Materials Literature
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ABSTRACT Brown seaweed Padina tetrastromatica (PTS)‐Zinc oxide (ZnO) composites were prepared by chemical precipitation method. The characteristic peaks of PTS and ZnO were confirmed by Fourier transform infrared spectroscopy. X‐ray diffraction study was confirmed the formation of ZnO with hexagonal wurtzite phase. Su…
We suggest a simple quantitative model for the diminution of contact angle hysteresis under the influence of an oscillatory force invoked by thermal fluctuations, substrate vibrations, acoustic waves, or oscillating electric fields. Employing force balance rather than the usual description of contact angle hysteresis…
A density-functional study has been undertaken to investigate the chemical properties of in-plane heterostructures of graphene and hexagonal boron nitride. The interactions of armchair and zigzag linking edges with oxygen are looked at in detail. The results of the calculations indicate that the linking edges are high…
The surface structure and morphology of cobalt oxide thin films grown on Au(111) were studied using scanning tunneling microscopy (STM) and ultraviolet and X-ray photoelectron spectroscopies. Initial growth in O 2 led to 2-D CoO clusters exhibiting a superstructure in STM images characteristic of the lattice mismatch…
Using density functional theory calculations, a comparative study at a microscopic level of the different factors that influence the anionic conductivity in YSZ/doped-CeO 2 heterointerfaces is presented. First oxygen migration paths and barriers are examined, either at the YSZ phase or at the interface as a function o…
Pulmonary inhalation is increasingly being selected as a preferred route for the delivery of both small and large drug macromolecules for the treatment of a range of pathologies. The direct crystallization of micronized powders, in particular, paracetamol, remains difficult, as it requires the ability to work in high…
A selective release system was demonstrated with a dual-cargo loaded MSNs. When stimulated by different signals (UV or H(+)), this system could selectively release different kinds of cargoes individually. Furthermore, this system has been used to provide a combination of chemotherapy and biotherapy for cancer treatmen…
Viscose fabric-reinforced unsaturated polyester composites were successfully prepared through vacuum infusion process. Unidirectional viscose fabric was modified by two different organosilane coupling agents and by acetylation treatment. The main objective was to study the influence of fabric treatment on the mechanic…
Starch foams from native cassava starch/cross‐linked starch blends were prepared by baking in a hot mold. The native cassava starch/cross‐linked starch ratio was varied in the series of 100/0, 80/20, 60/40, 50/50, 40/60, 20/80, and 0/100. The effect of the native cassava starch/cross‐linked starch ratio on the propert…
The functionality of graphene and other two-dimensional materials in electronic devices is highly influenced by the film-substrate charge transfer affecting local carrier density. We demonstrate that charges buried under the few layer graphene on/in the insulating substrate can be detected using electromechanical actu…
The superconducting fluctuations well inside the normal state of Fe-based superconductors were experimentally studied through the in-plane paraconductivity in several high-quality, optimally doped BaFe 2− x Ni x As 2 crystals. These measurements were performed in magnetic fields with amplitudes up to 14 T, and differe…
The solution-mediated polymorphic transformation of FV sulphathiazole was investigated in ethanol at 10 °C. Powder X-ray diffraction (PXRD) identified the transformation product as a mixture of FII and FIV sulphathiazole. This mixture remained stable in solution at 10 °C with agitation for 24 h. In situ temperature co…
Abstract BACKGROUND The kaolin flocculant activities of bovine blood (BB) and hemoglobin (HEM) at different salt and pH values were determined. Lower limit concentration (LLC), window of application (WA), and degrees of clarification (DC) values for BB and HEM were determined and compared with those of the synthetic p…
ABSTRACT The synergetic effect of multiwalled carbon nanotubes (MWNTs) and carbon fibers (CFs) in enhancing the electrical conductivity of nylon 6 (PA6) composites was investigated. To improve the compatibility between the fillers and the PA6 resin, we grafted γ‐aminopropyltriethoxy silane (KH‐550) onto the MWNTs and…
This paper describes studies on the surface modification of so-called ballistic materials (materials commonly used to protect the human body against firearms, i.e. fragments or bullets). Two materials, an ultra-high molecular weight polyethylene (UHMWPE) composite and aramid fabric, were investigated. The surfaces of…
A review is given of our last advances on Raman spectroscopy characterization of irradiated and/or leached UO2, PuO2and (U,Pu)O2samples. For this purpose, three original Raman setups dedicated to the study of nuclear materials were involved. In every case, irradiation-induced Raman defect bands in the 500 - 750 cm-1ra…
Sago starch was modified by crosslinking with sodium trimetaphosphate (STMP). Different formulations of films were prepared by a blending process and a casting method. A suitable plasticizer was added to the blend. Mechanical properties of plastic films with unmodified and modified sago starch were compared. From the…
The thermal expansion of a hole, in a planar system, follows the same trend as the thermal expansion of the whole system, i.e., the hole expands (contracts) if the material expands (contracts) under thermal excitation. At nanoscale, this phenomenon has not been studied so far. Here, using tools of classical molecular…
Herein, we report, for the first time, the use of MRI methods to study enzymatic hydrogelation. Supramolecular hydrogels have been exploited as biomaterials for many applications. However, behaviors of the water molecules encapsulated in hydrogels have not been fully understood. In this work, we designed a precursor 1…
CeO 2 thin films were deposited on Si , Al , Ti –6 Al –4 V alloy, Si 3 N 4 and glass substrates by magnetron sputtering at room temperature. Growth of CeO 2 films on Si and Si 3 N 4 and effect of annealing were investigated by XRD, FESEM and AFM. Interaction between deposited CeO 2 films and Si , Al , Ti –6 Al –4 V al…