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作者信息未提供1991-12-01Science and Engineering of Composite Materials

Observations of the dynamics and acoustics of travelling bubble cavitation

Steven L. Ceccio、Christopher E. Brennen1991-12-01Journal of Fluid Mechanics

Individual travelling cavitation bubbles generated on two axisymmetric headforms were detected using a surface electrode probe. The growth and collapse of the bubbles were studied photographically, and these observations are related to the pressure fields and viscous flow patterns associated with each headform. Measur…

Ultrasound and Cavitation PhenomenaCavitation Phenomena in Pumps

Scaling behavior in shaving cream

D. J. Durian、David A. Weitz、David J. Pine1991-12-01Physical Review A

The coarsening of a three-dimensional foam is studied with multiple light-scattering techniques. Scaling behavior is observed with the average bubble diameter growing in time as ${\mathit{t}}^{\mathit{z}}$ where z=0.45\ifmmode\pm\else\textpm\fi{}0.05. Changes in the packing conditions during coarsening give rise to a…

Material Dynamics and PropertiesPickering emulsions and particle stabilizationBlock Copolymer Self-Assembly

A new lipophilic gadolinium chelate as a tissue‐specific contrast medium for MRI

Hanns‐Joachim Weinmann、Gabriele Schuhmann‐Giampieri、Heribert Schmitt‐Willich 等 6 位作者1991-12-01Magnetic Resonance in Medicine

Gd-Ethoxybenzyl-DTPA (Gd-EOB-DTPA) is a highly water-soluble paramagnetic contrast agent. Due to its protein binding of about 10% and its lipophilic residue, Gd-EOB-DTPA exhibits both renal (30% of the dose) and hepatobiliary (70%) excretion in rats. Despite its lipophilic character, the compound displays a low toxici…

MRI in cancer diagnosisLanthanide and Transition Metal ComplexesMagnetism in coordination complexes

Bond dissociation energies in DMSO related to the gas phase values

F. G. Bordwell、Jin‐Pei Cheng、G.‐Z. JI 等 5 位作者1991-12-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBond dissociation energies in DMSO related to the gas phase valuesF. G. Bordwell, Jinpei Cheng, Guo Zhen Ji, A. V. Satish, and Xianman ZhangCite this: J. Am. Chem. Soc. 1991, 113, 26, 9790–9795Publication Date (Print):December 1, 1991Publication History Published online1 May…

Chemical Thermodynamics and Molecular StructureAdvanced Chemical Physics StudiesThermal and Kinetic Analysis

Magnetocrystalline anisotropy and orbital moments in transition-metal compounds

G. H. O. Daalderop、Paul J. Kelly、M. F. H. Schuurmans1991-12-01Physical review. B, Condensed matter

The magnetocrystalline anisotropy energy and anisotropy of the orbital angular momentum have been calculated from first prinicples for Co and for a variety of intermetallic compounds including ${\mathrm{YCo}}_{5}$. For all compounds the predicted easy axes are in agreement with experiment. A strong correlation between…

Rare-earth and actinide compoundsMagnetic Properties of AlloysMagnetic and transport properties of perovskites and related materials

Origin of superparamagnetism in nickel oxide

James T. Richardson、D. I. Yiagas、Brian S. Turk 等 5 位作者1991-12-01Journal of Applied Physics

It has been known for some time that particles of nickel oxide of less than about 100 nm in size show superparamagnetism that increases as the particle size decreases. The origin of the particle magnetic moment responsible for this behavior has never been fully explained. This research indicated that the size of the p…

Iron oxide chemistry and applicationsTransition Metal Oxide NanomaterialsElectron and X-Ray Spectroscopy Techniques

Electrical and optical properties of boron-doped ZnO thin films for solar cells grown by metalorganic chemical vapor deposition

Wilson W. Wenas、Akira Yamada、Kiyoshi Takahashi 等 5 位作者1991-12-01Journal of Applied Physics

The highly conductive and textured ZnO films have been grown by metalorganic chemical vapor deposition using diethylzinc and H2O as reactant gases. The B2H6 gas has also been successfully used as an n-type dopant gas to obtain highly conductive ZnO with a sheet resistivity for 2-μm-thick film as low as 10 Ω/⧠ at the v…

Thin-Film Transistor TechnologiesZnO doping and propertiesCopper-based nanomaterials and applications

The Electrochemical Behavior of Calcium Electrodes in a Few Organic Electrolytes

Doron Aurbach、R. Skaletsky、Y. Gofer1991-12-01Journal of The Electrochemical Society

The electrochemical behavior of calcium electrodes in a few important organic electrolyte has been investigated. The solvents used included acetonitrile, tetrahydrofuran, γ‐butyrolactone, and propylene carbonate, and the salts included , , , and tetrabutyl ammonium salts ( , ). Various techniques, including cyclic vol…

Synthesis and properties of polymersConducting polymers and applicationsAdvanced Battery Materials and Technologies

Quantum confinement effects in semiconductor clusters

M. V. Rama Krishna、Richard A. Friesner1991-12-01OpenAlex

The band gaps, band structure, and excited-state (exciton) energies of CdS, GaAs, and GaP semiconductor clusters are calculated using pseudopotentials. In addition, the sensitivity of the exciton energies to the size, shape, crystal structure, and lattice constant of the unit cell are investigated. The calculated exci…

Molecular Junctions and NanostructuresChalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And Properties

Intrinsic dielectric loss in crystals

V. L. Gurevich、A. K. Tagantsev1991-12-01OpenAlex

We review the current theory of intrinsic dielectric loss, that is the loss in a perfect crystal due to anharmonic interaction of a.c. electric field with the phonon system of the crystal. Both ordinary dielectrics and displacive ferroelectrics are considered. The theory predicts dependence of the loss on frequency ω…

Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisGlass properties and applications