Materials Literature
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Ferroelectrets are flexible and conformable polymer transducer materials with a dominant longitudinal piezoelectric effect. They can be used in a wide range of transient pressure sensing applications. We present concepts for thin, flexible ferroelectret-keyboards (and advanced pressure sensors) based on ternary coded…
The water absorptions behaviors of the okra fibers, which are available in north east India, were studied under ambient, annealed, bleached and mercerized conditions by using ordinary gravimetric absorption method. The gains in moisture content in the fibers due to water absorption as well as their capillarity at cons…
The porous structure of two laboratory samples of hypercrosslinked polystyrene networks with a crosslinking degree of 200%, the commercial hypercrosslinked sorbent MN-270 (Purolite Int.), and macroporous polystyrene sorbents Amberlite XAD-4 and Amberlite XAD-1600 were investigated by means of 1 H NMR cryoporosimetry.…
We have studied the adsorption reaction of dimethyl sulfide (DMS) on the Rh-polyvinylpyrrolidone (Rh(PVP)) nanoparticles by using AFM, XPS and NEXAFS techniques. The AFM images show the morphology of the Rh(PVP) nanoparticles depends on the amount of them. The XPS results indicate that the dissociation reaction of DMS…
Thick and thin films of trans‐polyisoprene (TPI) have been prepared using solution casting method by dissolving TPI in toluene. Thick films of TPI have been used to determine thermal transport properties at different temperatures through Thermal Constant Analyzer (TCA). The results show that thermal conductivity, ther…
Laser formation of a protective zinc oxide layer on a surface of products from copper alloys is present. This layer is formed with using of carbon nanotubes. Destructions of the basic material are avoided or minimized at laser nanostructuring of product surfaces. Such laser processing can be made repeatedly. Offered c…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation L. M. Thu, O. Voskoboynikov; Simulation of an Asymmetrical Nano Ring by Mapping of the Realistic…
The paper describes a new comprehensive Markov model of deterioration of the pipeline residual strength as related to its ability to withstand the inner pressure due to defects growth, and its implementation when designing the pipeline integrity management program (IMP). This Markov model is designed for defects that…
To study the effect of B2O3 and P2O5 on fluorosilicic mica glass-ceramic sintering process, six sets of K2O-MgO-SiO2-F glasses were prepared by using B2O3 and P2O5 as sintering aid, respectively. Green bodies of the glass powder were formed by gel casting and sintered at 800, 850, 900, 950, 1000oC for 6 hours, resecti…
静的曲げヤング係数（MOE）の等しい10プライのスギ同等級構成集成材及び異樹種異等級構成集成材（内層にスギを，最外層にヒノキもしくはカラマツを配置）を作製し，ラミナの樹種及び動的ヤング係数（Efr）の違いがせん断強度に及ぼす影響を調査した。スギ同等級構成集成材と異樹種異等級構成集成材のせん断強度の間に有意な差は認められなかった。また，スギ材のせん断強度は，製材が本来有する樹種特性・強度性能に起因し，集成化に伴い大きく変動しないことが示唆された。なお，集成材のEfrやMOEとせん断強度の間に有意な相関関係は認められず，ラミナのヤング係数は，集成材のせん断強度に影響を及ぼさないことが示唆された。そして，集成材のせん断強度性能は，ラミナ…
The magnesium oxysulfate whisker/ABS composites were prepared by making the magnesium oxysulfate whisker as dispersed phase.Scaning electron microscope(SEM) was used to test the distribution of whiskers in ABS matrix.Effect of the surface modification and the amount of whiskers to the mechanical properties of composit…
Fe-Cu-C sintered steels are widely used for automobile parts. However, low-cost Cu free general-purpose sintered steels are also required from the viewpoint of recycling because Cu in steels deteriorates their properties. In this study, Mn and Si were selected as new strengthening elements to replace Cu and the effect…
Mixed oxides with the perovskite-like structure, possessing mixed electronic and ionic electrical conductivities, are proposed for dense ceramic membranes production for both oxygen separation and oxy-combustion processes. In the study three perovskite-type mixed oxides La0.6Sr0.4Fe0.8Co0.2O3+� (LSCF), Ba0.5Sr0.5Co0.8…
In this paper we present some results regarding undoped and doped ZnO thin films deposited on various substrates like glass, silicon and kapton by rf magnetron sputtering. The influence of the amount of aluminum as well as the usage of different substrates on the final photovoltaic properties of the thin films is stud…
ZnO thin films were fabricated by the sol‐gel method using Zn(CH3COO)2.2H2O (zinc acetate) as starting material. A homogenous and stable solution was prepared by dissolving the zinc acetate in a solution of ethanol and ethanolamine. Deposition of ZnO solution on Si substrate was performed by spin‐coating technique and…
M‐type Barium Magnesium hexaferrite with the composition BaMg2Fe10O19 was successfully prepared with and without surfactant by using a citrate precursor route. The obtained precursors were calcined at various temperatures. The crystalline structure, phase analysis and particle size were investigated by using X‐ray dif…
Temperature-dependent μ-photoluminescence of self-trapped exciton (STE)-based radiation in Si nanocrystals (Si-nc's) with sizes enlarging from 2.3 to 4.5 nm is demonstrated, while the monotonically decreasing trend of the STE activation energy (from 1.75 to 1.2 meV) with Si-nc size-dependent dielectric permittivity is…
It is shown that the nonexchange sorption of phenylalanine on dissimilar anion exchangers occurs by the same mechanism, determined by the structure of the amino acid, while the absorbed amount of substance depends on the sorbent structure. It is established that the micelle formation and the phenylalanineanion exchang…
A self-assembled monolayer (SAM) technique was employed to produce carbonate apatite (CA) coatings onto Ti substrates after sulfonation. The Ti substrates thus treated (S-SAM-Ti) were immersed in metastable calcium phosphate solutions containing carbonate to induce precipitation of carbonate apatite on the surface. Th…
Several methods have been developed for producing high-porosity open-cell metal foams, but no method is available for producing closed-cell type metal foams with a porosity of more than 95 %. We therefore developed a novel process for producing a high-porosity closed-cell metal foam using a hydro-gel binder. This proc…