Materials Literature
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Koordinierte Kontrolle: Wegen ihrer äußerst schwierigen Synthese sind Polytellurophene praktisch unerforscht. Ein neues dihalogeniertes Bitellurophen-Monomer wurde synthetisiert, und seine Polymerisation unter Palladium-katalysierten Bedingungen wurde optimiert. Die entstehenden Polytellurophene sind stabile Verbindun…
Optically stimulated luminescence (OSL) was studied in undoped and rare‐earth doped fluoride–phosphate glass. Following exposure to 90 Sr/ 90 Y β‐radiation, the samples demonstrated strong OSL in the 350–600 nm wavelength range. Here, we explore the effects of fabrication conditions and rare‐earth dopants on the OSL.…
Interfacial fibrosis is known to dramatically decrease the lifespan, stability, and function of biomedical implants and bone-anchored prosthetics. Bioactive coatings aimed at mitigating fibrous adhesions are one of the approaches to alleviate the problem. In this paper, we are developing a bioactive coating based upon…
The results of the experimental studies of effect of high pressures (12–45 GPa) and low temperatures (10–300 K) on the electrical properties of the semiconductor CuInAsSe3 are presented. The temperature and pressure ranges of noticeable changes in a behaviour of the electrical properties are established. At atmospheri…
The UvrA protein initiates the DNA damage recognition process by the bacterial nucleotide excision repair (NER) system. Recently, crystallographic structures of holo-UvrA(2) dimers from two different microorganisms have been released (Protein Data Bank entries 2r6f , 2vf7 , and 2vf8 ). However, the details of the DNA…
The reaction of 2-acetylpyridine with silver(I) tetra-fluorido-borate leads to the discrete title complex, [Ag(C(7)H(7)NO)(2)]BF(4), in the cation of which the Ag atom is coordinated by two 2-acetylpyridine ligands, each of which is N,O-bidentate, albeit with stronger bonding to the N atoms [Ag-N = 2.2018 (15) and 2.2…
Abstract New conjugated oligomers, oligo(9,9‐didodecylfluorene‐bis‐sulphurdiimide), consisting of 9,9‐didodecylfluorene separated by NSN moieties, are reported. These oligomers are stable purple solids under ambient conditions with absorption covering a broad spectral window in the UV‐vis range and a main broad pe…
We report new results on the magnetic properties of the FexCo1 - xTa2O6 series of compounds. Essentially using neutron-diffraction and magnetic measurements we study, in more detail, the low-x limit of the temperature versus x phase diagram, where a new bicritical point is observed. The complete phase diagram shows th…
We fabricated and characterized hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs) with a channel length of 10 on both spherical and flat surfaces using maskless laser-write lithography (LWL). In addition to the electrical performance, the threshold voltage shift of the a-Si:H TFT under bias-temperat…
Abstract The formation of near surface SiGe layers by means of combined high dose Ge ion implantation and flash lamp annealing will be addressed. Furthermore, we show that the formation of an undesirable facetted liquid/solid interface, which is well known for pulse melting in the millisecond time regime, is less pron…
Pump-induced line broadening has been used to investigate the thermal loading of laser-diode-pumped${\rm Nd}^{3+}{\colon}{\rm Y}_{3}{\rm Al}_{5}{\rm O}_{12}$laser ceramics with different${\rm Nd}^{3+}$-ion concentrations. This new method here proposed allow us to obtain, in an easy and direct way, the concentration de…
Second-order nonlinear optical effects, a linear electro-optic (EO) effect and optical rectification (OR), were observed in surface immobilized gold nanospheres (SIGNs) above a gold surface with a gap of about 1.4 nm. The EO and OR measurements were performed in an attenuated total reflection geometry under a surface…
The most efficient construction materials for boiler water walls and superheaters in steam power plants are ferritic and martensitic steels. In practical operation, tubes are exposed simultaneously to combustion gas and air/steam on their opposite surfaces. The corrosion behavior of ferritic-martensitic steels under s…
Single crystals of α-Ba(2)P(2)O(7), dibarium diphosphate, were obtained under hydro-thermal conditions. The structure belongs to the diphosphate A(2)P(2)O(7) series with A being an alkaline earth cation. α-Ba(2)P(2)O(7) crystallizes isotypically with α-Sr(2)P(2)O(7). All atomic sites have site symmetry m with the exce…
In this work, silicon nitride thin films have been deposited by plasma enhanced chemical vapour deposition on both silicon samples and AlGaN/GaN high electron mobility transistors (HEMT) grown on sapphire substrates. Commercial parallel-plate RF plasma equipment has been used. During depositions, the dissociation rate…
Author: Zettl, U. et al.; Genre: Journal Article; Issued: 2010-11-23; Keywords: MPI für Metallforschung; Abt. Dietrich; Soft Matter at Interfaces; ; Title: A fluorescence correlation spectroscopy study of macromolecular tracer diffusion in polymer solutions
The effect of impurity scattering on the thermal conductivity $\ensuremath{\kappa}$ of the heavy-fermion superconductor ${\text{CeIrIn}}_{5}$ was studied for a current parallel $(J\ensuremath{\parallel}c)$ and perpendicular $(J\ensuremath{\parallel}a)$ to the tetragonal $c$ axis. For $J\ensuremath{\parallel}a$, adding…
The structure of a binary mixture of nonadditive hard spheres confined in a slit pore is studied by the integral equations method in which the confining medium acts as a giant particle at infinite dilution. The adsorption/desorption curves are studied as a function of the composition and density, when the homogeneous…
A cerium-doped gadolinium-yttrium garnet yellow emitting phosphor was used to optimize the phosphor layer for down-conversion of blue light from InGaN inorganic light-emitting diode (iLED) to white. Optical, morphological and elemental characterizations of phosphor were carried out. Various amounts of the phosphor wer…
Muon spin rotation/relaxation spectroscopy has been employed to study electron localization into a bound magnetic polaron around the positive muon in the 3d magnetic spinel semiconductor CdCr2Se4 at temperatures up to 300 K (far above the ferromagnetic transition at Tc = 130 K) in magnetic fields up to 7 T. Electron l…