Materials Literature
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In order to gain insights into the mechanisms of deformation and ultimate failure in a homologous series of lamellae-forming polyolefin block copolymers comprised of glassy poly(cyclohexylethylene) (C), elastomeric poly(ethylene- alt -propylene) (P), and semicrystalline poly(ethylene) (E), the anisotropic tensile prop…
One important application of nanotechnology is that of drug delivery, and in particular the targeted delivery of drugs using nanotubes. A proper understanding of the encapsulation behavior of drug molecules into nanotubes is vital for the development of nanoscale drug delivery vehicles. Furthermore, there are many oth…
A microwave variable phase shifter of a coplanar waveguide with floating electrodes using a ferroelectric liquid crystal is discussed. The electric field of the microwave is calculated in the phase shifter and the electric wave propagation of the coplanar waveguide mode is confirmed. The measured phase shift is propor…
Kevlar has demonstrated the ability to protect well against ballistic threats but has low resistance to puncture. Correctional Kevlar has shown good resistance to puncture. However, the fabric is expensive, difficult to manufacture because of its tight weave construction, and has limited protection against ballistic t…
A series of molybdates, Ag2Mo2O7 and AMoO4 (A = Zn, Co), were prepared as a new type of inorganic antibacterial agent via wet chemical routes including hydrothermal synthesis and coprecipitation reaction. The structure and morphology of the samples were characterized with X-ray diffraction and scanning electron micros…
The materials of spacecraft external surfaces in low Earth orbit (LEO) are exposed to the various constituents of the space environment, including atomic oxygen (AO) and solar ultra violet (UV) radiation. Material degradation and erosion by LEO are simulated in ground laboratories using a variety of experimental facil…
An experimental setup based on the electrical excitation of a piezoelectric sample is proposed for resonant ultrasound spectroscopy measurements. The detection of the mechanical vibrations is performed by means of a laser interferometer. At the same time, the free vibrations of piezoelectric parallelepipeds of tetrago…
Abstract The main objective of this contribution is to evaluate the environmental fidelity of dead diatom assemblages along two microtidal estuarine systems from southeastern Buenos Aires Province (Argentina). Living communities (inferred from counting protoplasm-containing cells) were compared to dead diatom assembla…
Superelastic and shape memory capabilities of Nitinol are strongly dependent on the alloy composition, its heat treatment, and mechanical deformation history. The current article presents a review of the behaviour of Nitinol and describes a characterization study conducted to determine the mechanical properties of the…
Refraction of a microwave plane wave by a wedge with exact characterization of and is evaluated by a ray approach. Snell's Law is used for the lossless wedge, while exact formulations are used for the propagation constants and angle in the lossy wedge. The heavily lossy wedge produces negative refraction. Data are giv…
The non-thermal plasma as one of the most promising technologies for removing NO x and SO 2 has attracted much attention. In this study, a new plasma reactor combined with catalyst and additive was developed to effectively oxidize and remove NO x and SO 2 in the flue gas. The experimental results showed that TiO 2 cou…
Here, we report fabrication and thermoelectric characteristics of polycrystalline bulks with aligned grains of the misfit-layered cobalt oxides, [(Bi1−xPbx)2Ba2O4±w]0.5CoO2. High-quality precursor powder was prepared with a spray-drying technique. The precursor was then sintered under a uniaxial pressure to yield dens…
[Wang, Yang; Sui, Yu; Cheng, Jinguang; Wang, Xianjie; Su, Wenhui] Harbin Inst Technol, Dept Phys, CCMST, Harbin 150001, Peoples R China. [Sui, Yu; Su, Wenhui] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China.;Sui, Y (reprint author), Harbin Inst Technol, Dept Phys, CCMST, Harbin 150001, Peoples R C…
Abstract Values of DHC rates in Zr alloys are sensitive to measurement procedures. A standard method has been developed at the laboratories of AECL and evaluated in a round-robin involving ten IAEA member states. Two test materials were used—Zr-2.5Nb pressure tubes in the cold-worked (CANDU™) and heat-treated (RBMK) c…
We have studied electromagnetic field on the surface of two-dimensional nanostructure of gold nanoparticles through two-photon-induced photoluminescence images by using scanning near-field optical microscope and far-field surface-enhanced Raman scattering measurements. The near-field two-photon-induced photoluminescen…
The characterization of rice husk from local rice mills has been studied and evaluated to determine its potential utilization as a biomass fuel for a cyclone gasifier. The raw rice husk was pre-treated throughout a grinding process into smaller sizes of particles which is within a range of 0.4 to 1 mm and the sample o…
The phase behaviour of a number of N‐alkylimidazolium salts was studied using polarizing optical microscopy, differential scanning calorimetry and X‐ray diffraction. Two of these compounds exhibit lamellar mesophases at temperatures above 50°C. In these systems, the liquid crystalline behaviour may be induced at room…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
Composites of poly(vinyl chloride) (PVC) filled with micron‐ and nanosized calcium carbonate (CaCO3) particles were prepared by solution blending. The influences of particle size and CaCO3 content on the microstructure and mechanical properties of the PVC composites were investigated by means of polarized optical micr…
X‐ray diffraction patterns for the uniaxial and biaxial nematic phases exhibited by rigid bent‐core mesogens were calculated using a simple model for the molecular form factor and a modified Lorentzian structure factor. The X‐ray diffraction patterns depend strongly on the extent of the alignment of the molecular axes…