Materials Literature
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Recent experimental and theoretical studies have demonstrated that relative to singly tethered chains, the presence of polymer loops at interfaces significantly improves interfacial properties such as adhesion, friction, and wettability. In the present study, a simple system was studied to examine the formation of pol…
This paper describes an investigation into the shape memory effects in engineering polymers, and their possible use in active fasteners. Characterisation of the shape memory effects in engineering polymers by tensile and bending shape recovery tests is described. A study of the long-term reliability of the shape memor…
Liquid phase sintering based on the dissolution-precipitation mechanism was applied to densify a 0.8 micrometer SiC powder with alumina (1.2 vol%)-yttria (0.9-3.3 vol%) additives. To uniformly distribute the sintering additives around the SiC particles, a heterocoagulated particle network was formed among negatively c…
This experiment teaches students the methodology of investigating novel properties of materials using new instrumental techniques: atomic force microscopy (AFM), electrochemical quartz crystal nanobalance (EQCN), voltammetric techniques (linear potential scan and chronoamperometry), and light reflectance measurements.…
Diamond is a semiconductor with many superior material properties such as high breakdown field, high saturation velocity, high carrier mobilities and the highest thermal conductivity of all materials. These extreme properties compared to other (wide bandgap) semiconductors make it desirable to develop single-crystalli…
Abstract The sections in this article are Introduction General Principles Governing Precipitation from Solutions Physico‐Chemical Considerations Chemical Considerations Process Considerations Influencing the Properties of the Final Product Influence of Raw Materials Influence of Concentration and Composition Solvent E…
Study of the interaction between gold nanoparticles and a series of amino acids is reported in this paper. Amino acids with thiol, amine, or hydroxyl groups in their side chains are proven to make gold nanoparticles self-assemble under certain conditions. There is a progression of the effect on self-assembly of gold n…
Based on the continuity conditions at the interface on both sides,of which the pressures and velocities must be equal,the initial shock wave parameters of the medium surrounding a charge are given by calculating the equations valid for reflected wave in detonation products and the equations valid for shock wave in med…
A (BCG) layer was grown between (GDC) layers. This was accomplished by a solid-state reaction of a BaO layer with the GDC layer. In the multilayered GDC/BCG/GDC electrolyte film, all layers showed dense and homogeneous junction structure. When a hydrogen–air fuel cell with the multilayered electrolyte cell was tested…
Temperatures of exterior surfaces are affected by various heat fluxes. Beside the heat fluxes due to heat conduction through the building component and heat convection from the surrounding air, radiation effects are important as well. Usually only the short-wave radiation heating up the component’s surface during the…
Received: 2/Jun/2007, Accepted: 31/Jan/2008 Objective: Investigation of the suitability of electrospun Poly (e-caprolactone) (PCL) nanofiber scaffold for the Vero cell culture. Materials and Methods: Electrospinning was used for production of PCL nanofibers scaffolds. Scanning electron microscopy (SEM), MTT assay, hem…
Purpose: The favourable properties of magnesium account for the fact that it is applied not only in cast structural components but also in those subjected to plastic working. Currently, intensive works are conducted to optimize the processes of plastic working of these alloys The following work concentrates on the ana…
Previous experimental studies have shown that addition of smallamounts of oxygen to a hydrocarbon fuel stream can controlcoking in the anode, while relatively large amounts of oxygenare present in the fuel stream in single-chamber SOFCs. Inorder to rationally design an anode for such use, it isimportant to understand…
The solubility of paracetamol in water-ethanol-propylene glycol binary and ternary mixtures at 25 and 30 degrees C was determined using flask shake method. The generated data extended the solubility database for further computational investigations and also was used to assess the prediction capability of the Jouyban-A…
This paper presents investigations into the wetting phenomenon of terry fabrics. Terry fabrics were manufactured using linen warp pile yarns. The high absorption ability of terry textile is acquired by increasing the capability of the moisture absorbing surface to retain liquid in its pores and internal pores of the t…
Abstract In recent years, tetrathiafulvalene (TTF) and its derivatives have been used as semiconducting materials for organic field-effect transistors (OFETs). In this review, we summarize the recent progress in the field of TTF-based OFETs. We introduce the structure and operation of OFETs, and focus on TTF derivativ…
AbstrAct Purpose: The aim of this work was to improve the surface layer cast magnesium alloy EN-MCMgAl6Zn1 by laser surface treatment. The purpose of this work was also to determine the laser treatment parameter. Design/methodology/approach: The laser treatment of an EN-MCMgAl6Zn1 magnesium alloy with alloying WC and…
A metallic particle appeared in a gas insulated switchgear (GIS) sometimes adheres on a solid spacer surface. If the adhered metallic particle is exposed to a surge high voltage, a breakdown (BD) may be induced. Therefore, it is eagerly demanded to diagnose its risk correctly under the service voltage by partial disch…
Mesoporous silica nanoparticles with a two-dimensional center-rectangular (plane group c2mm) lattice and coiled elliptical channels have been synthesized; the new synthetic route also allows simple control over the lattice dimensions and the elliptical shape of the channels.
With four case studies (dry-type transformer, power transformer, GIS, generator) this paper describes the principle of synchronous multi-channel PD measurements and its benefits for PD data evaluation. With respect to monitoring the tracing of a charge value as QIEC over the measuring time is not sufficient to assess…