Materials Literature
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Scanning force microscopy (SFM) has been used to probe the local polarization state and piezoelectric properties of ferroelectric films. The conductive SFM tip was employed as a movable top electrode to detect the piezoresponse in the film induced by an ac voltage. Our measurements reveal a spatial dependence of the p…
The processing route of grain oriented electrical sheet was simulated by laboratory trials. Besides MnS, the effect of AIN and NbC as an inhibitor phase in 3 % silicon steel was also investigated. In the hot strip material the niobium microalloyed steel showed the highest volume fraction of the {110}<001> Goss t…
The electronic structures of undoped c ‐ and t ‐ZrO 2 were calculated by a first‐principles molecular orbital method. A preliminary analysis revealed that experimental energy‐loss near‐edge structure profiles obtained in ZrO 2 –8 mol% Y 2 O 3 could be satisfactorily explained from the present theoretical calculation.…
Antenna coupling microwave plasma enables a highly oxidative treatment of the outmost surface of polypropylene (PP) nonwoven fabric within a short time period. Subsequently, grafting copolymerization with acrylic acid (AAc) makes the plasma-treated fabric durably hydrophilic and excellent in water absorbency. With hig…
A batch of 20 diamond detectors obtained by the chemical vapour deposition (CVD) method at the Institute for Materials Research at the Limburg University, Belgium, was investigated with respect to their thermoluminescent (TL) properties. The investigated detectors demonstrate TL sensitivity similar to that of the stan…
Abstract Pure InP nanocrystals were synthesized in aqueous ammonia (potassium stearate, 0.01 mol·L−1) at 170 °C for 12 h. The X-ray diffraction pattern was of the cubic phase with lattice constant a=5.8523±5×10−4 Å. The secondary particles with 180 nm consisting of fine InP NCs with 15 nm in size were found from the t…
The determination of elastic and piezoelectric constants by means of the resonance method is described in detail in the Institute of Electrical and Electronics Engineers Standards. However, in practice, it is not easy to obtain a self-consistent complete set of elastic and piezoelectric coefficients using the resonanc…
Franckeite, approximately Pb 4.6 Ag 0.2 Sn 2.5 Fe 0.8 Sb 2 S 12.6 , consists of alternating pseudohexagonal (H) and pseudotetragonal (Q) layers. Scanning tunneling microscopy (STM) and atomic force microscopy (AFM) of freshly cleaved franckeite, from San José, Bolivia, revealed the atomic structure of the pseudohexago…
Prepregs have become accepted where performance, material qualification and product consistency are paramount requirements, as in aerospace, defence, marine, offshore, mass transit and renewable energy sectors. George Marsh reviews prepreg materials and manufacture.
Chemical adsorption and desorption of hydrogen atoms on single-walled carbon nanotubes (SWNTs) are investigated by using molecular dynamics simulations. It is found that the adsorption and desorption energy of hydrogen atoms depend on the hydrogen coverage and the diameter of the SWNTs. Hydrogen-adsorption geometry at…
AP 5280 is a novel polymer-conjugated platinum anticancer agent currently undergoing phase I clinical trials. It is pharmaceutically formulated as a lyophilized product containing 200 mg platinum per dosage unit. The aim of this study was to determine the reconstitution and dilution fluid of choice, and to investigate…
Abstract A storage study of deep‐fat‐fried banana chips was carried out for 8 weeks at ambient temperature (27 °C), using four types of packaging material: laminated aluminium foil (LAF), oriented polypropylene (OPP), polypropylene (PP) and low‐density polyethylene (LDPE). The physicochemical and sensory characteristi…
The purpose of this paper is to present the results of stress damage observation using a giant magnetoresistive sensor and a high performance measuring system. Selected digital signal processing algorithms were applied in order to enhance the obtained signals and extract parameters suitable for quantitative stress eva…
Neppiness is one of the most important aspects of cotton yarn quality and significantly influences the appearance of woven and knitted fabrics produced from that yarn. The direct sources are neps and trash contained in the cotton fiber sliver feeding the spinning frame. Nevertheless, not all neps cause yarn faults. Fo…
Isoporphyrin zinc(II) complexes can be synthesized using the MacDonald ["2+2"] approach, with suitably substituted dipyrromethanes and 5,5-dialkyldipyrromethanes. The zinc(II) complexes are stable, show characteristic optical and 1 H NMR spectra, and have been characterized as perchlorate salts by X-ray diffraction. A…
We theoretically study a single disclination motion in a thin free-standing liquid crystalline film. Backflow effects and the own dynamics of the orientational degree of freedom (bond or director angle) are taken into account. We find the orientation field and the hydrodynamic velocity distribution around the moving d…
In reactions of polyetherols prepared from hydroxymethyl derivatives of uric acid and typical oxiranes with isocyanates and water one obtains a new group of polyurethane foams containing purine rings in their structure. These polyurethanes withstand prolonged heating at temperatures as high as 200°C. Preliminary resul…
The influence of attrition milling on the thermal decomposition of kyanite (Al 2 O 3 ·SiO 2 ) to mullite (3Al 2 O 3 ·2SiO 2 ) and SiO 2 , and its subsequent sintering, was studied. A commercial kyanite was attrition‐milled for times up to 12 h. Dilatometry confirmed that as‐received unmilled kyanite decomposes between…
Abstract Two cement pastes commonly used in concrete formulations were characterized by XPS before and after coating with an epoxy resin and a hardener. The XPS allowed the surface chemistry change induced by the organic coating to be monitored. In particular, the C 1s spectra were peak fitted in order to deduce the c…
The octahedra were observed in the γ CuI crystallites synthesized by hydrothermal method using 1.6g (C2H5OO)2Cu and 2.66g KI as precursors at 200 °C for 12 hours in the de-ionized water. The effect of additives on the morphology of γ-CuI crystallites was investigated. Results show that the morphology of γ-CuI crystall…