Materials Literature
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Ultraviolet (UV) embossed alignment layer for the flexible liquid crystal display (LCD) was fabricated to prevent problems encountered with the thermal treatment of the rubbing process on the plastic substrate. The mechanical stability against bending deformation was achieved by a phase-separated polymer wall. In a be…
Abstract A new method has been developed to detect the formation of carbon–carbon bonds by Diels–Alder reactions based on the fluorescence quenching of conjugated polymers. Conjugated copolymers containing various amounts of functional furan pendant groups (PFP–F) have been synthesized and characterized. A maleimide g…
This work investigates the electronic and ferromagnetic properties of Zn1−xCoxO nanorods using x-ray absorption, x-ray magnetic circular dichroism, and scanning photoelectron microscopy methods. The magnetic moment of Co ions in Zn1−xCoxO nanorods is found greatly reduced relative to that of the Co metal. The intensit…
Bestens konjugiert: Die neuartigen Azoporphyrine (1,2-Bis(porphyrinyl)diazene) wurden durch kupferkatalysierte Kupplung primärer Amine hergestellt. Die Struktur von Azo(triphenylporphyrin) wurde röntgenographisch bestimmt (siehe Bild). Der Azo-Linker ist ideal geeignet, um die π-Konjugation der Porphyrinringe zu erwei…
Intergranular conduction in half metallic ${\mathrm{CrO}}_{2}$ is known to occur through a combination of spin dependent tunneling [driven by Coulomb blockade (CB) effects] together with certain spin independent (SI) hopping processes. We present evidence that in polycrystalline ${\mathrm{CrO}}_{2}$ with enhanced grai…
Glass fiber reinforced polymer (GRP) composites are attractive candidates for future combat vehicle armor systems. Due to their complex architecture, shock waves in GRP undergo geometric and material dispersion as well as attenuation with distance of shock wave propagation. In the present study a series of plate impac…
Chemische Chamäleons: Hochstabile supramolekulare Aggregate aus dendritischen Multischalenarchitekturen zeigen universelle Transportfähigkeiten für polare und unpolare Gastmoleküle und können sich an verschiedene Lösungsmittelumgebungen anpassen, von Toluol bis hin zu Wasser.
The authors fabricated diamond solution-gate field-effect transistors (SGFETs) with miniaturization of the channel length to 5μm by photolithography. The channel surface was directly functionalized with amine by ultraviolet irradiation in an ammonia gas for 4h and aminated diamond SGFETs were sensitive to pH by 40mV∕p…
A computer-aided method for the design of waveguide structures loaded with the arrays of metamaterial cells is described. Broadside coupled split ring resonators and Ω scatterers are chosen as the resonant metamaterial cells. By optimisation of the resonator geometry, the bandwidth of the transmission range below the…
Magnetoinductive waves propagating along a line consisting of two kinds of metamaterial elements are studied. Both elements are made up by the same metallic loop but are loaded by different capacitors resulting in different resonant frequencies. The dispersion characteristics are derived from phase and amplitude measu…
This study demonstrated the feasibility of introducing an avidin-biotin system to three-dimensional and highly porous scaffolds for the purpose of designing scaffolds that have binding affinity with bioactive molecules for various biomimetic modifications. Porous hybrid scaffolds composed of collagen and hyaluronic ac…
The dynamics of magnetic vortices in thin Permalloy disks having artificial defects in the form of small holes at different locations within the disk has been investigated by means of frequency-domain spatially resolved ferromagnetic resonance. It is found that the vortex can be effectively captured by such a defect.…
Fibroblasts can construct a hydrated collagen lattice to a tissue-like structure that is greatly influenced by initial culture conditions. The purpose of this study was to investigate the effects of cell concentration and collagen concentration on the contraction kinetics and mechanical properties of resultant endoten…
The smectic layer spacing of two homologous series of ferroelectric liquid crystal compounds was characterized by small-angle x-ray diffraction and different degrees of smectic layer shrinkage on cooling from the SmA* into the SmC* phase were observed. The smectic A*-smectic C* phase transition was further studied by…
We report on the experimental characterization of orbital ordering and the associated lattice distortions in highly doped ${\mathrm{Bi}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}$. Resonant x-ray diffraction was used at the $\mathrm{Mn}\phantom{\rule{0.2em}{0ex}}L$-edge for the direct observation…
In recent years, left-handed materials (LHMS) have been a hot and debated research topic. Electromagnetic simulation is usually performed for prediction as well as for design. The stability of the surface integral equation method through an insightful and rigorous procedure is analysed. The conclusion is that the PMCH…
A master-equation approach is used to perform dynamic modeling of phase-transformation processes that define the operating regimes and performance attributes of electronic (and optical) processors and multistate memory devices based on phase-change materials. The predictions of the so-called energy accumulation and di…
The effect of heating rate on the thermally stimulated luminescence (TSL) emission due to the temperature lag (TLA) between the TSL material and the heating element has been investigated using Li 2 B 4 O 7 :Cu,Ag,P dosimetric materials. The TLA becomes significant when the material is heated at high heating rates. TSL…
Exchange fields accompanying vertical magnetization shifts were observed in the epitaxial ZnCo0.07O (dilute magnetic semiconductor)/NiO system after field cooling. Transitions of exchange fields and magnetization shifts were observed at 50K, above which the magnetization shift disappeared and the exchange field was si…
The ability of planar left-handed metamaterials (LHMs) based on split-ring resonators (SRRs) to radiate backwards in a certain frequency range, as predicted by theory, is demonstrated. A comparison between an LHM and a negative permeability metamaterial in terms of the experimental backward and forward radiation cones…