Materials Literature
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We have studied the decomposition pathways of both Ca- and Mg-borohydride using density-functional theory (DFT) calculations of the free energy (including vibrational contributions) in conjunction with a Monte Carlo-based crystal-structure prediction method, the prototype electrostatic ground-state (PEGS) search metho…
Abstract A core–shell nanosilica (nano‐SiO 2 )/fluorinated acrylic copolymer latex, where nano‐SiO 2 served as the core and a copolymer of butyl acrylate, methyl methacrylate, and 2,2,2‐trifluoroethyl methacrylate (TFEMA) served as the shell, was synthesized in this study by seed emulsion polymerization. The compatibi…
We observe charge-order fluctuations in the quasi-two-dimensional organic superconductor ${\ensuremath{\beta}}^{\ensuremath{'}\ensuremath{'}}\ensuremath{-}(\mathrm{BEDT}\ensuremath{-}\mathrm{TTF}{)}_{2}{\mathrm{SF}}_{5}{\mathrm{CH}}_{2}{\mathrm{CF}}_{2}{\mathrm{SO}}_{3}$, both by means of vibrational spectroscopy, loc…
The development of PIT fabrication process of iron pnictide superconducting wires and tapes has been reviewed. Silver was found to be the best sheath material, since no reaction layer was observed between the silver sheath and the superconducting core. The grain connectivity of iron pnictide wires and tapes has been m…
Here, we present the static breath figure process for constructing 3-dimensionally conformal microporous films on nonplanar substrates, with a commercially available triblock polymer, polystyrene-b-polyisoprene-b-polystyrene. The polymer can cover the surface of nonplanar substrates with ordered porous morphology desp…
Results of combined experimental and theoretical investigations of elementary chemical reaction processes of CO-CO 2 gas mixtures at nickel/yttria-stabilized zirconia ͑Ni/YSZ͒ solid oxide fuel cell ͑SOFC͒ model anode systems are presented.Temperature-programmed desorption and reaction measurements were performed in or…
Benzene-1,3,5-tricarboxamide (BTA) derivatives with one or three phenylalanine octyl ester (PheOct) moieties were synthesized and their supramolecular polymerization and chiral amplification behavior were investigated in mixing experiments between enantiomer pairs and in mixing with another, achiral BTA component. The…
Sterically stabilized polystyrene latexes were prepared by aqueous emulsion polymerization using a poly(ethylene imine) (PEI) stabilizer in the presence of 4-vinylbenzyl chloride (4-VBC; 1.0 wt % based on styrene). Partial quaternization of the amine groups on the PEI chains by 4-VBC occurs in situ, hence producing a…
We have used in situ low-energy electron microscopy (LEEM) to correlate the atomic and electronic structure of graphene films on polycrystalline Ni with nm-scale spatial resolution. Spatially resolved electron scattering measurements show that graphene monolayers formed by carbon segregation do not support the π-plasm…
Soap-bubble-like structured polyacrylic acid (PAA) nano-nets that comprise interlinked ultrathin nanowires with diameters of 10-35 nm are controllably prepared by a one-step electro-netting process.
Magnetic resonance imaging (MRI) has long been used clinically and experimentally as a diagnostic tool to obtain three-dimensional, high-resolution images of deep tissues. These images are enhanced by the administration of contrast agents such as paramagnetic Gd(III) complexes. Herein, we describe the preparation of a…
Abstract The shape of crystalline particles is recognized as one important parameter for the adjustment of functional properties of inorganic materials. The surfaces of a thermodynamically stable crystal correspond to a set of lattice planes determined by the minimum interface energy. Thus, a morphology deviating from…
This paper presents a computationally efficient physics-based compact model for the Schottky barrier (SB) carbon nanotube field-effect transistor (CNTFET). This compact model includes a new analytical formulation of the channel charge, taking into account the influence of the source and drain SBs. Compact model simula…
We report the development of a straightforward synthesis for colloidally stable germanium nanocrystals for use as a solution-processable precursor for the bottom-up fabrication of functional thin films. SiO(2)-embedded germanium nanocrystals are produced by the reductive thermal processing of sol-gel glasses derived f…
Safer plastics: A novel class of polymers, termed bisphenol-1,2,3-triazole (BPT) polyarylates, was prepared by polycondensation chemistry. They exhibit high-performance and self-extinguishing properties as a result of their heterocyclic nature and a thermally induced structural transformation (see picture).
Abstract La 2 – x Sr x Co 0.5 Ni 0.5 O 4 ± δ (LSCN) is presented as a novel electrode for both solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs). LSCN/10Sc1CeSZ (scandia and ceria stabilised zirconia)/LSCN symmetrical cells were fabricated and characterised by AC impedance spectroscopy under di…
DFT/TDDFT calculations have been carried out for a series of silver and gold nanorod clusters (Ag(n), Au(n), n = 12-120) whose structures are of cigar-type. Pentagonal Ag(n) clusters with n = 49-121 and hexagonal Au(n) clusters with n = 14-74 were also calculated for comparison. Metal-metal distances, binding energies…
Graphene was prepared via carbonization of microwave synthesized metal phthalocyanine, followed by a rapid cooling process. The morphology and structure of the obtained graphene were controlled by the coolants.
Abstract To support the development of hydrogen production by high temperature electrolysis using solid oxide electrolysis cells (SOECs), the effects of operating conditions on the performance of the SOECs were investigated using a one‐dimensional model of a cathode‐supported planar SOEC stack. Among all the operating…
Heavy metal ions (Ni(2+), Zn(2+), and Cr(3+)) can be effectively removed from real polynary metal ions-bearing electroplating wastewaters by a carbonation process, with ∼99% of metal ions removed in most cases. The synchronous formation of layered double hydroxide (LDH) precipitates containing these metal ions was res…