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。
This paper addresses the power transformer design optimization problem and, proposes a regression analysis based heuristic optimization method. The main contributions of this research are: 1) introduction of a new effective optimization method which minimizes either the cost of transformer manufacturing or other objec…
An ultrathin, high energy density zinc–air cell has been developed for potential application in microsystems. The key design feature is the utilisation of an inorganic MCM-41 membrane material with three-in-one functional elements. It serves as an insulating layer between the electrodes, as ionic exchange channels and…
This paper presents a finite element (FE) model of a dual-disk rotor system with single rub-impact fault and analyzes the effects of different rotating speeds on its dynamic characteristics. The numerical simulations based on the FE model are conducted to study the rotor transverse vibrations of the rotor system. The…
Nanosize particles of barium hexaferrite were prepared by co-precipitation route using solution of iron and barium chlorides with a Fe +3 /Ba +2 molar ratio of 11. Water and a mixture of water/ethanol with volume ratio of 1:3 were used as solvents. Co-precipitated powders were calcined at various temperatures. XRD res…
Structural and Electronic Properties of Graphene upon Molecular Adsorption: DFT Comparative Analysis
Most often, OIE studies on bulk samples involve isothermal annealing of samples in oxygen (or other oxygen-containing gas) enriched with 18 isotope and measurement of www.intechopen.com
Owing to the global utillization of plastics in large quantities, their disposals as solid waste causes deleterious effect on the environment and global warming occurrence. The development of biodegradable plastics is considered to be a product innovation that can help to resolve the problems of plastic waste. The use…
Dielectric properties of thin films precipitated on solid substrates from colloidal solutions containing silicon nanoparticles (average diameter is 10 nm) are studied by optical ellipsometry and impedance-spectroscopy. In the optical region, the values of real ɛ′ and imaginary ɛ″ components of the complex permittivity…
The spontaneous self-organization of a porous surface mosaic structure in the form of islands of oxidized por-Si nanocrystallites separated by silicon ledges has been observed during prolonged anodic etching of p-Si (100) in electrolytes with an internal current source. The por-Si mosaic structure is spontaneously for…
Fibrous composites are finding more and more applications in aerospace, automotive, and naval industries. They have high stiffness and strength to weight ratio and good rating in regards to life time fatigue. Investigating mechanical behavior under dynamic loads to replace this material is very important. In the prese…
In this paper, the elastic properties of Dy modified BiFeO 3 (BDFO) multiferroic films deposited on Si substrate are reported for the first time. The mechanical properties are extracted using nanoindentation technique. The Young's modulus and hardness of the BDFO films are found to be 140 ± 3 GPa and 7.5 ± 0.3 GPa res…
This study evaluated the antibacterial effect of a visible light reactive TiO2/Ag nanocomposite thin film on dental orthodontic wire (STS 304 wire). The growth of S. mutans and A. actinomycetemcomitans was suppressed on the specimens coated with TiO2/Ag compared to the uncoated specimens. The antibacterial effect of t…
The effect of N′-(o-phenylene)dimalemide and 2,2′ dithiobis(benzothiazole) on the speed of sound, sound attenuation and loss factor, 3-D microstructure, fiber dispersion, and morphology of wood pulp-reinforced PLA composites produced by hot press was investigated. Analysis of the chemical composition and fiber length…
A composite structure made of Ag nanoparticles adsorbed on GaN nanowires were used as a Surface-Enhanced Raman Scattering (SERS) substrate. With Rhodamine 6G used as a SERS probe, high enhancement factor of 9*1011was derived. Detection limit as low as 10−12M was observed. Intensity of the SERS was correlated to the ad…
ZnO thin films with (002) orientation have been deposited on Si(100) substrate by radio frequency (RF) magnetron sputtering technique. The influence of RF power and oxygen ratio on the the grain size, the residual stress and optical properties was investigated by X-ray diffraction, transmission spectra and photolumine…
Composite nanoparticles consisting of rodlike gold particles coated by an organic layer and polymethine (cyanine) dyes of J-aggregates of different structures absorbing light in red and infrared spectrum ranges have been synthesized. It has been demonstrated that, for dyes with J-band absorption maxima in the gold pla…
Oxide dispersion strengthened (ODS) ferritic alloys of composition Fe-19Cr-0.5Y 2 O 3 have been prepared by mechanical alloying at various heat-treatment conditions to produce a range of grain sizes and dispersed oxide particle size. Fine oxide particles appear to pin grain boundaries and result in inhibition of grain…
Decapsulation of plastic integrated circuit (IC) packages with copper wire bonding is achieved by using an atmospheric pressure microwave induced plasma. A thermal model is built to estimate the bulk IC package temperature under different plasma etching conditions. Temperature measurements of the plasma effluent and I…
The effect of light scattering on the extinction spectra of organic nanocrystals was investigated by absorption and extinction measurement and by theoretical calculation for typical organic nanocrystals of α-perylene. In the extinction spectra, the exciton band shows a size-dependent redshift and tail toward longer wa…
Room temperature ferromagnetic Zn0.95Co0.05O thin films with (002) preferential orientation have been successfully deposited by pulsed laser deposition at different oxygen partial pressures on n-type (100) silicon substrate. A maximum saturation magnetization of 0.86 μB/Co was achieved at room temperature at 5 × 10−6…