Materials Literature
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In this work argon and nitrogen were implanted into ZnO single crystals in order to compare the influence of these non-magnetic elements in the magnetic and electrical behaviour of zinc oxide. The results indicate that both nitrogen and argon implantations induce magnetic defects in ZnO, although these do not remain s…
The astounding progress in methods and technology that led to the undisputed success and impact of biomolecular crystallography on areas ranging from essential structural biology to therapeutic drug discovery or the study of molecular complexes of ever increasing size and beauty has brought with it new requirements fo…
The growth of Bi on a pseudomorphic Bi monolayer on the fivefold surface of the icosahedral Al-Pd-Mn quasicrystal has been investigated using low energy electron diffraction and scanning tunnelling microscopy. Initially randomly oriented pseudocubic islands are formed with a preference for an even number of layers. Su…
Abstract Long‐chain branching polypropylene (LCB‐PP)/clay nanocomposites were prepared by melt blending in a twin‐screw extruder. The microstructure and melt rheology of these nanocomposites were investigated using x‐ray diffraction, transmission electron microscopy, oscillatory shear rheology, and melt elongation tes…
A well controlled and cost effective method of fabricating highly ordered arrays of vertical zinc oxide (ZnO) nanowires or nanopores is demonstrated where an ultrathin alumina membrane (UTAM) itself is utilized as a substrate for the selective growth of the ordered arrays. A thin film of gold was thermally evaporated…
Zwischen Molekül und Festkörper: Bei den drei Titelverbindungen handelt es sich um ligandenstabilisierte Cluster, die einen deutlichen strukturellen Bezug zu den entsprechenden binären Kupfer(I)-Chalkogeniden zeigen. Der abgebildete Cluster, [Cu136S56(SR)24(dpppt)10], kann als ca. 1.2×1.4×1.9 nm3 großer Ausschnitt ein…
Using first-principles density functional theory, the magnetic pair interactions between various pairs of chemical specie have been calculated and the trends in magnetism with varying compositions and chemical ordering are analyzed for three off-stoichiometric NiMnGa alloys in their austenite phases. The experimentall…
OBJECTIVES: Cleaning verification is a scientific and economic problem for the pharmaceutical industry. A large amount of potential manufacturing time is lost to the process of cleaning verification. This involves the analysis of residues on spoiled manufacturing equipment, with high-performance liquid chromatography…
A TiO2 grating beam splitter on the SiO2 layer is designed using the modal analysis. Normal incident light couples to the −1st/+1st-order transmission diffraction with a 49.6% efficiency for each and with a 50° refraction angle that is larger than the critical angle for the SiO2-air interface. The SiO2 interlayer is s…
An unusual magnetoresistance (MR) behavior in Sr(2)FeMoO(6), recently termed as spin-valve-type MR (SVMR), presents several anomalies that are little understood so far. The formation of a magnetically distorted skin layer around every soft, ferromagnetic grain seems to be the reason behind such an unprecedented tunnel…
In this work, syndiotactic polypropylene/multiwalled carbon nanotubes (MWCNT) nanocomposites, in various concentrations, were produced using melt mixing. The influence of the addition of MWCNT on the morphology, crystalline form, and the thermal and electrical properties of the polymer matrix was studied. To that aim,…
The packing density of binary (A 13 B) and ternary (A 12 BC) hard-sphere systems with the NaZn 13 structure type is investigated in detail using a combination of Monte Carlo simulated annealing and gradient optimizations. This paper shows that if distortions from the perfect icosahedral arrangement of Zn spheres are c…
Gold clusters synthesized by the solution-based growth technique have exhibited ultraviolet (UV) light emission with nearly zero Stokes shift. Atomic arrangement decided optical properties of the Au microclusters have been studied extensively. In addition to the time-of-flight mass spectra, the comparison of experimen…
We performed a long-term study of the autothermal reforming of glycerol. Liquid glycerol and water were introduced into a quartz reactor at room temperature and mixed with air in a nebulizer. The aerosol reacted to form H 2, H 2 O, CO, and CO 2 over a bed of spherical Rh−Ce/CeO 2 /Al 2 O 3 particles, with minor produc…
Die Spaltung eines Polyethylenglycol(PEG)-Nanopartikel(NP)-Konjugats mit FRET resultiert in einer Fluoreszenz bei 520 nm (siehe Bild). Wurden die Nanopartikel auf Krebszelllinien als Ziel gerichtet, bewirkte die reduzierende Umgebung des Endosoms die Spaltung der Disulfidbindung und das Auflösen der PEG-Schicht.
Novel magnetic core-shell iron oxide nanoparticles, covered by polypyrrole which is functionalized by covalent attachment of glycyl-leucine or bovine serum albumin were synthesized using N-hydroxysuccinimide as activating reagent. The morphology of the functionalized magnetic nanoparticles was investigated by DLS and…
A new magnetoelectric effect is predicted originating from the interlayer exchange coupling between two ferromagnetic layers separated by an ultrathin ferroelectric barrier. It is demonstrated that ferroelectric polarization switching driven by an external electric field leads to a sizable change in the interlayer exc…
Deeply supercooled fragile liquid is known to be dynamically heterogeneous, where super Arrhenius behavior of shear viscosity and alpha and beta relaxation processes have been observed. To clarify origins of these behaviors, we have investigated correlations between microscopic molecular diffusion and macroscopic hydr…
Mixed-condensation reaction of 1,8-naphthalenedicarbonitrile and a 4,5-disubstituted phthalonitrile provided a series of phthalocyanine (Pc) analogues with azaphenalene (AP) moieties in place of the isoindole moieties. Monosubstituted species, APPc, and the two structural isomers of disubstituted species, adj-AP(2)Pc…
Drei Schlüsselschritte, darunter eine Carboformylierung, kennzeichnen die vorgestellte Methode, Bodipy-Farbstoffe kovalent zu verknüpfen. In allen Multichromophor-Produkten läuft ein sehr effizienter photoinduzierter Energietransfer zu den terminalen Bodipy-Modulen ab, die bei 652 nm mit 57 % Quanteneffizienz fluoresz…