Materials Literature
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We report a detailed investigation of the trapping and release of charge carriers from grain boundaries in polycrystalline diamond grown by chemical vapor deposition (poly-CVD). A model for charge trapping and release is presented for samples which display very different bulk characteristics as determined by photolumi…
Abstract Recently, we have developed advanced fringe field switching (AFFS) technology with a novel outdoor readability, super high CR and high transmittance that obtained from a new electro‐optical design rule by optimization of LC electrodynamics and precise control of polarization light without transflective resin…
Abstract Organized carbon nanotubes (CNTs) have been grown at a fast rate by a gas‐phase, catalytic CVD technique at 600–750 °C for 15 min with the iron pentacarbonyl/acetylene/hydrogen system. The CNT growth at various temperatures and flow rates of iron pentacarbonyl, acetylene, and hydrogen, has been quantitatively…
In a previous programme sections of the same XLPE-insulated ac-cables were stressed under different electro-thermal conditions and for various durations. Here, thin peelings from the cable insulation have their electrical endurance compared with peelings taken from an unstressed cable section, under the same test cond…
Abstract A reference sample of sepiolite and products of its comminution by vibrating dry-milling have been studied using X-ray diffraction (XRD) line-broadening analysis, complementary field emission scanning electron microscopy (FESEM) images and surface area measurements. The apparent crystallite sizes determined v…
Polymethyl acrylic acid (PMAAc) with lower molecular weight was prepared by solution polymerization in water. A series of macromolecular rare earth complexes of PMAAc (RE‐PMAAc, RE=La,Sm,Eu,Tb,Dy) have been synthesized and well characterized by means of elemental analysis, IR, TG‐DTA analyses and fluorescence determin…
The crystalline and magnetic structures of γ-Fe 2 O 3 maghemite synthesized in porous glass in the form of nanoparticles with a mean diameter of 106(2) Å have been determined by the neutrons and synchrotron radiation diffraction methods. Nanostructured maghemite with the spinel structure has vacancies in the octahedra…
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Abstract Mono‐ and di‐esterified glycerols were synthesized by the base catalyzed reaction of glycerol with aliphatic dicarboxylic acid esters (C 2 −C 9 ): 2,3‐dihydroxy‐propyl oxalate ( 2 ), 1,3 dioxalyloxy propan‐2‐ol ( 3 ), 1,3‐dimethoxyoxalyloxy propan‐2‐ol ( 5 ), 2,3‐dihydroxy‐propyl malonate ( 6 ), 2,3‐dihydroxy…
We’ve built this digital research platform to provide academics everywhere with fast, stable and secure digital access to our library of over 110,000 scholarly books and 800,000 journal articles. We’ve tested the platform in close cooperation with leading academic institutions. If you have any questions or you notice…
Poly(ethylene glycol) (PEG) monolayer was formed through the chemisorption of a vapor phase organosilane. Photochemically cleaned silicon substrate covered with native oxide (SiO2/Si) was exposed to a vapor of an organosilane, that is, 2-(methoxy[polyethyleneoxy]propyl) trimethoxysilane (MPEOPS) for 1-7 h at 150 degre…
Existence of water droplets on an outdoor high voltage insulator surface changes the electric field flux and its equipotential distribution. The water droplets may appear in different forms and sizes, therefore the form is defined by the angle shape between the surface of the water droplet and that of the insulator su…
The X-ray powder diffraction, dielectric and Raman studies of the (1 − x) PbMg1/3Nb2/3O3–xPbTiO3 (0 ≤ x ≤ 0.38) single crystals were performed in a wide temperature range. The results of these complementary studies revealed that with the increase in PT content, the relaxor behaviour transforms into the ferroelectric o…
Aerosol particles formed from the bursting of small gas bubbles emitted from the anode and cathode electrodes during electrolytic chrome plating were measured with a laboratory apparatus. The measured aerosol particle emission factors were about 5.15 mg particles/amp-hour or 3.81 mg Cr+ 6/amp hour. The cathode gases g…
Abstract Flexible optically rewritable reflective TN LC display based on photoalignment technology has been demonstrated. The rewritable display does not require any electronic scheme, power supply, or conductive layers, when operating. Such a display can erase and write images for many times because of LC alignment r…
A multilayer piezoelectric ceramic/polymer composite with 2–2 connectivity was fabricated by thermoplastic green machining after co‐extrusion. The multilayer ceramic body was composed of piezoelectrically active lead zirconate titanate (PZN)–lead zinc niobate (PZN)‐lead zirconate titanate (PZT) layers and electrically…
The high mobility of austenite-martensite interfaces is a characteristic of a thermoelastic martensitic transformation. Internal friction and elastic constants are very suitable probes to analyze this mobility. In this work, resonant ultrasound spectroscopy, differential scanning calorimetry, and neutron powder diffra…
Of all the potential sources of contamination in microelectronics manufacturing, water is the most significant – being necessary at different stages of the production process. John Hutcheson of Hutch 2 O looks at how this potential problem can be avoided.
Homogeneous cement-bonded particleboards 6 mm in thickness were made from maize stalk with Portland cement and calcium chloride. Boards were produced at two levels of cement/maize stalk ratio and three levels of additive concentration and board density, giving 18 treatment combinations. Modulus of rupture (MOR), modul…
Polycrystalline boratotungstates of composition Ln 3 BWO 9 (Ln = Pr, Nd, Sm, Gd, Tb, Dy) are prepared by solid-phase synthesis and structurally studied. The structures are refined using the Rietveld method for hexagonal space group P 6 3 ( Z = 2). The boratotungstate structures are frameworks. The rare-earth cations i…