Materials Literature
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The mixed alkali effect on zinc borate glasses have been reported. The glass systems of nominal composition 10Zn+xLi2O+yNa2O+80B2O3 (x = y = 0, 5, 10, 15 mol%) were prepared using standard melt quenching method. The structural, physical and mechanical properties of the samples have been studied using X-ray diffraction…
We have studied the formation of buried, hollow channels in oxidized porous silicon produced by a process based on focused high-energy ion irradiation of low resistivity, p-type silicon.
This is a review article concerning the crystal growth under external electric fields that has been studied in our lab for the past 10 years. An external field is applied electrostaticallyeither through an electrically insulating phase or a direct injection of an electric current to the solid-interface-liquid. The for…
for pristine PEDOT:PSS. We characterize the nonlinear stress-strain response of dPEDOT, well described using a Mooney-Rivlin hyperelastic model, and report elastomer-like moduli with ductility ∼ fives times its original length. Dynamic mechanical analysis shows constant storage moduli over a large range of frequencies…
A new potential application of nanotechnology for mineral scale prevention in the oil and gas industry is presented. In current squeeze treatments, in which scale inhibitors are squeezed into wells to adsorb or precipitate onto rock surfaces for later release, a large proportion of the injected inhibitor does not adso…
Two kinds of nacre-inspired materials, including artificial carbonate nanocrystals and layered structural nanocomposites are reviewed by Shu-Hong Yu and co-workers on page 163. Nacre is a naturally occurring material that can be found on the inner surfaces of molluscs, for example mussels. The review presents an overv…
The styphnate of smaller size possesses lower decomposition temperature and higher reactivity.
[Ni 8 ] cages templated by η 3 :η 3 :μ 6 -O 2 2− from O 2 activation: the ligand found oxidized within the cages.
Nanostructured Y0.95Ca0.05MnO3 (YCMO) samples have been synthesized using cost effective sol-gel method. The samples were sintered at various temperatures ranging between 700 – 1100°C (ST). XRD studies reveal the single phasic nature of the samples. Frequency dependent dielectric (ε) and modulus (M) behaviors of YCMO…
A novel three-dimensional nanostructured porous graphene nanocomposite was synthesized by sol–gel polymerization of hydroquinol (H) and formaldehyde (F) with sodium carbonate as a catalyst in graphene oxide (GO) suspension, followed by carbonization of HF and thermal reduction of GO to graphene at high temperature. Th…
As-cast and homogenization treated as-cast Al–Cu (3 mass% Cu) alloy samples were processed via high-pressure torsion (HPT) under an applied pressure of 8 GPa with 5 revolutions at room temperature. Microstructure, mechanical properties, and fracture surface morphology of the HPT-processed Al–Cu were investigated, demo…
Well-defined magnetic nanovesicles are obtained through self-assembly of double hydrophilic PEG–PDMAEMA block copolymers and oleic-coated iron oxide nanoparticles.
Arm-first divergent approach combined with selective precipitation has been developed to synthesize dendrimer-like polystyrenes efficiently and economically.
Mixed alkali borate glasses of composition xLi2O-(30−x)K2O-10WO3-60B2O3 (0 ≤ x ≤ 30 mol%) were prepared by melt quench technique. The structure of present glass system was investigated by Raman spectroscopy. The characteristic bands of these glasses due to the stretching and bending vibrations were identified and anal…
Exfoliated graphite with large expanding volume (EV) was prepared by two-step intercalation, in which the mixture of nitric acid and phosphoric acid, and that of nitric acid and acetic acid were employed as intercalating agent step by step, and potassium permanganate was used as oxidant. Its preparation conditions wer…
To measure fabric permeability over the body at air velocities encountered in running, a series of air pressure measurements were conducted on a mannequin torso in a wind tunnel. Pressure measurements were made at wind speeds of 3.3 m/sec, 5.3 m/sec and 10.0 m/sec from 15 pressure taps that ringed the circumference of…
This brief review analyzes the parameters that can be used to guide the generation of hierarchic systems that include inorganic and/or biological nanoscale objects. Importance of interface effects and geometrical factors are underlined. The mutual influence between the substrate and the deposited material is an import…
Nitrosamines formed in the CO2 capture process are considered potential environmental hazards and ways to minimize the formation of these degradation products are necessary. Here, a catalytic nitrosamine hydrogenation with amine recovery approach is proposed. Palladium-based heterogeneous catalysts were screened initi…
The tube inside and outside heat transfer mechanism of Passive Residual Heat Removal Heat Exchanger (PRHR HX) was analyzed. The calculation method of this special heat exchanger under natural convection condition in In-containment Refueling Water Storage Tank (IRWST) was carried out. The single-tube coupling model thr…
Chitosan fluorescent films containing 7-hydroxy-4-methylcoumarin (7H4MC) have been successfully prepared. Used chitosan was obtained from chitin isolated from skin of tiger prawns (Penaeus monodon) through the deproteination, demineralization, and deacetylation process. The yields of chitin and chitosan are 10.66% and…