Materials Literature
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Three-dimensional printing of viscoelastic inks is demonstrated by E. B. Duoss, C. M. Spadaccini, T. S. Wilson, and co-workers on page 4905. This technique is shown to create porous, elastomeric architectures with highly controlled mechanical properties, exhibiting markedly distinct load responses with directionally d…
Scanning tunneling microscopy studies have revealed a periodic step-terrace structure in the (100) surface of the AgInYb 1/1 cubic approximant. The step height between the large terraces is about 0.73 nm, approximately one-half of the lattice constant, which is consistent with the bcc-like crystalline structure of thi…
This paper investigated the anti-penetration performance of different sandwich structures plate using numerical simulation method. Finite elements models of the bullet and sandwich plate were established. The penetration performance of sandwich plate by bullet was simulated by software of LS-DYNA and dynamic response…
Compressive residual stresses and high hardness introduced by induction quenching are often used to improve the mechanical performance of crankshafts in engines. In this paper, in order to predict the fatigue strength of the crankshafts in a diesel engine accurately, the quenching process and the stress fields of the…
This work aimed the obtainment of a neutral atomic jet departing from a plume generated by laser ablation of copper targets. A pair of electrodes together with a transducer pressure sensor was used to study the ablated plume charge composition and also to measure the ion extraction from the plasma plume. The neutral b…
A crossed dipole antenna is incorporated with an AMC surface to achieve low-profile and broadband characteristics. Interactions between the crossed dipole and the AMC surface are meticulously considered for optimum design. The antenna yields an impedance bandwidth of 18.8% for |S11| <; -10 dB and a 3-dB AR bandwidth o…
In a previous work researchers found that fluorinated acrylate (PHFDA)/styrene (PSt)/ sulfonated styrene (S) copolymer can enhance the viscosity of carbon dioxide (CO2) by factors greater than 100 at concentrations of 5 wt %. To further improve the efficiency of this copolymer, we apply the dissipative particle dynami…
Effective separation of hexaphenylbenzene from n-heptane is demonstrated on page 4729 by A. G. Livingston and co-workers. Ultrathin and free-standing polymer films with intrinsic microporosity (PIM-1) are precisely fabricated on porous substrates. The organic solvent nanofiltration performance with exceptionally fast…
Cellular material such as aluminium foam has been considered as a potential material for energy absorption upon impact and blast loadings. One of the most important properties that contribute to this feature is the densification strain. At high impact velocity, prediction of the densification strain from quasi-static…
As-received desert sand from a Middle East country has been characterized for its phase composition and thermal stability. X-ray diffraction analysis showed the presence of quartz (SiO2), calcite (CaCO3), gypsum (CaSO4.2H2O), and NaAlSi3O8 phases in as-received desert sand and showed weight loss of approx. 35 percent…
Oat β-D glucan was treated with 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride (10%, 20%, 30%, or 50% of beta glucan) to obtain a range of cationic β-D glucan samples. The derivatization was confirmed by the results of Fourier transform infrared (FTIR) tests and elemental analysis. Addition of 1% cationic β-D gl…
PbS/PbI2 nanocomposites were prepared by choosing K[PbI3] as both a lead salt and an iodide precursor and acetone/water as a reaction medium. It was found that the amount of the PbI2 component could be controlled, to some extent, by varying the amount of water used. Further, this simple bicomponent precursor-based syn…
For the improvement of a commercially available photo ionization detector (PID) with respect to its gas selectivity and sensitivity, a thin emitter film (≈ 20nm) of lanthanum hexaboride (LaB6) was integrated performing the gas detection by photo emitted electrons. To confirm the chosen emitter material's suitability a…
Polyamide 6 has been widely used in food packaging applications and also green tea contains amounts of antioxidant compounds. The aim of this study was investigation of green tea effects on properties of polyamide packaging polymer. Polyamide 6 was dissolved in methanol which was saturated with calcium chloride. The a…
Experimental data for the formation sequence of reverted austenite morphologies in the temperature interval of the reverse α → γ transformation in Fe-Ni metastable alloys are analyzed. Emphasis is on the mechanism behind the formation of extended crystals of a new phase, which arise in the middle of the reverse α → γ…
Thermal and X-ray phase analyses, IR spectroscopy, and the method of low-temperature adsorption of nitrogen were used to study the phase composition of gibbsite and its effect on the specific surface are of coarse floccules of products obtained in dehydration of gibbsite upon its thermal treatment at 250–600°C in air.…
An outer-rotor-type switched reluctance generator (SRG) applied in small wind power generation system is designed in this paper. The formulas using in the design process are given. The finite element method (FEM) is used to optimize the structure, choose the laminated material and analyze the magnetic performance of t…
The combination of both infrared and Raman spectroscopy are powerful tools to obtain information of catalytic materials at a molecular level. The present investigation shows, a systematic study “in situ” about the effects of the temperature in the molecular structure of the supported phosphotungstic Wells-Dawson heter…
The predictive capabilities of plate and shell theories greatly depend on their underlying kinematic assumptions. In this study, we develop a Cosserat-type elastic plate theory which accounts for rotations around the normal to the mid-surface plane (so-called drilling rotations). Internal loads, equilibrium equations,…
A nylon 6 nanofibre web was deposited on the surface of cotton fabrics using the electrospinning process. The prepared nylon 6 nanofibre‐modified cotton fabric showed remarkable hydrophobic and flame‐retardant properties. The morphology of nylon 6 nanofibres was examined by scanning electron microscopy and transmissio…