Materials Literature
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Plastic deformation of micron and sub-micron scale specimens is characterized by intermittent sequences of large strain bursts (dislocation avalanches) which are separated by regions of near-elastic loading. In the present investigation we perform a statistical characterization of strain bursts observed in stress-cont…
The fastest growth pattern of layer-by-layer (LBL) assembled films is exponential LBL (e-LBL), which has both fundamental and practical importance. It is associated with "in-and-out" diffusion of flexible polymers and thus was considered to be impossible for films containing clay sheets with strong barrier function, p…
Type I collagen, the predominant protein of vertebrates, polymerizes with type III and V collagens and non-collagenous molecules into large cable-like fibrils, yet how the fibril interacts with cells and other binding partners remains poorly understood. To help reveal insights into the collagen structure-function rela…
Composites of carbon nanotubes and conducting polymers can be prepared via chemical synthesis, electrochemical deposition on preformed carbon nanotube electrodes, or by electrochemical co-deposition. The composites combine the large pseudocapacitance of the conducting polymers with the fast charging/discharging double…
The direct correlation between gas-phase and solid-state supramolecular structures of massive protein-sized polyoxometalate clusters (ca. 21 kDa) has been probed using cryospray mass spectrometry. In their Communication on page 4388 ff., L. Cronin et al. show that such clusters can be crystallized into the solid state…
Abstract The chemical attachment of Fischer tungsten carbene molecules around the cylindrical walls of SBA‐15 causes a pore‐width diminution with respect to the diameters of the voids existing in the pristine substrate. The attachment is made via a bridging unit of aminopropyltriethoxysilane (APTES) that, at its ethox…
Phase‐transformation‐induced twinning in orthorhombic barium cerate (BaCeO 3 ) has been analyzed using transmission electron microscopy. Reflection twins with boundaries lying in {110) and {112) are generated by loss of point group symmetry elements during solid‐state phase transition along the sequence of Pm 3 m → R…
The conical rigorous coupled-wave analysis (RCWA) is employed to calculate the polarization conversion through the excitation of surface plasmons on metallic gratings. Various examples are examined with this numerical scheme. Our calculated results are consistent with those obtained from experiment and from other nume…
Electromagnetic response of individual boron nitride nanotubes (BNNTs) has been studied by spatially resolved electron energy loss spectroscopy (EELS). We demonstrate how dedicated EELS methods using subnanometer electron probes permit the analysis of local dielectric properties of a material on a nanometer scale. The…
A one-dimensional transient model of a tubular solid oxide fuel cell stack is proposed in this paper. The model developed in the virtual test bed (VTB) computational environment is capable of dynamic system simulation. This model is based on the electrochemical and thermal modeling, accounting for the voltage losses a…
Abstract An improved non‐isothermal kinetic model was developed based on mass balance and Arrhenius laws using a second‐order reversible reaction capable of predicting the extent of transesterification reaction ( X ) and the degree of randomness ( RD ) in poly(ethylene terephthalate) (PET)/poly(ethylene naphthalene‐2,…
Line shape modifications induced by thermal treatment in the optical absorption and electron paramagnetic resonance (EPR) signals associated with the ${E}_{\ensuremath{\gamma}}^{\ensuremath{'}}$ center are experimentally investigated in various types of $\ensuremath{\gamma}$-irradiated amorphous silicon dioxide $(a\te…
The aim of the study was to investigate the possibility of incorporating non-ionic surfactants into pellets produced from microcrystalline cellulose by the process of extrusion/spheronization and the properties of the pellets. A hydrophilic surfactant, polysorbate 60 (PS 60), and two hydrophobic surfactants, sorbitan…
Two-phase composites La 0.7 Sr 0.3 MnO 3 /Ta 2 O 5 are synthesized and their magnetization and low-field magnetoresistance (LFMR) characteristics are investigated. It is found that a small amount of Ta ions enter into LSMO grains near the grain surface region, resulting in the reduction of the cell volume, and consequ…
A microstructure-level finite element machining model has been developed to simulate the machining of carbon nanotube (CNT) reinforced polymer composites. The model integrates a failure model with a previously developed microstructure-based material model. The competition between ductile and brittle modes of failure i…
Volcano-like hierarchical superhydrophobic surface synthesized via facile one-step secondary anodic oxidation,
Efficient bioconversion of palm oil by-products to green materials serves as a prominent way to overcome wastage. Generally, major palm oil by-products such as palm acid oil (PAO) and palm kernel acid oil (PKAO) are used for animal feed. This pioneer study investigated the ability of Cupriavidus necator H16 (ATCC 1769…
Several catalytic protocols for the oxidation of hydrosoluble substrates are presented that employ totally inorganic and robust polyoxometalate-based catalysts as well as porphyrin sensitizers, fullerenes and hybrid conjugates. Strategies for the implementation of the system stability and efficiency are discussed.
The paper concerns two aspects of the entropy in mesogenic systems: (i) the entropy jump (Delta S (0) NI) at the phase transition from the isotropic liquid (I) to the nematic liquid crystalline state (N), and (ii) the entropy increment (Delta S) caused by the ordering action of the probing electric field applied to th…
Abstract The purpose of this article is to determine the structure of γ‐glycidoxypropyltrimethoxysilane (γ‐GPS) on glass fiber surfaces. The interfacial adhesion of glass fiber–polymer can be improved by the silane treatment of the glass fiber. To change the composition of the glass and regenerate to the hydroxyl grou…