO 3 ceramics an attractive candidate for high‐energy density capacitors operating at elevated temperatures. Single dielectric layer capacitors were prepare…
The crystal structure of surface coatings on Al1050 alloy by PEO (Plasma Electrolytic Oxidation), were investigated. The electrolyte for PEO was Na-Si-P system solution. The main crystalline phase were -alumina and -alumina. Crystallinity was increased with applied voltage and applied time. The dominant crystalline ph…
In this study, CNT/TiO 2 composites derived from various titanium alkoxides and multiwalled carbon nanotubes (MWCNTs) were synthesized and characterized.Surface areas and pore volumes of the CNT/TiO 2 samples showed catastrophic decrease due to deposition of titanium compounds.Scanning electron microscopy (SEM) result…
Abstract Scales are secondary deposits constituted by inorganic chemical compounds present in an anthropogenic system. They are generated by changes in the thermodynamic, kinetic and hydrodynamics conditions[1] when formation fluids are produced, or by mutual physicochemical incompatibility between production and inje…
The delivery of anticancer drugs to the brain is profoundly limited by blood-brain barrier (BBB)The purpose of this work is to develop a new carrier for doxorubicin to overcome the BBB. Polyamidoamine (PAMAM) dendrimer, a novel nanoscopic high-branching polymer, was exploited as an efficient carrier of doxorubicin. Th…
Poly(acrylic acid), poly(N-isopropylacrylamide) and polyacrylamide functionalized MWNTs were prepared by Ce(IV)-induced redox radical polymerization. The reaction can be conducted in aqueous media at room temperature, and the polymer graft ratio increased with the increase of monomer feed ratio. MWNTs anchored with PA…
The layer-by-layer (LbL) self-assembly technique has emerged as a simple and versatile method for coating biological and non-biological templates for various biomedical applications. A promising avenue of this technique lies in the encapsulation of drugs and other biological substances for controlled release. Fundamen…
A combination of analytical techniques such as atomic absorption spectroscopy (AAS), X-ray diffraction (XRD), infra red spectral (IR) analysis, energy dispersive analysis of X-ray (EDAX), differential thermal analysis (DTA) and thermogravimetric analysis (TGA) were employed to characterize clays from Odukpani, Cross R…
Abstract Zr-containing SBA-15 materials with hollow spherical morphology were synthesized via adding zirconium into SBA-15 synthesis solution and adjusting pH to about 4–5 with ammonia water. The hollow spherical mesoporous materials were observed in micron scale, and the shell thickness was about 100 nanometers. Zirc…
In the recent years, there has been a growing interest in the development of nanoparticles based targeting agents for the tumor diagnostics and therapeutics. This is because of their potential to detect the tumor and treat the diseased tissue at the cellular and molecular level. In this respect nanoscale magnetic mate…
The response of concrete structures subjected to shock and blast load involves a rapid transient phase, during which material breach may take place. Such an effect could play a crucial role in determining the residual state of the structure and the possible dispersion of the fragments. Modelling of the transient phase…
Abstract Reduction of bis(2-bromocyclohexenyl)diselenide, prepared from cyclohexeno-1,2,3-selenadiazole by the procedure of Meier et al., followed by reaction with cadmium chloride, yielded the novel single source Cd/Se precursor [Cd(SeC6H8Br)2], which upon thermolysis in a high boiling reaction medium formed CdSe qua…
A fast and cost-effective technique is applied for fabricating cobalt and nickel nanopillars on aluminium substrates. By applying an electrochemical process, the aluminium oxide barrier layer is removed from the pore bottom tips of nanoporous anodic alumina templates. So, cobalt and nickel nanopillars are fabricated i…
Highly ordered Ni nanotube and nanowire arrays were fabricated via electrodeposition. The Ni microstructures and the process of the formation were investigated using conventional and high-resolution transmission electron microscope. Herein, we demonstrated the systematic fabrication of Ni nanotube and nanowire arrays…