Materials Literature
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A luminescent d−f hybrid containing a [Re(bpy)(Ar)(CO) 3 ] + chromophore and a gadolinium ion bound in a DO3A-derived binding pocket has been prepared. This complex combines long-lived luminescence from the 3 MLCT state of the transition metal chromophore with high relaxivity, making it suitable for MRI imaging and lu…
In traditional DNA melting assays, the temperature of the DNA-containing solution is slowly ramped up. In contrast, we use 300 ns laser pulses to rapidly heat DNA bound gold nanoparticle aggregates. We show that double-stranded DNA melts on a microsecond time scale that leads to a disintegration of the gold nanopartic…
We report a highly flexible light-emitting device in which inorganic nanowires are the optically active components. The single-crystalline ZnO nanowires are grown at 80 degrees C on flexible polymer-based indium-tin-oxide-coated substrates and subsequently encapsulated in a minimal-thickness, void-filling polystyrene…
The self-ordering of nanoporous anodic aluminum oxide (AAO) in the course of the hard anodization (HA) of aluminum in sulfuric acid (H2SO4) solutions at anodization voltages ranging from 27 to 80 V was investigated. Direct H2SO4-HA yielded AAOs with hexagonal pore arrays having interpore distances D(int) ranging from…
The objective of the present work is to investigate, from the open literature, the recent developments in the rheology of silica and organoclay nanocomposites. In particular, this paper focuses on general trends of the linear viscoelastic behaviour of such nanocomposites. Hence, the variations of the equilibrium shear…
The hot-electron attenuation length in thin Au films has been determined by means of ballistic electron emission microscopy on $\mathrm{Au}∕\mathrm{Si}(111)$, $\mathrm{Au}∕\mathrm{Si}(001)$, and $\mathrm{Au}∕\mathrm{Ga}\mathrm{As}(001)$ Schottky diodes. The attenuation length measured for $\mathrm{Au}∕\mathrm{Ga}\math…
Accurate interpretation of recruitment rate measurements of microscale particles, such as cells and microbeads, to biofunctional surfaces is difficult because factors such as uneven ligand distributions, particle collisions, variable particle fluxes, and molecular-scale surface separation distances obfuscate the abili…
PURPOSE: This study aimed to develop a manganese chloride (MnCl2)-based phantom model that would allow progressive quantitative assessment of tissue hydration based on observed magnetic resonance (MR) imaging signal intensity (SI) linearity characteristics. MATERIALS AND METHODS: The study was performed using a progre…
In this brief, various approaches for the realization of transparent photodiodes based on bulk heterojunction blends of poly-3-hexylthiophene and [6,6]-phenyl C61-butyric acid methyl ester are studied. The choice of the constituents of the device is discussed concerning transmittance and light-detecting properties as…
Quadrupolar spin-lattice relaxation effect was used to study the temperature dependence of the correlation of electric field gradient (EFG) observed by (63)Cu and (65)Cu NMR in the liquid and supercooled liquid states of Pd(43)Cu(27)Ni(10)P(20) metallic glass forming system. The correlation time of EFG was shown to ha…
Magnetic transmission x-ray microscopy (M-TXM) is used to image domain walls in magnetic ring structures formed by a 300nm wide, 24nm thick Ni81Fe19 nanowire. Both transverse- and vortex-type domain walls are observed after application of different field sequences. Domain walls can be observed by comparing images obta…
Orbital ordering state of 3 d electrons in YTiO 3 has been studied by magnetic Compton profile (MCP) measurement for crystallographic directions of [100] ( a -axis) and [001] ( c -axis). The magnetic effect of the observed MCP leads to the spin moment that is equal to the saturated magnetic moment within the estimated…
Abstract The rheological properties of a polyamide 6/clay nanocomposite with a low loading of clay (1 wt %) were studied. Linear viscoelastic measurements in oscillatory and steady shear with small strain amplitudes were carried out. The nanocomposite exhibited a higher elastic modulus, viscous modulus, and complex vi…
Abstract Four binary polymer blends containing poly [ethylene‐co‐(acrylic acid)] (PEAA) as one component, and poly(4‐vinyl phenol‐co‐2‐hydroxy ethyl methacrylate) (P4VPh‐co‐2HEMA) or poly(2‐ethyl‐2‐oxazoline) (PEOx) or poly(vinyl acetate‐co‐vinyl alcohol) (PVAc‐co‐VA) or poly (vinylpyrrolidone‐co‐vinyl acetate) (PVP‐c…
The temperature dependent electron spin resonance (ESR) studies on Bi(1−x)CaxMnO3 (x=0.4, 0.45, and 0.5) having a triclinic structure were carried out to understand the spin dynamics, short-range magnetic interactions, and micromagnetic phase formation in these materials. The phase transition into charge-ordered (CO)…
An analytical, complete framework to describe the current–voltage (I–V) characteristics of organic diodes without the use of previous approaches, such as injection or bulk-limited conduction is proposed. Analytical expressions to quantify the ratio between injection and space-charge-limited current from experimentalI–…
Abstract Electrodeposition of manganese‐ and copper‐doped ZnO wires into polycarbonate membranes, from an aqueous solution containing 0.05 mol dm −3 Zn(NO 3 ) 2 + 0.01 mol dm −3 Mn(NO 3 ) 2 + 0.0005 mol dm −3 Cu(NO 3 ) 2 + 0.0075 mol dm −3 lactic acid, pH = 4.7 was investigated using linear sweep voltammetry and elect…
We have used density functional perturbation theory to investigate the stiffness of interatomic bonds in small clusters of Si, Sn, and Pb. As the number of atoms in a cluster is decreased, there is a marked shortening and stiffening of bonds. The competing factors of fewer but stiffer bonds in clusters result in softe…
Superconductivity in the ternary intermetallics of La 3 Ni 4 X 4 (X = Si and Ge) with the combination of AlB 2 and BaAl 4 layers is reported. Both compounds are type II superconductors with critical temperatures ( T c ) of 1.0 and 0.70 K for X = Si and Ge, respectively. The lower and the upper critical fields ( H c1 (…
The dispersion behavior of polystyrene-coated iron oxide nanoparticles, referred to as FeOx@PS, is explored in the Theta-solvent cyclohexane in dependency of the temperature, particle size, and polymer concentration. Two different transitions are observed. A volume transition of the particle shell occurs on crossing t…