Materials Literature
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We report on the local magnetic properties of ultrathin bcc Fe films grown on a Ag(1,1,6) stepped surface and covered by a Au layer. We determined the structure of the multilayer stack and the depth-resolved magnetic profile for 5.9 and 13.5 monolayer (ML) thick films. The experiments were carried out on magnetically…
The proteome can be regarded as a molecular phenotype, as changes in protein expression patterns have a direct effect on organismal physiology and fitness. The analysis of the proteome can therefore be an invaluable tool for our understanding of the mechanisms underlying phenotypic changes in response to environmental…
A class of molecular electron transfer cascades—those based on PtII complexes of 2-(1-pyrazole)-pyridine (pzpy) ligands—are reported. The synthesis of a new electron-acceptor imide-modified pzpy ligands is reported, and their application to transition-metal chemistry demonstrated by the synthesis of the PtII chloride…
The expeditious synthesis of donor-acceptor segregated paracyclophanes has been achieved by a selective SNAr reaction of hexafluorobenzene with o-dipyrrolylbenzenes and subsequent cyclodehydrogenation. An orthogonally arranged D-A segregated structure was confirmed by X-ray crystallography. The combined results of DFT…
Abstract This study correlates the device performance of organic solar cells and the electronic charge transport within polymer/fullerene films, directly to the optical order of the polymer. The optical order was measured by spectroscopic ellipsometry and evaluated by our previously derived model. We were able to dete…
Here we report a viable route to fibrillar micelles and entrapped vesicles in aqueous solutions. Nanofibrillar micelles and entrapped vesicles were prepared from complexes of a biodegradable block copolymer poly(ethylene oxide)-block-poly(lactide) (PEO-b-PLA) and a polyelectrolyte poly(acrylic acid) (PAA) in aqueous m…
Anhydrous procainium acetate is a room temperature ionic liquid ( T g = −25 °C); however, in the presence of water, this salt forms a crystalline dihydrate ( T m = 52 °C) that cannot be dehydrated without decomposition. Unintended crystallization of any active pharmaceutical ingredient can dramatically alter its solub…
The new window class, which is generated by multiple time-convolution of optimized trapezoid windows, is presented. It is shown that the trapezoid windows can achieve different sidelobe and main lobe behaviors by adjusting the lengths of the lower and upper bases of an isosceles trapezoid. This is to say, in order to…
The energetics of methane binding are calculated in a set of five zeolitic imidazolate framework (ZIF) materials using the van der Waals Density Functional 2 (vdW-DF2) [ Lee, K.; et al. Phys. Rev. B 2010, 82, 081101]. These results are compared to those from previous calculations for carbon dioxide in the same ZIFs […
Abstract We describe here the covalent modification of a glassy carbon electrode with toluidine blue (TB) diazonium salt, which is generated in situ from the reaction between the aromatic amino phenyl group of TB and sodium nitrite. TB is attached directly to the electrode surface without any cross‐linking agent or co…
Although the crystal structure in aramid fibers and the relationship between the size and orientation of crystallites and the performance of a material have been explored in detail, the effect of microvoids in an aramid fiber on its performance is still not clear. However, it is known that the mechanical properties de…
We analyze the low-voltage transport response of large molecular wires bridging graphene electrodes, where the molecules are physisorbed onto the graphene sheets by planar anchor groups. In our study, the sheets are pulled away to vary the gap length and the relative atomic positions. The molecular wires are also tran…
In this paper, a two-dimensional (2D) model of the terminating-type power sensor is established under different input powers. The 2D heat transfer equation is applied to describe the temperature distribution, and Fourier series is used to obtain the solution based on the boundary conditions. In order to demonstrate th…
We have studied the effect of a twist defect on the conversion of the fundamental mode (FM) into an optical vortex (OV) in a helical-core fiber (HCF). We have shown that if such a twist defect is situated in the middle of the HCF, which converts the FM into an OV, such a fiber system can continuously change the orbita…
This article addresses the accuracy of a dynamic mean field theory (DMFT) for fluids in porous materials [P. A. Monson, J. Chem. Phys. 128, 084701 (2008)]. The theory is used to study the relaxation processes of fluids in pores driven by step changes made to a bulk reservoir in contact with the pore. We compare the re…
Brushless dc (BLDC) machines with a surface mounted permanent magnet (SMPM) rotor meet the high-torque and high-efficiency requirements for automotive applications. However, their constant-power operation region is limited due to the low phase inductance. As an alternative to the electrical field-weakening methods, th…
In the past two decades, there has been increasing research and industrial activity in the area of gallium nitride (GaN) electronics, stimulated first by the successful demonstration of GaN LEDs. While the promise of wide band gap semiconductors for power electronics was recognized many years before this by one of the…
The need for efficient power converters is currently a major driver of GaN-on-Si research activities. Among several areas, a large research field is the engineering of enhancement mode devices. Several solutions have been provided in the past. Yet, almost all solutions either lack the compatibility with epitaxy on Si…
Recently it has been proposed a model for fibrils of human insulin in which the fibril growth proceeds via stacking LVEALYL (fragment 11-17 from chain B of insulin) into pairs of tightly interdigitated [Formula: see text]-sheets. The experiments have also shown that LVEALYL has high propensity to self-assembly and bin…
Filamentary conduction via dislocations has been considered to be a mechanism driving resistive switching in SrTiO3 single-crystals. This possible mechanism is further investigated by fabricating Pt-SrTiO3-Pt lateral devices on high dislocation density areas as well as dislocation-free areas of single-crystal SrTiO3,…