Materials Literature
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With the United States rethinking its strategy for the management and disposal of defense high-level radioactive waste and civilian used nuclear fuel (UNF), it is an opportune time to evaluate the near-term and long-term options and requirements for the U.S. geologic repository program. In this paper, we outline a res…
With the rapid development of nanotechnology and increasingly broad bio-application of engineered nanomaterials, their biohazards have become a serious public concern. It is believed that the chemical nature, particle size, morphology, and surface chemistry of nanomaterials are key parameters that influence their toxi…
The free radical copolymerization of acrylonitrile (AN) with itaconic acid (IA) in dimethylsulfoxide (DMSO) initiated by azobisisobutyronitrile (AIBN) has been found to be chemically controlled even at high conversion. In order to explain this specific finding by Walling's kinetic model, a detailed study on the monome…
The SCR catalysts were produced with V2O5, WO3, MoO3 and anatase type TiO2. The thermo stability of the catalyst with different MoO3 loading was analyzed with TG-DTG. And the SO2 oxidations were researched with a fixed bed reactor under simulated exhaust gas. The different loadings of MoO3 did not effect on the thermo…
The rapid solidification processes of Ca50Mg20Cu30 liquid alloy have been simulated by first principle molecular dynamics simulation based on the density functional theory. The local structural evolution of the alloy is analysed using Honeycutt Andersen (HA) bond-type index and bond-angle distribution methods. The ele…
Inspired by a recently observed asymmetry in the transmission of circularly polarized light through a metamaterial, we present a non-Hermitian -symmetric quantum model to describe the interaction of the light fields in two resonant cavities coupled via a 2 D -chiral mirror. We compute the time evolution of the light f…
Ao longo dos últimos anos, diversos trabalhos têm sido desenvolvidos a fim de se modelar quantitativamente o efeito GMI (Magnetoimpedância Gigante). No entanto, esses modelos adotam simplificações que afetam significativamente seu desempenho teórico-experimental e sua generalidade, e ainda são raros os modelos quantit…
Polyamide 6/Poly(lactic acid) (PA6/PLA) blends introduce the degradability of PLA to high performance PA6, but the bad toughness of both PA6 and PLA limits the application of blends. Aiming at this deficiency, thermoplastic polyurethane (TPU) was used as an additive for modifying the toughness of PA6/PLA blends. PA6/P…
The complex impedance of the bis(2-amino-6-methylpyridine) tetrachloridozincate compound (C6H9N2)2ZnCl4 has been investigated in the temperature range 313–403 K and in the frequency range 200 Hz–5 MHz. The impedance plots show semicircle arcs at different temperatures and an electrical equivalent circuit has been prop…
Carbon nanotube/polysulfonamide (CNT/PSA) composite spinning solutions with different CNTs contents were prepared using the physical blending method. The corresponding composite fibers were extruded through a set of wet spinning unit and the composite membranes were prepared using a digital spin-coating technique. The…
Switched-mode power supplies applied to induction heating provide conditioned power to a wide range of loads. One of the main issues in the design of these systems is the identification of the main characteristics of the load, i.e. electrical equivalent, as it to be modeled by means of a reduced set of variables. This…
In this paper, we report on the application aspect of piezoelectric ZnO thin film deposited on flexible phynox alloy substrate. Highly crystalline piezoelectric ZnO thin films were deposited by RF reactive magnetron sputtering and were characterized by XRD, SEM, AFM analysis. Also, the effective d33coefficient value m…
A porous slider, i.e. a solid levitated by fluid injection from its porous bottom to reduce the sliding drag, is studied theoretically in this paper. Slip is present on both the slider and the ground. This three-dimensional problem is transformed to a set of high-order, nonlinear similarity equations. Asymptotic solut…
In this work AlxIn1-xN/GaN heterostructure is considered taking into account the effects of spontaneous and piezoelectric polarizations on sheet carrier concentration versus alloy composition. It is found that piezoelectric polarization decreases from (14.8×10-6C/cm2) to (-5.25×10-6C/cm2). Lattice matching appears for…
Among many key parameters required to obtain a record-efficiency Cu(In,Ga)Se2 (CIGS) cell, the band-gap of CIGS should have a double-graded profile in which the band-gap increases toward both of the back and front of the absorber. In an effort to obtain an increased Ga content near the junction area which will raise t…
This paper presents the characteristic of newly developed electrical steel and motor performance analysis for electric vehicles(EV). Four types of electrical steel, which are optimized for high flux density (PNHF), high frequency low core loss (PNF), high punchability (PNS) and high strength (PNT), are developed and o…
This paper proposes a sensing concept based on measuring the geometrical deformation of artificial magnetic cilia indirectly with a magnetoresistive sensor. The cilia are fabricated with a template-free method based on the evaporation of solvent from a suspension containing micron-sized magnetic particles and dissolve…
The electric stress created on an insulation system depends on the type of applied voltage stimulus. Real insulating systems often contain defects of different types e.g. cavities, voids within dielectric materials or at boundaries between the dielectric and the conductor which are sources of PD at large enough electr…
The composites of PVDF-HFP with various low concentrations (0-0.08 wt%) of single-walled carbon nanotubes (SWNTs) were prepared via solution casting and melt pressing, and were investigated for their enhanced dielectric and piezoelectric properties. It is found that the piezoelectric response increases by a factor of…
Abstract A simple and convenient method has been developed for synthesis of water‐soluble CdTe quantum dots (QDs) under ambient atmospheric conditions. In contrast to the traditional aqueous synthesis, green to red emitting CdTe QDs were prepared by using TeO2 to replace Te or Al2Te3 as tellurium source in this method…