Materials Literature
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The structure of $\ensuremath{\alpha}\text{\ensuremath{-}}\mathrm{Zr}{\mathrm{W}}_{2}{\mathrm{O}}_{8}$ was optimized at different pressures and its elastic constants were calculated at the B3LYP density functional level of theory. Overall, the relative stiffnesses of the atomic bonds (and linkages), ranked in terms of…
A high quality Mg x Zn 1− x O thin film with up to ∼40 at% Mg incorporation was grown on a quartz substrate by the rf magnetron sputtering technique. The photoconductive type of Mg 0.4 Zn 0.6 O metal–semiconductor–metal ultraviolet detector was prepared. The ratio of the ultraviolet to visible was more than four order…
The intracellular accumulation of low molecular mass organic compounds in response to stressful conditions was investigated in the thermophilic bacterium Petrotoga miotherma, a member of the order Thermotogales. This led to the discovery of a new solute, whose structure was established as alpha-D-mannopyranosyl-(1-->2…
Abstract A new approach to permanent hydrophilic modification of material surfaces is demonstrated using the deposition of nanoscaled functional coatings in RF plasmas at low temperatures under rivaling deposition/etching conditions. The incorporation of nitrogen and the generation of free radicals in a‐C:H films yiel…
A two-staged, uniaxial magnetoresistive effect has been discovered in SrCo6O11 having a layered hexagonal structure. Conduction electrons and localized Ising spins are in different sublattices but their interpenetration makes the conduction electrons sensitively pick up the stepwise field dependence of magnetization.…
Abstract The ability of the ligands 4,4′‐bipyrazolyl (H 2 bpz ), 1,4‐bis(4′‐pyrazolyl)benzene (H 2 bpzb ), and 4,4′‐bipyridazine ( bpdz ) to link two dioctahedral LNi 2 units has been examined. Thefollowing complexes were prepared: [L 1 Ni II 2 (H bpz )][BPh 4 ] ( 6 [BPh 4 ]), [L 1 Ni II 2 ( bpdz )][ClO 4 ] 2 ( 7 [ClO…
The neutral heteroleptic hexacoordinate silicon(IV) complexes 4 and 5 (SiO(6) skeletons) and the neutral pentacoordinate silicon(IV) complexes 7-9 (SiO(4)N skeletons) were synthesized, starting from the hexacoordinate precursor 2 and the pentacoordinate precursor 6, respectively. In these reactions, two monoanionic cy…
We develop a complete set of equations governing the evolution of a sharp interface separating two fluid phases undergoing transformation. In addition to the conventional balances for mass, linear momentum and energy these equations include also a counterpart of the Gibbs–Thomson equation familiar from theories for cr…
Nature is an exquisite designer of inorganic materials using biomolecules as templates. Diatoms create intricate silica wall structures with fine features using the protein family of silaffins as templates. Marine sponges create silica spicules also using proteins, termed silicateins. In recent years, our group and ot…
A near-monodisperse styrene-functionalized poly[2-(dimethylamino)ethyl methacrylate] (PDMA) macromonomer was evaluated as a reactive steric stabilizer for the preparation of poly(2-vinylpyridine (P2VP) latexes via emulsion polymerization. The solution pH was shown to be a critical parameter for successful syntheses: s…
Abstract A series of new lanthanide borohydride complexes supported by bulky guanidinate ligands [(Me 3 Si) 2 NC(N‐Cy) 2 ] 2 Ln(μ‐BH 4 ) 2 Li(THF) 2 [Ln = Nd ( 1 ), Sm ( 2 ), Yb ( 3 )] was synthesized by the reaction of related tris(borohydride)s Ln(BH 4 ) 3 (THF) 2 with a twofold molar excess of [(Me 3 Si) 2 NC(N‐Cy)…
ABSTRACT Although microbes have been shown to alter the dissolution rate of carbonate minerals, a mechanistic understanding of the consequences of microbial surface colonization on carbonate dissolution has yet to be achieved. Here we report the use of vertical scanning interferometry (VSI) to study the effect of Shew…
The electrochemistry of a series of dendrimers was examined at the interface between two immiscible electrolyte solutions (ITIES), enabling study of non-redox-active dendrimers. Different generations of poly(propylenimine) (DAB-AM-n) and poly(amidoamine) (PAMAM) dendrimers were studied. In their protonated states, the…
PURPOSE: To evaluate cellular labeling of immune cells using micron-sized iron oxide particles (MPIOs) and evaluate the MR relaxivity and MRI detection of the labeled cells. MATERIALS AND METHODS: Immune cells isolated from mice and rats were labeled with three different sizes of MPIO particles (0.35, 0.90, or 1.63 mi…
This paper describes the recent progress at Nottingham towards the exploitation of the unique properties of scCO(2) (supercritical carbon dioxide) for the preparation of polymeric scaffolds for tissue engineering applications and new devices for controlled drug delivery, as well as the synthesis of novel block copolym…
Density-functional electronic structure studies of a prototype interface between a paramagnetic metal and an antiferromagnetic (AFM) insulator (CaRuO(3)/CaMnO(3)) reveal the exponential leakage of the metallic electrons into the insulator side. The leaked electrons in turn control the magnetism at the interface via th…
The mechanical properties of polyelectrolyte multilayer films built up with poly- l -lysine (PLL) and hyaluronan (HA) can be tuned using a chemical cross-linker. The present study is aimed at showing that the viscoelasticity can also be changed by exposing a (PLL/HA) m film alternatively to a solution of poly(sodium 4…
Abstract Solid oxide fuel cell (SOFC) development work at Forschungszentrum Juelich (FZJ) is extensive, ranging from fundamental materials' design through to near‐commercial prototype CHP systems. Considerable advances have been demonstrated in the past years concerning the improvement of device performance by identif…
High Resolution Image Download MS PowerPoint Slide Mo V −Mo VI mixed valence polyoxometalates (POMs), H 7 [β-P(Mo V ) 4 (Mo VI ) 8 O 40 ] ( 1 ), (NH 4 ) 10 [(Mo V ) 4 (Mo VI ) 2 O 14 (O 3 PCH 2 PO 3 ) 2 (H 2 OPCH 2 PO 3 ) 2 ]·15H 2 O ( 2 ), and [ε-P(Mo V ) 8 (Mo VI ) 4 O 36 (OH) 4 {La(H 2 O) 2.5 Cl 1.25 } 4 ]·27H 2 O…
Abstract In this study, thymine and melamine were introduced as nucleating agents for poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyvalerates) (PHBVs) and poly(3‐hydroxybutyrate) (PHB), and their effects were compared with that of boron nitride (BN). Because the overall crystallization rate of PHBVs decreases significantly wit…