Materials Literature
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A truly modern treatment of materials that can hold a magnetic field. Covers cutting-edge materials with many important technical applications. Includes examples and problems along with computer solutions.
The results of a systematic XPS study, under high controlled conditions, of different basic oxides of transition metals, alkali and alkaline-earth metals are presented; the XPS data of some hydroxides and peroxides are also reported. Variations of the O 1s binding energies are analysed and one point of interest is the…
Nanostructured Materials (NsM) are materials with a microstructure the characteristic length scale of which is on the order of a few (typically 1–10) nanometers. NsM may be in or far away from thermodynamic equilibrium. NsM synthesized by supramolecular chemistry are examples of NsM in thermodynamic equilibrium. NsM c…
El estudio comparativo de la cristalinidad de la illita calibrada en las escalas Kubler y CIS realizado en el presente articulo pone en evidencia las diferencias existentes entre los valores limite de la anquizona para ambas escalas. La adopcion de la escala CIS para la determinacion de la cristalinidad requiere la re…
Chitin- graft -poly(2-methyl-2-oxazoline)/poly(vinyl alcohol) (PVA) blends were characterized by means of analytical pyrolysis techniques such as temperature-programmed pyrolysis−mass spectrometry (TPPy−MS), TPPy−gas chromatography (TPPy−GC) and Py−GC mainly in terms of their miscibility and the site of the intermolec…
A partial monolayer of Au strongly modifies the kinetics of water adsorption and formation on the stepped Pt(335) surface. The effects are more than passivation. With a Au coverage of 0.7 ML as measured by Auger spectroscopy, saturation H and O adsorption are only 15% and 8.5%, respectively, of their values on bare Pt…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTZeolite-Coated Optical Microfibers for Intrazeolite Photocatalysis Studied by in Situ Solid-State NMRAjit R. Pradhan, Megan A. Macnaughtan, and Daniel RafteryView Author Information H. C. Brown Laboratory, Department of Chemistry Purdue University, West Lafayette, Indi…
A phase field concept for interface motion in general multi-phase systems with anisotropic interfacial energy is studied. We allow the anisotropy to be even crystalline which leads to a polygonial Wulff shape. A sharp interface model which appears as the limit of small interfacial thickness is stated. Through a series…
1. INTRODUCTION: WEIGHT UNBIASED MONTE CARLO ESTIMATES Integral equations, linear functionals Terminating Markov chains Standard weight estimates in the Monte Carlo method, biasedness Variances of the standard estimates The main approaches to variance reduction The use of recurrent representations Randomization Vector…
Consiglio Nazionale delle Ricerche - Biblioteca Centrale - P.le Aldo Moro, 7, Rome / CNR - Consiglio Nazionale delle Richerche
The structure of micelles of an asymmetric polystyrene−polyisoprene (PS−PI) diblock copolymer has been studied in di- n -butyl phthalate (DBP), which is a slightly selective solvent for PS. The polymer has a molecular weight of 11 500 for the fully deuterated d -PS block and 48 500 for the PI block. Contrast variation…
Artificial photosynthetic reaction centers have been constructed on a protein surface by cofactor reconstitution, which mimic the function of photosynthetic organisms to convert light energy to chemical potential in the form of long-lived charge-separated states. They feature a ruthenium tris(2,2‘-bipyridine) moiety a…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTChiral Hyperbranched Dendron AnaloguesAlexander Sunder, Rolf Mülhaupt, Rainer Haag, and Holger FreyView Author Information Freiburger Materialforschungszentrum FMF und Institut für Makromolekulare Chemie der Albert-Ludwigs-Universit…
Poly(methyl methacrylate)- b -poly( n -butyl acrylate)- b -poly(methyl methacrylate) triblock copolymers have been prepared by ligated anionic polymerization (LAP; 8K-50K-8K) and atom transfer radical polymerization (ATRP; 9K-51K-9K). Size exclusion chromatography, nuclear magnetic resonance, and differential scanning…
Degenerate four-wave mixing measurements, using 45 ps pulses at 1064 nm, have been used to determine the magnitude of the third-order optical susceptibility tensor for thin films of a conjugated porphyrin polymer. The time dependence of the signals indicates that the dominant response is fast relative to the duration…
The growth and interaction of Ag with the TiO 2 (110) (1 × 1) and (1 × 2) surfaces were studied by X-ray photoemission spectroscopy (XPS), low-energy ion scattering (LEIS), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM). At 300 K, both LEIS and STM data indicate that Ag grows three-dim…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTDirect Observation of the "Pac-Man" Effect from Dibenzofuran-Bridged Cofacial BisporphyrinsYongqi Deng, Christopher J. Chang, and Daniel G. NoceraView Author Information Department of Chemistry, 6-335 Massachusetts Institute of Technology 77 Massachusetts Avenue Cambri…
This second paper in this series regarding the relationship between structure and viscoelastic properties of multiblock polyurethane elastomers presents the results of varying segmental incompatibility at fixed segment length and composition. Three series of amorphous polyurethanes with pendant trimethylammonium group…
Energy barriers for different moves of a single Rh adatom in the vicinity of steps on Rh(111) surface are studied with molecular statics. Interatomic interactions are modeled by the semi-empirical many-body Rosato-Guillope-Legrand potential. We calculate systematically barriers for the descent at straight steps, steps…
The structural basis for the aggregation-induced optical properties of colloidal gold nanosphere aggregates is examined by means of electrodynamics calculations. Recently developed methods for calculating the electrodynamic response of aggregates composed of large numbers of small metal nanospheres in a dielectric med…