Materials Literature
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In order to adequately simulate the behavior of a Hall–Héroult electrolysis cell, a finite element model must take into account the properties of each material forming the cell structure and those contained in it. However, there is some lack of full knowledge of the mechanical behavior of these materials, e.g., the lo…
Preparation, crystal structure, and infra-red absorption spectra are reported for the first material in an A2BX4 compound with metal transition substitution in tetrahedral anion, tetramethylammonium tetrachlorozincate tetrachlorocuprate: [(CH3)4N]2Zn0.5Cu0.5Cl4. The calorimetric study shows five endothermic peaks at 2…
Most of electric insulation materials used in power generation and energy storage are polymeric dielectric materials: winding insulations in power transformers, electric starter/generators, electric actuators, high frequency resonators, and power converters; dielectric films in power capacitors or energy storage devic…
Environment directly affects human health. The literature firstly introduces the distributed energy resource and its category. Five systems, including three natural gas micro-turbine systems, one Phosphoric Acid Fuel Cell combined heat and power system and one Proton Exchange Membrane Fuel Cell system are taken as the…
In this paper, the effect of applying a thin mu-varistor material layer to composite insulator structure is presented for the rain test. In the finite-element-method (FEM) simulations, thin resistive layers are modeled as 2D surfaces instead of 3D volume bodies which helps to avoid problems within the geometric modeli…
A new effect is described of the combined action of an electric field and light on the slow surface dynamics in a layer of nematic liquid crystal (NLC) contacted with a layer of dye pre‐treated by UV irradiation. Simultaneous application of a relatively weak “in‐plane” electric field and polarised light resulted in sl…
Based on previous researches and personal data on diatom movements, the author proposes a hypothesis which combines two main ideas: propulsion by microfibrils on the one hand and by mucilage (mucus) on the other hand. After crossing the raphe, the tiny fibrils would be pushed out the diatom by the mucus and execute on…
Relaxor/ferroelectric superlattice (SL) films Pb(Sc1/2Nb1/2)O3(PSN)/PbTiO3(PT) with nine different PT concentrations x are fabricated by a pulsed laser deposition method, which keeps the total film thickness at 100 nm. The structure of the SL films is examined by out-of-plane and in-plane x-ray diffractions. All films…
The effect of shear stress on the EPS secretion was investigated in a suspended carrier biofilm reactor. A sudden increase of shear stress on the biofilm enhanced the EPS- polysaccharides secretion after an acclimation period. However, as the biofilm's structure reestablished and reached a steady state again, the EPS-…
Si 2 N 2 O/BN composites were successfully fabricated. With increasing BN content, the elastic modulus and hardness almost linearly decrease while the flexural strength does not exhibit a dramatic degradation. This is attributed to the fact that the homogeneously dispersed nanosized BN particles inhibit the grain grow…
Quantum dots (QDs) are nanoscale inorganic particles generally composed of II-VI and III-V elements. Recently, QDs have received great interest in biological applications because of their unique and fascinating optical properties. In this short review, we introduce the synthesis of luminescent QDs in the aqueous phase…
Abstract Summary: The deposition and the nanostructure of polyelectrolyte multilayers (PEM) of branched poly(ethyleneimine)/poly(acrylic acid) (PEI/PAC) was studied in dependence of the adsorption time (t ADS ) of the individual steps. PEM were reproducibly deposited applying up to z = 20 adsorption steps at the fixed…
TiO 2-δ nanoparticles are synthesized by the sol-gel method and annealed under different reducing atmosphere. The x-ray diffraction patterns show that anatase is the dominant phase with small amounts of the rutile phase of TiO 2-δ for all the samples. Magnetic measurements indicate that the samples annealed in reducin…
New eco-composites were prepared from castor oil polyurethane reinforced with Luffa cylindrica fibres. These fibres were used without treatment as well as after mercerisation and mercerisation/benzylation surface treatments. TG curves of mercerised Luffa showed a small increase in thermal stability, associated with th…
Mn(x)Zn(1-x)Fe(2)O(4)-based magnetic fluids with x = 0.1-0.9 are synthesized by coprecipitation. The samples are heated in a radio frequency (rf) magnetic field using an rf generator at different powers, and the temperature is measured as function of time using an optical thermometer. The heating effect of the dispers…
The field emission (FE) properties of ZnO and NiO-coated ZnO (NiO∕ZnO) nanorods are investigated under vacuum of 7×10−7Torr and oxygen rich vacuum of 1×10−5Torr. The ZnO nanorods were synthesized on a Si(100) substrate by metal-organic chemical vapor deposition, and the NiO film with the thickness of ∼15nm was coated…
Single-crystalline cooperite (PtS) with a nearly stoichiometric composition was characterized in detail by X-ray diffraction, electron-probe X-ray microanalysis, and high-resolution scanning electron microscopy. For the first time it was demonstrated that 195Pt static and MAS NMR spectroscopy can be used for studying…
The geometrical property of an atomic structure model of the Yb–Cd icosahedral quasicrystal is discussed from the higher-dimensional viewpoint. An occupation domain for the framework that specifies the arrangement of the three building units of the structure is presented based on a specific archetype occupation domain…
Abstract Summary: A novel combinatorial, high‐throughput experimentation (HTE) setup has been developed, which allows for rapid mapping of the phase behavior of blends of homopolymers and block copolymers. The principle is based on the preparation of composition ( ϕ )‐temperature (T) gradient films. Linear ϕ gradients…
Abstract New optical rewritable (ORW) electronic paper is the joint result of advanced photoalignment of liquid crystals, optical engineering and flexible LCD technologies. We report improvement of both dark and bright states of reflective ORW e‐paper by doping LC with fluorescent dye, which absorb blue light & em…