Materials Literature
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In this study we report the effect of sintering temperature on the low field magnetotransport properties of La_0.7Ca_0.3Mn_O3 manganite synthesized through polymeric precursor route. The La_0.7Ca_0.3MnO_3 has been sintered at 600^oC (S6), 700^oC (S7), 800^oC (S8), 900^oC (S9) and 1000^oC (S10). XRD confirms that phase…
We report a technique for the patterned alignment of liquid crystals on polyimide using microrubbing (μ-rubbing). Homeotropic polyimide was μ-rubbed with a metallic sphere 1 mm in diameter under a specified load of 150 grams. We observed that μ-rubbing induces a high pretilt planar alignment when homeotropic polyimide…
The thermal degradation of short nylon-6 fiber reinforced acrylonitrile butadiene rubber (NBR) composites with and without epoxy-based bonding agent has been studied by thermogravimetric analysis (TGA). It was found that the onset of degradation shifted from 330.5 to 336.1°C in the presence of short nylon fiber, the o…
Reduced activation ferritic/martensitic steels (RAFs) are leading candidates for blanket and first wall of fusion reactors where effects of displacement damage and helium production are important subjects to be investigated. To obtain systematic and accurate information of microstructural response under fusion environ…
Abstract Novel Display realizing true paper‐like whiteness has been developed, which is rewritable by utilizing the electrochromic system. Nylon/silica nanocomposite pulp holding a great deal of electrolyte was used resulting in naturally white electrochromic display which has a higher white state reflectivity of 65%,…
Abstract Dispersion of copper(II) phthalocyanine (CuPc), copper(II) phthalocyaninesulfonate (CuPcS) and cobalt(II) phthalocyaninetetrasulfonate (CoPcTS) on the surface of titanium dioxide was investigated by XRD, XPS, FT‐IR and UV‐Vis techniques. Results show that interaction between CuPc and TiO 2 was very weak and C…
In this paper, a review of the molecular aspects of fracture is given, a subject that was pioneered by S. N. Zhurkov and his colleagues. Particular attention will be paid to the mechanisms of stress transfer onto straight chain segments, the role of chain interpenetration in establishing interfacial strength during cr…
Raman spectroscopy has been used in the identification of crystallography property of nanosemiconductors. The identified result by Raman spectroscopy is consistent with that by the X-ray refraction (XRD) in bulk materials and in non-polar semiconductors, e.g., porous silicon and Si nanowires. But for nano-polar semico…
Abstract Stressed liquid crystals (SLCs) are fast light modulating materials based on polymer/liquid crystal composites. We used polarizing microscopy and fluorescence confocal microscopy to investigate liquid crystal domain sizes and shearing mechanism for SLCs with different domain sizes. We observed the stretch of…
Inorganic Scale Control Within MEG/Methanol-Treated Produced Fluids M. M. Jordan; M. M. Jordan Nalco Search for other works by this author on: This Site Google Scholar N. D Feasey; N. D Feasey Nalco Search for other works by this author on: This Site Google Scholar C. J. Johnston C. J. Johnston Nalco Search for other…
Abstract In non‐catalytic direct conversion of propylene with oxygen to propylene oxide by using dielectric barrier discharge under conditions of room temperature and atmospheric pressure, the selectivity to propylene oxide from propylene was >30% at propylene conversion ranging from 3.91% to 81.72%.
This paper presents a vector model of magnetization based on the three-dimensional (3-D) Stoner-Wohlfarth elemental operator. To account for the magnetic interactions between particles, a phenomenological mean-field approximation is employed. The paper also illustrates the numerical simulation results of the magnetiza…
The magnetic absorption of electromagnetic waves by a small metallic particle of ellipsoidal form is investigated in frequency regions both higher and lower than the characteristic frequency of the free passage of an electron between walls of the particle. The boundary conditions chosen are diffuse reflection of the e…
In this paper we propose a fractal theory for the prediction of the time-effects on the damage evolution in cracking solids. By means of the Acoustic Emission (AE) technique, we have analysed the evolution of damage in several structures by an extensive experimental analysis in time. This technique permits to estimate…
Mixed sodium thio/oxo orthovanadates(V), dark red Na 3 [VS 3 O] and orange red Na 3 [VS 2 O 2 ], were synthesized via reactions in the melt starting from V, Na, Na 2 S, Na 2 O and sulfur. The structure of the low temperature phase of Na 3 [VS 3 O] (space group Pnma, a = 589.5(3), b = 962.8(5), c = 1186.6(6) pm, Z = 4,…
The description of algorithm to design in-pipe experimental ampoule devices (IPAD) is presented here, including description of IPAD design for irradiation tests of highly enriched lithium ceramics at WWR-K reactor. The description of the system for registration of tritium release from ceramics during irradiation is pr…
The formation and stability of the quasicrystalline icosahedral (i) phase in melt-spun Al93– x Fe3Cr2Ti2Si x (x = 0–5) ribbons are reported. Samples were characterized by X-ray diffraction, differential scanning calorimetry and transmission electron microscopy. Primitive (P-type) ordered i phase particles were found t…
Reactive synthesis by mechanical alloying and subsequent hot consolidation is an appropriate way to produce an Al‐Al 3 Ti‐Al 2 O 3 nanocomposite from readily available and inexpensive aluminium powder and nanosized TiO 2 . This processing route provides a fine grained and thermally stable microstructure with a control…
Despite the favourable strength and thermal stability, a disadvantage of the Mg-based alloys consists in a low ductility. Recently it has been demonstrated that ultra fine grained metals with grain size around 100 nm can be produced by high pressure torsion. A number of ultra fine grained metals exhibit favourable mec…
The system of magnesium and magnesium iodide can reduce some aromatic aldehydes and ketones to the corresponding pinacols in good yields within 10–60 min at room temperature under ultrasound irradiation.