Materials Literature
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We show how the two-dimensional Dirac oscillator model can describe some properties of electrons in graphene. This model explains the origin of the left-handed chirality observed for charge carriers in monolayer and bilayer graphene. The relativistic dispersion relation observed for monolayer graphene is obtained dire…
ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.pH-Dependent Transformation of Ag Nanoparticles in Anaerobic ProcessesZe-hua Liu*†‡, Yan Zhou‡, Abdul Majid Maszenan‡, Wun Jern Ng‡§, and Yu Liu‡§View Author Information† College of Environment and Energ…
In this work, rods of Al2O3–TiO2 eutectics containing 65 and 60 wt% Al2O3 were grown using the laser floating zone method. Raman spectroscopy was used to determine the phase composition. Creep strength of Al2O3–Al16Ti5O34 (65AT) eutectic at 1500°C has 320 MPa, which is about higher than β–Al2TiO5/Al2O3 (60AT) crystal.…
Implementation and investigation of the nonlocal damage models to study concrete damage under dynamic loading MSc Thesis
Volume is indexed by Thomson Reuters CPCI-S (WoS).Collection of selected, peer reviewed papers from the 2013 Dianchi Advanced Materials Forum, July 23-25, 2013, Kunming, China. The 81 papers are grouped as follows: Chapter 1: Ceramics and Ceramics-Matrix Composites; Chapter 2: Metals and Metal-Matrix Composites;Chapte…
Ship survivability has been defined as providing the capability of a warship to “Fight Through” damage. In the design of naval combatants, providing “Fight Through” capability is often achieved with structural vulnerability reduction measures such as blast hardened bulkheads and integrated box girders. Unfortunately,…
Abstract Review: 35 refs.
Polyvinlyl alcohol (PVA)/graphene oxide (GO) composites are prepared by solution blending method. And the non-isothermal crystallization kinetics of as-prepared composites is evaluated by differential scanning calorimetry (DSC). The results indicate the graphene oxide can significantly modify the non-isothermal crysta…
We study a chain of anharmonic springs with tunable power law interactions as a minimal model to explore the propagation of strongly nonlinear solitary wave excitations in a background of thermal fluctuations. By treating the solitary waves as quasiparticles, we derive an effective Langevin equation and obtain their d…
Theoretical calculations are performed for the transmission efficiencies of parabolic nano-probes with different shapes, based on the finite element method. It shows that the transmittance will fluctuate dramatically with the variation of either wavelength or probe shape, and the efficiency could be rather high even a…
The impact shear response of crystallized polypropylene under combined compression and shear loading was studied by using an inclined gas gun and electro-magnetic particle velocity gauges. The experimental results show that the transverse wave velocity increases nonlinearly with the impact velocity, indicating its she…
Processes of carbon steels fracture under their repetitive dynamic loading according to the compression scheme have been studied. It has been ascertained that the main cause of fracture of cyclically compressed specimens is crack initiation and propagation on exposure to tensile internal stresses forming at the crack…
Utilization of high tech engineering materials such as composites has been extensively applied in the industries of civil, mechanical and aerospace due to their favourable characteristic such as high stiffness to weight ratio, improve corrosion and environmental resistance and potential reduction of processing. This r…
This paper presents an investigation into the losses and thermal characteristics of induction motors operated from pulse width-modulated (PWM) voltage supply in comparison to that operated from sinusoidal voltage supply. It was concluded that due to the abundant harmonics in the PWM waveforms, significant losses are i…
Multi-arc ion plating technique was used to fabricate TiN film on the surface of high speed steel (HSS) to improve its wear resistance. The structure and morphology of TiN film were analyzed by XRD and SEM,and the bonding strength between the film and substrate was studied by the scratch tester. The results show that…
In the title compound, C20H20N2O3, the central 2,5-di-hydro-1H-pyrrole ring [r.m.s. deviation = 0.014 (1) Å] is oriented at dihedral angles of 77.81 (6) and 25.33 (6)°, respectively, to the attached phenyl ring and the aniline phenyl ring. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, mol-ecules are l…
In order to make the pressure safe, a new method and material for reinforcing pipelines is introduced, that is carbon fiber reinforced polymer sheet. In the experiment, the metal pipelines that wrapped with different layers of CFRP sheets respectively are carried loads by hydrostatic burst test. The results show that…
In this paper, a novel bandpass filter (BPF) using the composite right/left-handed transmission line (CRLH-TL) theory is presented.The composite right/left-handed TL with the high-pass characters of left-handed transmission line (LH-TL) and the low-pass characters of right-handed transmission line (RH-TL) are used to…
Hot compression of AZ3l magnesium alloy was carried out at deformation temperatures of 523-723K and strain rates of 0.01-10s-1. The effects of deformation process on the microstructure and flow stress were investigated. The flow stress curves showed the characteristic of dynamic recrystallization (DRX) with deformatio…
A new kind of functionalized CdTe/Fe3O4 was synthesized for the quantitative and selective determination of bovine serum albumin (BSA). The effects of pH value, reaction time, temperature and dosage of CdTe/ Fe3O4 on the detection of BSA were investigated. Under optimal conditions, the straight line equation: F/F0=1.4…