Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The effect of ferroelastic coupling in ferroelectric thin films under in-plane compressive and tensile stress states was investigated under the framework of the Landau–Ginzburg–Devonshire theory coupled with microscopic examinations and characterization measurements. Piezoresponse force microscopy imaging and synchrot…
Barium-Strontium-Titanate Ba0.77Sr0.23TiO3 was prepared from starting materials BaCO3, SrCO3 and TiO2 through solid-state reactions. Mixtures of these oxides are mechanically activated in a high-energy planetary ball mill at different time intervals from 0 to 120 minutes. In order to obtain information on phase compos…
This review demonstrates the detection of protease activity based on the energy transfer of quantum dots (QDs). By incorporation of varying protease substrates into designed QD probes both in fluorescence resonance energy transfer (FRET) and bioluminescence resonance energy transfer (BRET) system, proteolytic activity…
In this review electrochemical and structural data for the electrodes made of certain of perspective materials for supercapacitors are considered. These electrodes were made on the basis of high-dispersed carbon materials. The following materials were used: singlelayer and multilayer carbon nanotubes; reduced oxide of…
Hierarchical structures, in which structure is generated and controlled simultaneously at different size scales, have attracted increasing attention due to their potentials in both theoretical research and practical applications. In this review, a non-classical mechanism is discussed for their possibilities in morphol…
In this paper, we present a novel compact left-handed material unit, which can generate the equivalent negative permittivity and negative permeability in the two-dimensional direction only by etching one side of the dielectric substrate. We propose a new formula for calculating the field and circuit to analyze the equ…
In this paper, the dielectric spectra of ZnO varistor ceramics are measured by Novocontrol wide band dielectric spectrometer in a temperature range of -160℃-200℃ and frequency range of 0.1 Hz-0.1 MHz. It is found that electron transportation can be characterized by the flat region on a low frequency side of σ'-f curve…
The present investigation was aimed to synthesize bismuth strontium manganite of composition Bi0.6Sr0.4MnO3 ceramic by low cost solid state technique. The ceramic showed orthorhombic crystal structure with micro-rod like surface morphology. The crystallite size was 34nm, with preferential orientation in (111) plane wi…
3 Abstract: The principle of space vector pulse width modulation (SVPWM) was introduced and implementing for PMSM. Applying SVPWM technique to the PMSM and obtaining the speed, torque, current responses when load was increased. The mathematical model of PMSM is analyzed by neglecting the saturation of the electric mot…
ACRYLIC POLYMERS, WHICH ARE USED AS COAT-ings binders, are comprised chiefly of esters of acrylic and methacrylic acid that are polymerized by addition polymerization, usually using a free radical mechanism: Interest in acrylic technology dates back to the 1920s when Dr. Otto Rohm developed a practical process for mak…
Hydrophobicity and the unique hydrophobicity transfer property of silicone rubber material are the basic reason why composite insulators can prevent pollution flashover.Hydrophobicity transfer property of silicone rubber material is greatly influenced by ambient humidity.To deeply investigate the problem mentioned abo…
In the present study EP142-C510-50 woven carbon fiber composite was investigated from structural/ mechanical point of view aiming manufacturing parts for aeronautical industry. The composites were obtained by hand lay-up process. Prior to mechanical tests, the cure reaction results of composite resins specimens were a…
A B ST R A C T Corrosion on SS-304 in brackish environment. Any compound capable of donating free chlorine ions (Cl -) to an aqueous (water-based) solution has the potential for causing failure in stainless steels. The chlorine ion is extremely electronegative, therefore very reactive with certain compounds and elemen…
The parabola-bearing shells of the Callovian ammonite Indosphinctes (Elatmites) submutatus Nikitin from Ryazan Region, Central Russia, are examined using morphological, ultrastructural and chemical approaches to clarify the functional significance of the parabola.The parabolae are missing in the embryonic shell that i…
Core-shell fibres of semi-crystalline poly(L-lactic acid) (PLLA) (core) and amorphous poly(D,L-lactic acid) (PDLLA) (shell) were produced through the coaxial electrospinning of two miscible solutions. Due to the poor contrast between the PDLLA and PLLA, the core-shell structure of the resulting fibres could not be elu…
Copper wiring formation on a resin material with a low dielectric constant, a low dielectric loss and a smooth surface is indispensable to realize high-frequency signal propagation with fine wiring patterns. Cycloolefin polymer (COP) resin is a promising material to meet these requirements. We propose adhesive copper…
A number of new p-tert-butylthiacalix [4]arene derivatives in the cone and 1,3-alternate configuration, containing binding sites for alkali metal cations and the phthalimide group were synthesized. The complexation properties of the synthesized macrocycles with alkali metals and silver cations were studied by picrate…
The thermal pyrolysis behaviour of a complex of β-cyclodextrin (CD) and potassium ferrioxalate (PF) was analyzed using gas chromatography coupled to time-of-flight mass spectrometry. Two rare inorganic ions: CO(2)(2+) and O(4)(+), neither of which was found in the cases of free β-CD and PF, were synchronously observed…
Electromagnetic (EM) eigen modes in a fishnet metamaterial (MM) slab have been comprehensively analyzed in an experimental configuration, based only on precise solutions of Maxwell equations. The EM eigen modes were directly detected from light-absorption peaks. Each mode was explicitly characterized by the dispersion…
The band structure, density of states, bond length and Mulliken charge population of barium hafnate titanate (BHT) with different Hf contents were studied by first-principle calculation. It is found that the band gaps increases at first and then decreases as the Hf content gradually increases from 0 to 50%. There resp…