Materials Literature
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Biodegradable/bioeliminable, core-cross-linked, block co-polymer nanoparticles have been synthesized as a potential anti-tumour drug-delivery system. Methacrylate-modified poly(ethylene glycol)-b-poly(D,L-lactide) (PEG-b-PDLLA) composed of low-molecular-weight polymer blocks (<5 kg/mol) were synthesized by ring-openin…
We used powder X-ray diffraction (XRD) and Rietveld refinement to study phase transformation and the lattice strain introduced into each hydride phase of Ti1.0V1.1Mn0.9 during first absorption and desorption. Hydrogenation proceeded from a solid-solution phase to a dihydride phase via a monohydride phase. Each single-…
During an aircraft's life, it will experience a variety of Foreign Object Damage (F.O.D.) strikes, some of which involve critical components in engines and undercarriage. The principal repair method for F.O.D. impacts is to grind away the visible surface damage, as long as this grind-out does not exceed limits on acce…
The effect of chemical structure of segmented poly(urethane-urea)s on its interfacial interactions with poly(vinyl chloride) as well as supramolecular structure and the properties of prepared composites has been studied. A direct influence of flexible and rigid segments of elastomers on a compatibility, structure and…
A novel conjugated donor-acceptor compound (1) based on tetrathiafulvalene has been synthesized and fully characterized. Intramolecular charge transfer (ICT) in compound 1, arising from HOMO-LUMO singlet transitions, has been experimentally evidenced through absorption/fluorescence spectra and theoretical calculations.
The UOE-SAWL pipe manufacturing process introduces considerable plastic deformations and residual stresses to feedstock plate material. Previous experimental and analytical studies have demonstrated that the effects of this process, predominantly in its final expansion stage, significantly reduce the collapse resistan…
Highly [001] textured KSr2Nb5O15 (KSN) ceramic fibers were fabricated by a combination of novel alginate gelation method and templated grain growth using acicular KSr2Nb5O15 template particles. Fibers were drawn from alginate based slurries without or with 10 wt% KSN template particles. A maximum texture fraction of 0…
Publisher’s Note: Facile One-Pot Synthesis of Nanoporous Copper Ribbons with Bimodal Pore Size Distributions by Chemical Dealloying [J. Electrochem Soc., 158, D611 (2011)] W. B. Liu,a,b S. C. Zhang,a N. Li,b J. W. Zheng,a and Y. L. Xinga aSchool of Materials Science and Engineering, Beihang University, Beijing 100191,…
In this paper, the mechanical properties of short roselle and sisal hybrid fibre reinforced polyester composite were analysed based on the wt% for constant length of the fibres. The fractured surfaces of the composite specimens were investigated using scanning electron microscopy (SEM). A positive hybrid effect was ob…
We present detailed information on thermal driving anodization (TDA) process for fast fabrication of porous anodic alumina in both oxalic and phosphoric acids. The TDA process was realized under high temperature of 30–70°C. Fast fabrication with high growth rate of 15–90 μm/h was achieved under 30–50°C in oxalic acid.…
By reaction of solid As(4)S(4) with gaseous Cl(2) at a temperature of 410 K gaseous AsSCl and AsS(2)Cl are formed. Unexpectedly in AsS(2)Cl the arsenic is not of formal oxidation state +V but +III: the molecular structure of AsS(2)Cl is arranged as a 1-chloro-dithia-arsirane and comprises an hitherto unknown AsS(2) th…
Recently, electromagnetic interference (EMI) and electromagnetic compatibility (EMC) have become serious problems due to the growth of electronic device and next generation telecommunication. It is necessary to develop new electromagnetic wave absorbing material to overcome the limitation of electromagnetic wave shiel…
In this work, accumulative roll bonding (ARB) process as a severe plastic deformation was applied on an AA5083 sheet up to 6 cycles at the temperature of 300℃ and at the strain rate of 50 s‐1. The results of tensile tests show that the values of the yield stress and the ultimate tensile strength don't change consider…
Strong effects of the Faraday instability on suspensions of rodlike colloidal particles are reported through measurements of the critical acceleration and of the surface wave amplitude. We show that the transition to parametrically excited surface waves displays discontinuous and hysteretic features. This subcritical…
We have developed a two-step deposition technique. In the first step, a TiO 2 nucleus is formed on a SiO 2 thin film by radical-assisted sputtering using reactive-mode sputtering and O 2 radicals. The second step is a growth step where TiO 2 is deposited at a high rate and at a low temperature on the nucleation layer…
Application of carbon nanotubes (CNTs) to nanometer-scale electronic devices of the next generation is being highly expected owing to their prominent electronic properties and mechanical and chemical stability. Controlling local strain is a key issue to design and realize such devices because of the interplay between…
Thermogravimetric analysis (TGA) is a fundamental tool to study the degradation and pyrolysis behaviours of milligram-sized samples in inert or oxidising atmospheres. One of the most important outputs of TGA measurements is the maximum heat release rate (MHRR) or the maximum mass loss rate (MMLR). Analytical solutions…
The effects of various surface treatments on the friction and wear properties of AZ91D magnesium alloy substrate against the SUJ2 steel ball were evaluated by using a horizontal reciprocating friction and wear test apparatus. The friction and wear properties greatly changed due to the type of surface treatment in spit…
A simple template-based synthesis of three-component nanorods with flexible central sections is discussed. These nanorods become flexible by dissolving their central silver sections in dilute hydrogen peroxide, to leave behind a flexible yet robust residue. It is also shown that the flexible region can be reinforced b…
The effect of casting defects on the high cycle fatigue property of magnesium alloy was investigated in this study. Two AM60B magnesium alloys were manufactured by high pressure die casting with different processing parameters such as die morphology, melt and die temperatures. One of AM60B alloys with relatively high…