Materials Literature
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The single-particle excitations which control the opening of the pseudogap in the cuprate superconductors at some temperature ${T}^{\ensuremath{\ast}}$ are considered to derive their specific local spectral features from resonant pairing, whereby charge carriers get momentarily trapped on dynamically deformable molecu…
Dinuclear molybdenum(VI) peroxo complexes containing Mannich base ligands having formulae [Mo2O4(O2)2L-L(H2O)2] · H2O [where L-L = N-[1-morpholinobenzyl] acetamide (MBA), N-[1-piperidinobenzyl] acetamide (PBA), N-[1-morpholino(-4-nitrobenzyl)] benzamide (MPNBB), N-[1-piperidino(-3-nitrobenzyl)] benzamide (PMNBB), N-[1…
An improved procedure for the preparation of 28-norbrassinolide is described. The key step of the whole process was the construction of the side-chain carbon skeleton, which was achieved by successive addition of C23–C24 and C25–C27 fragments to 22C-steroidal aldehyde via the Normant reaction and Claisen rearrangement…
The high surface area and controlled pore size of mesoporous materials made them efficient support for the dispersion of nanoparticles. In particular, highly dispersed Pt-loaded mesoporous materials are interesting systems for nanotechnology and catalysis. The structural, textural, and surface properties of a mesoporo…
Purpose The purpose of this paper is to investigate the stress distribution in shape memory alloy (SMA) composite due to phase transformations in the fiber in view of the applied boundary conditions on the matrix. Design/methodology/approach A consistent homogenization of a SMA wire‐reinforced polymer composite volume…
Free electron-hole (e-h) pair generation from excitons in armchair-edged graphene nanoribbons (AGNRs) is theoretically investigated. We consider the generation of free e-h pairs by the Auger ionization of exciton-exciton scattering. We calculate e-h pair-generation times in a tight-binding approximation and found that…
Abstract Time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) was used to study a number of processes involving thiol‐based self‐assembled monolayers (SAMs) on nontextured (polycrystalline) gold (Au) films deposited on Si wafers. ToF‐SIMS turned out to be a convenient and versatile semiqualitative technique which…
The Discrete-Continuous Model, a coupling between dislocation dynamics and finite elements simulations, is used for modelling size effects in the mechanical properties of single-crystal superalloys. Both formation and evolution of the dislocation microstructures are analysed, and the crucial role of the storage of sig…
An excitation energy transfer in a bulk heterojunction based on freestanding silicon nanocrystals (Si-NCs) and conjugated polymers {poly(3-hexylthiophene) (P3HT), poly[2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV)} is demonstrated. The electrochemical etching process is employed for fabrication of f…
The colloidal stability of cationic 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) liposomes was measured in the presence of guar, carboxymethyl guar, hydroxypropyl guar (HPG), and in mixtures of HPG with boric acid. Carboxymethyl guar induced DOTAP aggregation, presumably by bridging flocculation. The interaction w…
Abstract New analyses of the frequency equations relating Young’s modulus to the flexural resonant frequencies of bars of uniform rectangular, square, or circular cross section have expanded the practical slenderness ratio range, over which these equations can be used, while maintaining the precision of the older equa…
Using analysis and simulation, we show how ordered arrays of microcapsules in solution can be harnessed to propagate chemical signals in directed and controllable ways, allowing the signals to be transmitted over macroscopic distances. The system encompasses two types of capsules that are localized on an adhesive surf…
Polyurethanes (PU) based on toluene diisocyanate (TDI) and polypropylene glycol 2000 (PPG) were reacted with an epoxy resin (EP) to prepare interpenetrating polymer networks (IPNs). Three kinds of electroconductive adhesives were prepared by dispersing nano-graphite (NanoG) into different matrices, i.e., pure PU, cros…
Linear polystyrene-stabilized PdO nanoparticles generated by thermal decomposition of palladium acetate have high catalytic activity for Sonogashira coupling in water under copper-free conditions. The catalyst was recovered and reused at least four times without any loss of catalytic activity.
The formation of liquid bridges between planar and conical substrates is analyzed macroscopically taking into account the line tension. Depending on the value of the line tension coefficient tau and geometric parameters of the system one observes two different scenarios of liquid bridge formation upon changing the flu…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTThin Films of Block Copolymer−Homopolymer Blends with a Continuously Tunable Density of Spherical MicrodomainsJohn M. Papalia†‡, Andrew P. Marencic†, Douglas H. Adamson‡⊥, Paul M. Chaikin‡§, and Richard A. Register*†‡View Author Inf…
We present the latest generation of superconductor–insulator–ferromagnet–superconductor Josephson tunnel junctions with a step-like thickness of the ferromagnetic (F) layer. The F-layer thicknesses d 1 and d 2 in both halves were varied to obtain different combinations of positive and negative critical current densiti…
Abstract This work prepared poly(ethylene glycol‐co‐1,3/1,4‐cyclohexanedimethanol terephthalate) (PETG)/organoclay nanocomposites via a melt intercalation process and investigated the influences of organoclay aspect ratio and organoclay content on the dispersed state, mechanical, thermal, gas barrier, and heat recover…
The unprotonated and protonated monoreduced forms of the polyazaaromatic Ru(II) coordination complexes [Ru(tap)(3)](2+) and [Ru(tap)(2)(phen)](2+) (tap = 1,4,5,8-tetraazaphenanthrene ; phen = 1,10-phenanthroline), that is, [Ru(tap)(3)](*+), [Ru(tap)(2)(phen)](*+), [Ru(tap)(2)(tap-H)](*2+), and [Ru(tap)(tap-H)(phen)](*…
ABSTRACT The Lattice energy of a cubic nickel crystal has been calculated by using the embedded atom method. The embedding energy has been determined by means of quantum mechanical approximations. The lattice energy changes of the static structure including 864 atoms with Bain and shear stresses have been obtained. Th…