Resource Letter BD-1: Bubble dynamics
This Resource Letter provides a tutorial on bubble and cavitation dynamics and an introduction to its extensive literature.
Materials Literature
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Different rates of smectite illitization in mudstones and sandstones from the Niigata Basin, Japan
Abstract The different rates of smectite illitization have been investigated in interbedded sandstone and mudstone samples from the Neogene to Lower Pleistocene stratigraphy of the Niigata sedimentary basin. For samples of approximately the same age and under the same temperature and pressure conditions, the analytica…
Negative Magnetoresistance and Magnetic Susceptibility of Boronated Graphite
Boronated graphite specimens were prepared from a grafoil heat-treated at 3000°C for 30 min. The transport properties, such as the electrical resistivity, Hall coefficient and transverse magnetoresistance, and the total magnetic susceptibility were measured for the pristine and boronated specimens. For the specimen wi…
Microstructure and optical properties of submicron porous silicon thin films grown at low current densities
The mechanism of porous silicon (PS) film growth remains a debate among researchers. This study investigates the effect of current density (J) and anodization time (t) on the film thickness, optical properties, and microstructure of films grown at low current densities. The samples reported herein were generated from…
Synthesis and liquid crystal alignment properties of new cinnamate-based photocrosslinkable polymers
Because optical buffing can achieve aligning patterns with different azimuthal angles of the liquid crystal directors, photoalignment appears to be a very hopeful technique for designing complex LCD structures. Until recently, most photopolymers provided low anchoring and/or low tilt angles which are unsuitable for in…
Effective preparation of cellulose derivatives in a new simple cellulose solvent
Cellulose with a degree of polymerization up to 650 can be dissolved in dimethyl sulfoxide containing 10 to 20% (w/v) tetrabutylammonium fluoride trihydrate without any pretreatment within 15 min at room temperature. The new solvent can be classified as a non-derivatizing one as concluded from 13C NMR measurements. Th…
Thermodynamics of Oxygen in Molten Ti-Al and Zr-Al Alloys
The solubility of oxygen in molten Ti-Al and Zr-Al alloys equilibrated with solid A1 2 0 3 or Zr0 2 was measured from 1673 to 1973 K. The standard Gibbs energies for the reactions of Al 2 0 3 (s) = 2Al (1, in Ti-Al alloy) + 30 (mass pet, in Ti-Al alloy) and Zr0 2 (s) = Zr (1, in Zr-Al alloy) + 20 (mass pet, in Zr-Al a…
Crystal structure of pentastrontium tris(phosphate) bromide, Sr5(PO4)3Br and of pentabarium tris(phosphate) bromide Ba5(PO4)3Br, two bromoapatites
Article Crystal structure of pentastrontium tris(phosphate) bromide, Sr5(PO4)3Br and of pentabarium tris(phosphate) bromide Ba5(PO4)3Br, two bromoapatites was published on March 1, 2000 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 215, issue 3).
Aging modifiers for extruded LDPE foam
Abstract Aging modifiers help to regulate the isobutane/air interchange in LDPE foams. In the absence of sufficient modifier, the foam will shrivel and collapse. Several glycerol esters are evaluated at four use‐levels for dimensional stability of the foam, antistatic properties, and additive “rub‐off.” Stearamide is…
Crystallization of Amorphous GeSe2 Semiconductor by Isothermal Annealing without Light Radiation
The thermal-induced crystallization process of melt-quenched amorphous GeSe 2 was studied. The low-temperature (LT) form, LT-GeSe 2 and the high-temperature (HT) form, HT-GeSe 2 were observed with Raman spectroscopy, differential scanning calorimetry (DSC) and an X-ray diffractometer. We observed the X-ray diffraction…
Liquid‐crystal‐material technologies for advanced display applications
Abstract— Ions were dissolved into the liquid‐crystal (LC) materials from peripheral materials and were also generated by electric dissociation. Moreover, those ions are partly stabilized in the form of hydrated or solvated ions with polar molecules. As the ions in an LC slab of display panel deteriorate the image qua…
Crystal structure of a hyperzirconium analogue of eudialyte
X-ray diffraction study of a new representative of the eudialyte family ( R = 4.5%, 2347 independent reflections) provided the establishment of a number of characteristic features of its structure associated with a high zirconium content and some other characteristics of the composition. The deficiency of Ca is compen…
Dielectric properties of PZT aerogels
Due to their low sound velocity and high porosity PZT aerogels have an exceptional low acoustic impedance. Therefore they are promising materials for impedance-matched ultrasonic transducers that can be used for ranging and sonar systems or medical imaging devices. Monolithic, nanostructured and open porous PZT aeroge…
Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
Abstract Injection molding of the isotactic polypropylenes polymerized using metallocene and Ziegler-Natta catalysts and having the same molecular weights was performed. Rheological properties and shear-induced crystallization kinetics were measured and their comparative analysis is made. These data are fitted to the…
Crosslinking of chlorine-containing polymers by dicyclopentadiene dicarboxylic salts
Alkali- and alkali-earth-metal salts of dicyclopentadiene dicarboxylic acid (DCPDCA) were prepared and employed as crosslinkers for chlorine-containing polymers such as polychloromethylstyrene (PCMS), chlorinated polypropylene (CPP), polyepichlorohydrin (PECH), and poly(vinyl chloride) (PVC). Thermally reversible cova…
Systematic search of displacive ferroelectrics
Polar structures with pseudosymmetry related to a hypothetical non-polar configuration are considered as good candidates for displacive ferroelectrics. Recently we have developed a procedure for the systematic search of pseudosymmetric structures in the available databases. The aim of the present contribution is the g…
Synthesis of the Water-Soluble, Electrically Conducting Poly(5-Aminonaphthalene-2-sulfonic Acid)
Abstract Poly(5-aminonaphthalene-2-sulfonic acid) 2 can be prepared by oxidative polymerisation of 5- or 8-aminonapthalene-2-sulfonic acid (1a, 1b) with Na2S2O8 or KIO4. This polymer is water soluble, electrically conducting and fluorescent.
A preliminary study of the low‐load lateral impact compression of fabrics
A swinging pendulum is arranged to impact and bounce from a fabric sample. The energy losses during impact compression are calculated from the changes in potential energy of the pendulum after allowing for other losses. It is found that the compression energy loss, calculated from the static characteristics, gives onl…
Dielectric anisotropy of 5CB liquid crystal in a decimeter wavelength range
Parallel and perpendicular components of the dielectric constant for 5CB nematic liquid crystal are measured in a relaxation region. Two frequencies f 1 ≈30 and f 2 ≈350 MHz are determined at which the inversion of the dielectric anisotropy sign is observed. It is shown that the observed sizable high-frequency shift o…
Optical properties of strongly coupledYb2+andCN−ions in alkali halide crystals: Electronic absorption and emission
We have studied absorption and emission spectra of the ${4f}^{14}\ensuremath{\leftrightarrow}{4f}^{13}5d$ electronic transitions of ${\mathrm{Yb}}^{2+}:({\mathrm{CN}}^{\ensuremath{-}}{)}_{n}$ defect complexes in NaCl, KCl, RbCl, and KBr host crystals under concentration variation of both dopants ${\mathrm{Yb}}^{2+}$ a…