Materials Literature
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Soda lime glass was thermally poled at 280°C with dc voltages up to 2kV. Second-order nonlinearity was found in a layer ∼1.7μm beneath the anode surface with second-harmonic microscopy. Scanning electron microscopy was employed to examine the microstructure of the poled glass under the anode. In the depletion region,…
Systematic investigation on the deposition of thin silicon-carbon-nitride films by reactive rf magnetron sputtering from SiC–C composite target in nitrogen-argon atmosphere was studied. The significant effect of deposition pressures on the hardness of the deposited SiCN films was found, which varied between 4.7 and 44…
A multiscale modeling strategy is developed to study grain boundary fracture in polycrystalline aluminum. Atomistic simulation is used to model fundamental nanoscale deformation and fracture mechanisms and to develop a constitutive relationship for separation along a grain boundary interface. The nanoscale constitutiv…
Les sols céréaliers du Nord-Ouest de la Tunisie dérivent la plupart du temps d'apports alluviaux ou des débris d'altération des roches carbonatées argileuses. L'extraction de la fraction argileuse de quatre types représentatifs de ces sols a permis de mettre en évidence les minéraux argileux suivants : kaolinite, illi…
Collision‐induced breakup resulting from binary collisions of large drops has been investigated in the past by very few laboratory experiments. This process is here investigated using a 3D‐CFD program based on direct numerical simulation. Besides same drop pairs as considered in the measurements also a number of addit…
The diatom flora of Lake Abant was studied monthly for 2 years (June 2003-June 2005) from 3 littoral and 2 vertical stations. A total of 123 diatom taxa were identified. Some species (Asterionella formosa Hassall, Cymbella silesiaca Bleisch, C. cistula Kirchner, Fragilaria biceps (Kutzing) Lange-Bertalot, F. dilata (B…
Assessment and comparison of CO2 corrosion predicition models Richard Charles Woollam; Richard Charles Woollam BP Exploration Search for other works by this author on: This Site Google Scholar Sandra Hernandez Sandra Hernandez BP Search for other works by this author on: This Site Google Scholar Paper presented at the…
Purpose To give an overview about market trends and driving forces of halogen-free materials for PCB applications. The paper also includes an overview about new halogen-free raw materials developed to meet the market demand. Design/methodology/approach The paper does not intend to deal with scientific aspects, i.e. wh…
All work published so far on C-SiTF on ceramics was based on either non-conductive ceramics, or on "model" ceramics never able to cope with the cost requirements. For a wafer equivalent approach, where c-Si films on substrate can be directly processed to solar cells with nowadays technology, the respective substrates…
Textile industrial scouring processes are currently based on the use of chemical reagents that cause an important environmental impact. For some years, several research groups have focused on obtaining enzymes that can carry out the scouring task in an effective way, allowing at the same time a decrease of the industr…
Six samples of Fe100−xGax (15⩽x⩽30) were prepared by melt spinning for a systemic investigation of the structure, magnetostriction, and magnetic properties of Fe–Ga alloys. A large magnetostriction (>750ppm) that increases with increasing Ga concentration has been observed in Fe100−xGax (15⩽x<25) ribbons…
Clay subfractions (SFs) of <0.1, 0.1–0.2, 0.2–0.3, 0.3–0.6, 0.6–2 and 2–5 μm separated from Middle Riphean shales of the Debengda Formation are studied using the TEM, XRD, K-Ar and Rb-Sr isotopic methods. The oxygen and hydrogen isotope compositions in the SFs are studied as well. The low-temperature illite-smectite i…
We report the synthesis and characterization of hitherto unreported bent‐shaped dimeric liquid crystals based on a furan bridge in the mesogenic core. The compound 18‐Fu2 exhibits liquid crystalline behaviour.
Microcellular wood fibre reinforced polypropylene composites, a new development using bio-fibre strengthened plastic, were prepared in an injection moulding process. The influence of three different endothermic chemical foaming agents was examined. The effects of various concentrations (1 to 4 wt.% of the composites)…
Composite materials have become a necessity in recent times due to their attractive properties. The use of natural fibers is also having enough potential in the formation of feasible composites. The use of such composites in structural application as a low cost material has created a new horizon for investigation. Jut…
We report on the photoresponsivity of ZnO Schottky barrier diodes grown on (0001) GaN∕Al2O3 substrates by plasma-assisted molecular-beam epitaxy. First, ZnO Schottky barrier diodes show a reverse saturation current of ∼10−8A in the dark, and they present a large current buildup of ∼103A under ultraviolet light illumin…
All available literature data on the thermodynamic properties of Mn-Si alloys are analyzed. Optimized concentration dependences of the thermodynamic functions of mixing are obtained.
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. V. Grinkevich, "Version of an objective with variable focal length," J. Opt. Technol. 73, 343-345 (2006) Export Citation BibTex Endnote (RIS) HTML P…
Charge enhancement of organic materials that was deduced more than two decades ago by means of capacitance-voltage (C-V) measurements meets with difficulties and controversial explanations when using the classical semiconductor theory. Experimentally, it has been found that the charge localization results in nonstatio…
Strontium is one of the most common substituents in apatite crystals. The presence and behavior of Sr in apatite-group phases are of considerable significance in biology. The present paper investigates the substitution of strontium for calcium in a glass-ceramic of the following composition 4.5SiO23Al2O31.5P2O54CaO1Ca…