Materials Literature
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Two new urethane-based acrylates (UAA and PEG-UAA) were synthesized as polymer blocks. The chemical composition of the two monomers was confirmed by IR and NMR. After cross-linking these blockers by radical polymerization, "hexamethylene PU" [poly(hexamethylene-urethane)] and "PEG-hexamethylene PU" [PEG-poly(hexa-meth…
Abstract In this study, the orientation, mechanical as well as the optical properties of multilayer films of nanoclay filled poly (lactic acid) (PLA) as the core layer and polyethylene (PE) as the skin layer obtained from the film blowing process were investigated. The effect of nanoclay content in the range of 1–7.5…
Light-driven chirality: Sequential light-driven isomerization of prochiral, bis(azobenzene)-containing amino acids results in the formation of chiral entities that have been characterized by different techniques. Metal nanoparticles conjugated with these amino acids retain the photoswitching properties and show confor…
We investigate the effect of vacancy defect reconstruction on electron transport properties in a (4, 0) zigzag and (5, 5) armchair silicon-carbide nanotubes ( SiCNTs ) by applying self consistent non-equilibrium Green's function formalism in combination with the density-functional theory to a two probe molecular junct…
The polarization properties of surface enhanced resonance Raman scattering (SE(R)RS) of rhodamine 6G molecules, adsorbed to a hexagonally ordered gold nanostructure, are studied with the purpose to discriminate between adsorption sites with different plasmonic properties. The nanostructure is based on a self-organizin…
We present transmission increased fused silica lenses produced by using self-organized antireflective structures for which we developed an efficient manufacturing process. The spectral transmission measured over the whole lens aperture shows a significant transmission enhancement of up to 3.5% in the UV range. Local m…
Based on a PBE-D2 calculation that empirically includes van der Waals interactions to the standard GGA approximation of Perdew, Berke, and Ernzerhof, we have investigated the adsorption of ferrocene or ruthenocene on pristine and X-doped graphene (GrS) or graphene nanoribbons (GNRs), where X (=B or N) is a p-type or n…
Neutron diffraction, magnetization and dielectric constant have been measured for single-crystal samples of PbCuSO 4 (OH) 2 with quasi one-dimensional spin-1/2 chains formed of edge-sharing CuO 4 square planes called CuO 2 ribbon chains. An antiferromagnetic transition with an incommensurate helical magnetic ordering…
Synthesis and application of new cationic Mn(III)–salphen complexes for catalytic epoxidation of olefins to epoxides in a homogeneous reaction media have been reported. The experimental data showed that the cationic salphen is more active than its neutral form. The acceleration of the reaction rate is attributed to th…
In situ neutron reflectivity (NR) is used to observe the structure and evolution of a Trivalent Chromium Process (TCP) passive film on Al in a NaCl-D(2)O solution. Using a split liquid reflectivity cell we mimicked the corrosion process on the anodic sites in alloy AA 2024-T3 in a pitting scenario. The split cell sepa…
Cubosomes are the biocompatible novel approach for the drug delivery system. The controlled release application of these nanoparticles is of a great significance in cosmeceutical and pharmaceutical fields. Low cost of the raw materials, versalality and the potential for controlled release through functionalization mak…
Epitaxial films along the Fe${}_{3\ensuremath{-}x}$Ti${}_{x}$O${}_{4}$ (titanomagnetite) compositional series from pure end-members magnetite (Fe${}_{3}$O${}_{4}$) to ulv\"ospinel (Fe${}_{2}$TiO${}_{4}$) were successfully grown by pulsed laser deposition on MgO(001) substrates. Characterization, including high-resolut…
On the basis of hybrid density functional theory calculations, we predict that the most energetically favorable single-walled SrTiO 3 nanotubes with negative strain energy can be folded from SrTiO 3 (110) nanosheets of rectangular morphology. Further formation of multiwalled tubular nanostructure with interwall distan…
Abstract Highly anisotropic thin molecular films have been successfully prepared by depositing a bisazomethine dye under vacuum through evaporation on friction-transferred (FT) poly(tetrafluoroethylene) (PTFE) layers. The layers induce the high orientational degrees showing high dichroic ratios over 20 in their polari…
The buckling of an axially loaded elastic composite beam with a nonlocal core or a nonlocal connection system is studied in this paper. The composite beam or the sandwich beam is composed of two Euler–Bernoulli beams with a nonlocal elastic interaction. This nonlocal interaction is physically based on the Reissner's m…
The present paper introduces the principles of the Impedance Spectroscopy technique, as an important method in the characterization of the discrete materials working in real conditions in circuits. The method was firstly verified by using an RC series-parallel circuit and then was exemplified in studying two types of…
Various reports state that Line Edge/Width Roughness (LER/LWR) has a significant impact on the integrated circuits fabricated by means of lithography, hence there is a need to determine the LER in-line so that it never exceeds certain specified limits. In our work we deal with the challenge of measuring LER on 50 nm r…
Deutet sich hier eine neue Selenmodifikation an…︁? Bei der Reaktion von rotem amorphem Selen mit Silbersalzen zweier großer, schwach koordinierender Anionen wurde die thermodynamisch begünstigte Bildung von [Ag2Se12]2+ beobachtet. Die Struktur des Dikations ist ein neuartiger D3d-symmetrischer 14-eckiger Käfig, aufgeb…
We studied the structural, magnetic, and electronic properties of the geometrically frustrated layered AuCrS${}_{2}$ system by means of x-ray and neutron powder diffraction, specific heat, dc magnetization, and dc electrical resistivity measurements. The room-temperature structural refinement is consistent with a hexa…
We report on original nonlinear spectral hole-burning experiments in ensembles of single-wall carbon nanotubes. We have measured the temperature dependence of the excitonic homogeneous linewidth from 5 K up to room temperature. We show that the phonon-induced broadening in the weak coupling regime predominantly consis…