Charged diblock copolymers at interfaces
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Electromigration characteristics of copper interconnects
The electromigration characteristics of electroless plated copper interconnects have been investigated under DC and time-varying current stressing. A scheme for selected electroless Cu plating by using 150-AA Co as the seeding layer is reported. The Cu DC and pulse-DC lifetimes are found to be one and two orders of ma…
Interaction of lithotripter-generated shock waves with air bubbles
The shock wave-induced collapse and jet formation of pre-existing air bubbles at the focus of an extracorporeal shock wave lithotripter is investigated using high-speed photography. The experimentally obtained collapse time, ranging from 1 to 9 μs for bubbles with an initial radius R0 of 0.15 to 1.2 mm, agrees well wi…
Grazing incidence x-ray scattering studies of thin films of an aromatic polyimide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGrazing incidence x-ray scattering studies of thin films of an aromatic polyimideBradford J. Factor, Thomas P. Russell, and Michael F. ToneyCite this: Macromolecules 1993, 26, 11, 2847–2859Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Publ…
Illite/smectite formation and potassium mass transfer during burial diagenesis of mudrocks; a study from the Texas Gulf Coast Paleocene-Eocene
Abstract Mudrock samples from a well penetrating Eocene and Paleocene strata (1235-4455 m) of the Texas Gulf Coast have been studied to assess geochemical redistribution in mudrocks during burial diagenesis, and the mechanism by which detrital smectitic illite/smectite (I/S) is transformed into diagenetic illitic I/S.…
Direct observation of the push effect on the oxygen-oxygen bond cleavage of acylperoxoiron(III) porphyrin complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDirect observation of the push effect on the oxygen-oxygen bond cleavage of acylperoxoiron(III) porphyrin complexesKazuya Yamaguchi, Yoshihito Watanabe, and Isao MorishimaCite this: J. Am. Chem. Soc. 1993, 115, 10, 4058–4065Publication Date (Print):May 1, 1993Publication His…
5‐Dimethylamino‐5′‐nitro‐2, 2′‐bithiophene—a New Dye with Pronounced Positive Solvatochromism
The exceptionally large positive solvatochromism of the title compound 1 spans almost the whole visible spectrum. The absorption maxima of 1 give an excellent correlation with the π* values of Kamlet and Taft, which makes it an ideal reference compound for a π* scale that is based on only one indicator dye.
Effects of the dipole moment on charge transport in disordered molecular solids
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of the dipole moment on charge transport in disordered molecular solidsPaul M. Borsenberger and John J. FitzgeraldCite this: J. Phys. Chem. 1993, 97, 18, 4815–4819Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Published inissue 1 Ma…
Interdependence of shear deformations and block copolymer morphology
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInterdependence of shear deformations and block copolymer morphologyKaren I. Winey, Sanjay S. Patel, Ronald G. Larson, and Hiroshi WatanabeCite this: Macromolecules 1993, 26, 10, 2542–2549Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Publi…
Synthesis, characterization, glass transition behavior, and the electronic structure of high-molecular-weight, symmetrically substituted poly(ferrocenylsilanes) with alkyl or aryl side groups
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, glass transition behavior, and the electronic structure of high-molecular-weight, symmetrically substituted poly(ferrocenylsilanes) with alkyl or aryl side groupsDaniel A. Foucher, Ralf Ziembinski, Ben Zhong Tang, Peter M. Macdonald, Jason Massey…
Extended Jones matrix method II
We derive an extended Jones matrix method to treat the transmission of light through birefringent networks, where the incident angle of light and the optical axis of the birefringent media are arbitrary. As an example, we employ the method to analyze the leakage problem of a twisted nematic liquid-crystal display and…
Characterization of nickel/silica catalysts during impregnation and further thermal activation treatment leading to metal particles
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of nickel/silica catalysts during impregnation and further thermal activation treatment leading to metal particlesCatherine Louis, Zheng Xing Cheng, and Michel CheCite this: J. Phys. Chem. 1993, 97, 21, 5703–5712Publication Date (Print):May 1, 1993Publicatio…
Dynamic simulations of flows of bubbly liquids at large Reynolds numbers
Results of dynamic simulations of bubbles rising through a liquid are presented. The Reynolds number of the flow based on the radius and the terminal speed of bubbles is large compared to unity, and the Weber number, which is the ratio of inertial to surface tension forces, is small. It is assumed that the bubbles do…
Interaction energies for blends of poly(methyl methacrylate), polystyrene, and poly(.alpha.-methylstyrene) by the critical molecular weight method
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction energies for blends of poly(methyl methacrylate), polystyrene, and poly(.alpha.-methylstyrene) by the critical molecular weight methodT. A. Callaghan and D. R. PaulCite this: Macromolecules 1993, 26, 10, 2439–2450Publication Date (Print):May 1, 1993Publication Hi…
Ordered structure in blends of block copolymers. 1. Miscibility criterion for lamellar block copolymers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered structure in blends of block copolymers. 1. Miscibility criterion for lamellar block copolymersTakeji Hashimoto, Komei Yamasaki, Satoshi Koizumi, and Hirokazu HasegawaCite this: Macromolecules 1993, 26, 11, 2895–2904Publication Date (Print):May 1, 1993Publication His…
Hydrogen-bonding effect on the photophysical properties of 7-aminocoumarin derivatives
The photophysical properties of 7-amimocoumarin derivatives with different alkylation degrees are studied in water and in different monoalcohols.Specific hydrogen bonds between the solute and protic solvents are considered to explain spectral shifts and internal conversion process.The mechanism for the internal conver…
Crystallographic and EXAFS studies of conformationally designed nonplanar nickel(II) porphyrins
A series of Ni(II) tetraphenylporphyrins with varying β substituents was examined by X-ray crystallography and EXAFS to assess peripheral steric effects on the conformations of the macrocycles. The compounds are the low-spin Ni(II) derivatives of 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrin (1), 2,3,7…
New intercalation compounds of conjugated polymers. Encapsulation of polyaniline in molybdenum disulfide
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew intercalation compounds of conjugated polymers. Encapsulation of polyaniline in molybdenum disulfideMercouri G. Kanatzidis, Rabin Bissessur, D. C. DeGroot, J. L. Schindler, and C. R. KannewurfCite this: Chem. Mater. 1993, 5, 5, 595–596Publication Date (Print):May 1, 1993…
Synthesis and properties of fluorinated polyimides from novel 2,2'-bis(fluoroalkoxy)benzidines
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of fluorinated polyimides from novel 2,2'-bis(fluoroalkoxy)benzidinesAndrew E. Feiring, Brian C. Auman, and Edward R. WonchobaCite this: Macromolecules 1993, 26, 11, 2779–2784Publication Date (Print):May 1, 1993Publication History Published online1 M…
Ion Implantation in Diamond, Graphite and Related Materials
1. Introduction.- 2. Carbon Materials: Graphite, Diamond and Others.- 2.1 Structure and Materials.- 2.1.1 Graphite.- 2.1.2 Graphite-Related Materials.- 2.1.3 Carbon Fibers.- 2.1.4 Glassy Carbon.- 2.1.5 Graphite Intercalation Compounds.- 2.1.6 Diamond.- 2.1.7 CVD Diamond Films.- 2.1.8 Diamond-Like Carbon Films.- 2.2 Pr…