Materials Literature
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Abstract A study of the influence of the substrate mismatch on the growth of ZnO nanostructures is reported. ZnO nanostructures are deposited, by a simple catalyst‐free metal‐organic (MO)CVD approach, onto various substrates, such as SrTiO 3 (100), Si(100), and Al 2 O 3 (0001), using a novel diamine adduct of zinc bis…
We report the formation of -cyclodextrin (CD) inclusion compounds with octanethiol (OT), decanethiol (DT) and dodecanethiol (DDT). Elemental Microanalysis, 1 H-NMR solution, Scanning Electronic Microscopy (SEM) and Powder X-ray Diffraction analysis (PXRD) confirm the inclusion process of the alkylthiols in to the -cyc…
"Nanomaterials in catalysis." Materials Research Innovations, 12(2), pp. 60–61
Domain witching of ferroelectrics under mechanical or electric load in vacuum or dry air has been intensively studied. However, the effects of environments on the domain switching in ferroelectrics have not been well understood. Here, we demonstrate that domain configurations in BaTiO3 single crystal under sustained l…
Abstract. Beryllium, tungsten and carbon are planned as wall materials for the future international tokamak (ITER). Be and W will be the dominant components and therefore the formation of binary Be-W alloys under plasma action is one of the most important issues in plasma-wall interaction processes at the first wall.…
Abstract Fatigue failures occur due to the application of fluctuating stresses that are much lower than the stress required to cause failure during a single application of stress. This chapter describes three basic factors that cause fatigue: a maximum tensile stress of sufficiently high value, a large enough variatio…
Noble metals, magnetic and semiconducting nanocrystalline materials have been synthesized via the thermolytic decomposition of inorganic metal salts, at high temperature, in commercial oleyl amine. The oleyl amine acts as high boiling point coordinating solvent, capping agent and, when required, as reducing agent. The…
In recent times, liquid nitrogen (LN2) is used as an insulant as well as coolant in high temperature superconducting power equipments. One of the major problems in the liquid insulation is the particle contamination, which can generate incipient discharges that can lead to complete failure of the insulation system dur…
We have studied the properties of Ag/undoped ZnO (ZnO) multilayer thin films deposited on glass substrates by facing target sputtering. In an attempt to determine the optimum conditions of the Ag thin film, which would be coated on the ZnO thin film, we investigated the changes in sheet resistance, transmittance, and…
Abstract Surmmary: Polyurethane elastomers (PUEs) were synthesized with poly(oxytetramethylene) glycol (PTMG), 4,4′‐diphenylmethane diisocyanate (MDI) and 1,4‐butanediol (BD)/1,1,1‐trimethylol propane (TMP) by a prepolymer method. The degree of microphase separation of bulk and ultrathin films for these PUEs was confi…
A new approach to modify silica for the purpose of optimizing the mechanical properties of filled natural rubber was carried out in this study. Based on the acidic characteristics of the silica surface, a basic cyclohexylamine (CA) solution was used as a modifer and the modification was successfully confirmed by FT‐IR…
Two bacterial strains, Pseudomonas aeruginosa CMG607w and CMG1421 produce commercially important biopolymers. CMG607w isolated from the sediments of Lyari outfall to Arabian Sea synthesize the mcl-polyhydroxyalkanoates from various carbon sources. The production of PHAs was directly proportional to the incubation peri…
Zn 0.92 Co 0.08 O nanowires with two different average diameters, 19 and 38 nm, have been made by the vapor transport and Co ion implantation method. The as-implanted nanowires were thermally annealed through multiple steps in a high vacuum. The morphology and crystal structure of the nanowires were inspected by use o…
Semiconductor quantum dots are at the forefront of materials science chemistry with applications in biological imaging and photovoltaic technologies. We have developed a simple laboratory experiment to measure the quantum-dot size from fluorescence spectra. A major roadblock of quantum-dot based exercises is the parti…
The presence of a hexagonal boron nitride (h-BN) phase in pulsed laser deposition PLD BN thin films has been evidenced by Raman spectroscopy, TEM and AFM measurements. The films have been deposited by means of PLD technique, fixing the laser fluence value at 1.35 J cm−2, at the substrate temperature T s=RT and T s=600…
In this report, the light emitting behavior of silver nanoclusters embedded in sodalime glass through ion-exchange technique is studied. The cluster sizes were varied through thermal annealing. The optical absorption spectra were recorded for all the glasses. The variation of surface plasmon resonance peak with the an…
The absorption and emission spectra of a liquid-crystalline melt prepared on the basis of a synthesized mesogenic europium (III) adduct are studied in the temperature range from 77 to 348 K. The main channels and rate constants of intramolecular energy transfer from ligands to Eu (III) ions are determined from the abs…
Conductive surfaces on woven fabrics were obtained by knife-over-roll coating in laboratory small-scale equipment and continuously in a pilot plant.Commercially available inherently conductive polymers (polyaniline, polytiophene and polypyrrole) were mixed with an acrylic binder polymer, and coated on a polyester fabr…
The mechanical behaviour (strength and stiffness) of natural fibre reinforced thermoplastics is investigated on the example of an injection moulded sisal-polypropylene system. An analytical model based on the rule of mixtures is developed to predict the mechanical behaviour of such composites. Considering interfacial…
Abstract Medium‐chain‐length polyhydroxyalkanoates (mcl‐PHAs) produced by Pseudomonas putida KT2442 can be chiral 3‐hydroxyalkanoic acids catabolized by the intracellular PhaZ depolymerase when the bacteria are cultured under carbon limitation. PhaZ is an intracellular depolymerase and is attached to PHA granules. In…