Materials Literature
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Experimental studies on operating a marine diesel engine to determine the performance map under different working conditions need to consume a lot of money and labor. To solve this problem, a mathematical model based on Artificial Neural Networks (ANNs) combined genetic algorithms (GA) to predicate the performance emi…
The centre Au-doped armchair graphene nanoribbons (AGNRs) are investigated using the local density approximation based on density function theory. The charge density, electronic energy band and project density of states of centre Au-doped AGNRs are calculated. Our results indicate the charge density is transferred bet…
We report the effect of diameter on the composition, optical, and electronic properties of the BiFeO3(BFO) nanofibers. Bismuth ferrite nanofibers with different diameter (20 to 150nm) have been fabricated by a sol gel based electrospinning route. The effect of quantum confinement has been found to influence the photoc…
We have established a set of useful constraints that should be verified by thin metasurfaces made of perfect electric conductor. Mainly, we found that loci of transmission and reflection coefficients on the complex plane are circumferences. The properties shown in this paper may be useful for limiting the types of rea…
A new class of tunable multi-layer meta-surfaces is presented whereby the proposed structures produce very low losses at millimeter wave frequencies. Two configurations are investigated as working examples of the proposed tuning technique. Initially, a tunable high impedance meta-surface is being studied, consisting o…
In article number 1400226, Shiyou Zheng, Junhe Yang, and co-workers report a novel, in situ, sulfur-reducing and intercalating graphite oxide strategy to fabricate a high S loading graphite-S composite cathode with superior electrochemical performance. The reduced graphite oxide can effectively stabilize the intercala…
K9 optical glass was widely used in national defense and civilian fields. In this paper, chemo-mechanical grinding (CMG) was applied to process the K9 optical glass. Selecting CeO2, MgO and Fe2O3as CMG abrasives, the corresponding CMG tools were purposely developed for the check experiment. High surface and subsurface…
SiO2 is a good performance of high temperature wave-transparent materials, but the impact of the material properties of the components of the wave through it there are some drawbacks. This study intended to determine the theoretical dielectric properties of this material. Based on Debye theory, describes the dielectri…
This paper introduces three kinds of hybrid excitation claw pole motor structure: Permanent magnet (PM) placed in the yoke (Model a), PM placed outer surface of the claw (Model b), PM between the claw (Model c).It analyze three kinds of claw pole motor on magnetic circuit and structure, then calculate electromagnetic…
In the paper are investigated the eigenfrequencies of single-walled carbon nanotubes (SWCNTs) by the analytical method based on nonlocal theory of beam bending. A continuum approach is applied for eigenfrequency computation of SWCNTs with four types of beam end conditions: clamped-free (C-F), simply-simply supported (…
Many people worldwide assess themselves as having halitosis, often caused by bio-film and microbial putrefaction of the debris in the mouth, leading to the production of mal-odorous compounds, volatile sulfur compounds (VSC) such as hydrogen sulfide (H2S), methyl mercaptan and dimethyl sulfide. Some desulfurizing agen…
The heat transfer along a finite polyethylene macromolecule with fixed ends has been simulated. It has been shown that the thermal flux arising in the chain essentially depends on the distance between its ends. The thermal flux along the chain increases due to its stretching and decreases when its ends become closer t…
When high-power Permanent Magnet Synchronous Motor (PMSM) is operating with large stator current and high rotating speed there will be large amount of harmonics component in stator winding and deduce significant eddy current loss in rotor magnet. A detailed analytical method was proposed which calculated the eddy curr…
Takayoshi Kishida, Merry Koschan, Mariya Zhuravleva, Charles L Melcher, Gerd Duscher, Matthew F Chisholm; Anti-Site Defects in Perovskite YAlO3:Ce Using Ab
The experimental and theoretical studies of the emission characteristics of a multiple-tip cathode matrix made of glassy carbon are discussed. The thermal conditions of microtips are calculated based on the experimental current-voltage characteristics of a cathode matrix and the effective emission cross sections. The…
We demonstrated a carrier-injection refractive index change (Δn) in low-temperature (-4was observed at an applied voltage of 20V.
The article deals with assessing the impact of the heat flux on the flammability of wood materials with application of fire retardants potassium hydrogen carbonate (KHCO3) and azanium dihydrogen phosphate (NH4H2PO4), which can limit or slow down the combustion of the material. After application of fire retardants on s…
In the semiconductor manufacturing environment it is very important to understand which factors have the most impact on process outcomes and to control them accordingly. This is usually achieved through design of experiments at process start-up and long term observation of production. As such it relies heavily on the…
The composites were obtained by the Bridgman method through solidication of Al61Cu27Fe12 alloy (numbers indicate at.%). The microstructure of composites with crystal matrix and quasicrystal reinforcement was studied. The crystalline -phase was the matrix and the quasicrystaline i-phase was the reinforcement of obtaine…
Infrared detectors for the long-wave infrared range (LWIR) based on nano structured thermocouples exhibit response times in the order of picoseconds and will open new areas of applications in THz broadband communication systems. We investigate the thermal dynamics of nano-thermocouples for a substrate heated by a nano…