Materials Literature
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The desired result of magnetic anisotropy investigations is the determination of value(s) of various anisotropy constant(s). This is sometimes difficult, especially when the precise knowledge of saturation magnetization is required, as it happens in ferromagnetic resonance (FMR) studies. In such cases we usually resor…
采用“配位-氧化聚合-水热法”制备了本征态聚苯胺/CoFe 2 O 4 二元纳米复合物，再以磺基水杨酸掺杂获得聚苯胺/CoFe 2 O 4 电磁复合物. 考察了反应物配比及掺杂酸浓度对产物电磁性能的影响. 通过透射电子显微镜（TEM）、X射线衍射（XRD）、红外光谱（FTIR）及电磁测量等手段对聚苯胺/CoFe 2 O 4 的形貌、结构及性能进行了表征. 结果表明，复合物呈现多级结构，其中CoFe 2 O 4 为立方体状，平均粒径小于20 nm. 当CoFe 2 O 4 的质量分数为8.86%时，复合物的电导率约为0.43 S/cm；当聚苯胺/CoFe 2 O 4 复合物厚度为2 mm时，在16.01 GHz处最大反射损耗为-16…
The motion of colloids in the flow field of a viscous liquid is investigated. The small colloid size compare to the macroscopical scale of the flow allow to calculate their velocity relative to that of the liquid. If the inner colloid density is larger then the density of the liquid the flow field has the domains wher…
The use of polymer composites in various tribomechanical situations has become more popular nowadays. The paper reviews the research done in the area of investigation of the mechanical and tribological properties of the polymer composite material. The present overview describes some of the researchers’ approaches to d…
This summary report examines an in-vessel optical access concept intended to support standoff optical instrumentation, control and human-machine interface (ICHMI) systems for future advanced small modular reactor (AdvSMR) applications. Optical-based measurement and sensing systems for AdvSMR applications have several…
Detection and manipulation of electrons' spins are key prerequisites for spin-based electronics or spintronics. This is usually achieved by contacting ferromagnets with metals or semiconductors, in which the relaxation of spins due to spin-orbit coupling limits both the efficiency and the length scale. In topological…
Deformation twinning is generally considered to be the primary mechanism for hexagonal close-packed (hcp) metals due to their limited slip systems. Recent microcompression experiments on hcp metals point to intriguing strong size effects on twinning mechanisms, indicating that pyramidal slips dominate compression.In t…
The purpose was to characterize the surfaces morphology and the superficial chemical composition of related osseointegrable implant systems. The evaluated samples presented characteristics of superficial roughness except for Externo Laser® implants, having Titamax® and Implant External Hex® implants presented roughnes…
Hydrogen production through steam reforming of ethanol (SRE) over the Ca-modified Co/SBA-15 catalysts was studied herein to evaluate the catalytic activity, stability and the behavior of coke deposition. The Ca-modified SBA-15 supports were prepared from the Ca(NO3)2·4H2O (10 wt%) which was incorporated to SBA-15 by i…
The conjugation of gold nanoparticles (GNPs) with magnetite nanoparticles is achieved in a two step process in which the initial step is a self-assembled monolayer of mercaptoundecanol on conjugation to GNPs by reducing HAuCl4 to obtain wine color suspension of hydroxyl capped GNPs. The reaction is further proceeded w…
This study examines the effect of adding magnesium (Mg) at C60/rubrene heterointerfaces by using synchrotron-radiation photoemission spectroscopy. The heterointerface was obtained by depositing C60 on a 4-Å Mg/rubrene surface. The photoemission spectra showed that the added Mg preferentially interacts with and transfe…
The experiment of making fishsource using a TTX-bearing puffer Toquigener gloerfelti as a material was conducted during 12 months in order to observe a trend of toxicity in the fishsource product. The result showed that toxicity had been decreased by time and after 12 months; about 86.43 - 93.93 % of initial toxicity…
The authors have demonstrated the feasibility and principle of utilizing silica nanospheres (SNSs) as a pattern for selective area growth of metamorphic InP on GaAs(001) substrate. SNSs with the average diameter of ∼460 nm were uniformly and closely distributed on GaAs by spin-coating. The hexagonal array of the SNSs…
In this paper, a fully Lagrangian method namely as Smoothed Particle Hydrodynamics (SPH) has been utilized in order to simulate the response of reinforced concrete beam subjected to low velocity impact loading. Models based on this method are proposed to capture an important failure mechanism on compression and tensio…
We propose a lattice statistical model to investigate the phase diagrams and the soft responses of nematic liquid-crystal elastomers. Using suitably scaled infinite-range interactions, we obtain exact self-consistent equations for the tensor components of the nematic order parameter in terms of temperature, the distor…
We construct an infinite family {Cay→(Gi;ai;bi)} of connected, 2 -generated Cayley digraphs that do not have hamiltonian paths, such that the orders of the generators ai and bi are unbounded. We also prove that if G is any finite group with |[G,G]|≤3 , then every connected Cayley digraph on G has a hamiltonian path (b…
The phase behaviors of binary blends of poly(styrene-b-butadiene) block copolymers were investigated by a small-angle X-ray scattering technique. The blends were composed of weakly segregated one in a random micellar phase and the other in a cylindrical phase with similar molecular weights and complementary volume fra…
Piezoelectric polymer, poly (vinylidene fluoride), PVDF is a widely used fluorocarbon polymer with varied range of applications. PVDF is known to exhibits scientifically interesting and technologically important electrical properties due to their polar structure. When it is subjected to mechanical deformation, it beco…
Novel X-type polyurethane 4 containing 4-(4-nitrophenylazo)-6-nitroresorcinoxy groups as nonlinear optical (NLO) chromophores, which are parts of the polymer main chains, was prepared and characterized. Polyurethane 4 is soluble in common organic solvents such as acetone and N,N-dimethylformamide. It shows thermal sta…
ZnO films were deposited onto glass, ITO coated glass, and sapphire substrate by spray pyrolysis, and subsequently annealed at the same temperature of 400°C for 3 h. The role of substrate on the properties of ZnO films was investigated. The structural and optical properties of the films were investigated by X-ray diff…