Materials Literature
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We have measured the structure and chemical composition of ultrathin Pd films on Cu(001) using low-energy electron microscopy. We determine their local stoichiometry and structure, with $8.5\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ lateral spatial resolution, by quantitatively analyzing the scattered electron intensity…
Abstract The crystalline morphologies of isothermally and nonisothermally crystallized poly(phenylene sulfide) (PPS) and its blend with polyamide 66 (PA66) were investigated by polarized optical microscopy with a hot stage. The spherulite superstructure of PPS was greatly affected by crystallizable PA66; a Maltese cro…
„Am anderen Ende der Leitung“ ist das erste kernmodifizierte expandierte Porphyrin, an dessen Pyrrolringe polycyclische aromatische Substituenten anelliert sind, das bis weit ins nahe Infrarot hinein absorbiert und im Bereich des zweiten optischen Telekommunikationsfensters fluoresziert. Die Einbettung des Farbstoffs…
We have investigated new methods to manufacture four-point contacted suspended, individual multiwalled carbon nanotubes by dielectrophoresis. The necessity of four-point contacted carbon nanotubes is underpinned by the need for more exact measurements of carbon nanotube properties and more complex carbon nanotube base…
A study on the synthesis of La 1− x Ag x MnO 3+ δ ( x = 0, 0.2) using a microwave process (MWhyd) has been carried out by comparing the heating time and reaction temperature with the same factor under conventional thermal process (CHhyd). Experiments have been conducted using the hydrothermal method at medium pressure…
A pretty pair: Self-assembly has been used to amplify and translate the structural information of amino acids into spectroscopic and morphological information (see scheme). It combines in situ premodification of various amino acids and their specific association with a cyanine dye. Conversion of the amino acids into t…
The M\"ossbauer spectra of monodispersed iron oxide nanoparticles with diameters of 4, 7, 9, and $11\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ have been measured between 4.2 and $315\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ and fitted within the formalism for stochastic fluctuations of the hyperfine Hamiltonian. In this mod…
Taking the organic molecular material dithiophene-tetrathiafulvalene (DT-TTF) as an example of a high mobility organic molecular material, we use density functional calculations to calculate the dependency of the reorganization energy associated with charge carrier transport on: (i) the geometric and electronic respon…
Abstract Mg–Al–Fe ternary hydrotalcites were synthesized by a coprecipitation method and characterized with powder X‐ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The flame‐retardant effects of Mg/Al–CO 3 layered double hydroxides (LDHs) and Mg/Al/Fe–CO 3 LDHs in an ethylene…
An in situ spectroscopic ellipsometry study has been performed to investigate $\mathrm{La}\mathrm{Ni}{\mathrm{O}}_{3\ensuremath{-}x}$ phase transition associated with oxygenation and/or reduction reversible treatments. Epitaxial thin films of $\mathrm{La}\mathrm{Ni}{\mathrm{O}}_{3}$ were deposited onto $\mathrm{Sr}\ma…
A new series of mixed-framework compounds in the chalcohalide family has been synthesized using the conventional solid-state reactions. These include CdSb 2 Se 3 Br 2 1 and its isoelectronic indium derivatives InSb 2 S 4 X (X = Cl 2 and Br 3 ) and InM 2 Se 4 Br (M = Sb 4 and Bi 5 ). Single crystals were grown from dir…
Abstract Commercial electronic devices require shielding solutions that ensure electromagnetic compatibility (EMC) while accounting for effects of specific enclosure structural features such as seams, vents, and port dimensions. In practice, suitable EMC materials combine with the device operating characteristics to d…
Abstract In this paper, a new image analysis based method for electrospun nanofiber diameter measurement has been presented. The method was tested by a simulated image with known characteristics and a real web. Mean (M) and standard deviation (STD) of fiber diameter obtained using this method for the simulated image w…
Abstract In this study, polylactide (PLA)-multi-walled carbon nanotube (MWCNT) nanocomposites were melt-compounded using a twin-screw extruder. Solid and microcellular tensile bar specimens were produced via conventional and microcellular injection molding, respectively. Various characterization techniques were applie…
Use of sol–gel condensation reactions with the proper precursors, in conjunction with electrospinning methods, leads to the facile formation of one-dimensional nanofibers of silicon or germanium dioxide doped with erbium. These nanowires are characterized by a combination of scanning and transmission electron microsco…
Abstract The stability of chitosan with a degree of deacetylation (DD) of 88 and 81% was investigated in solution during storage for 60 days at various temperatures (60, 28, and 5°C) and acid concentrations (0.8 M , 0.2 M , and 0.1 M ). The first‐order rate constant of chain hydrolysis of 88%DD chitosan at 60°C was ab…
ZnO thin films with c -axis orientation have been prepared by a sol–gel method on glass substrates. An ethanol solution mixed with zinc acetate dihydrate and monoethanolamine was used as the precursor for spin-coating. Preferentially oriented ZnO thin films were prepared by preheating the as-deposited films at 300 °C…
An electrogenerated precursor has been developed for green synthesis of highly luminescent aqueous CdTe quantum dots (QDs) with unique quantum yield and strong electrogenerated luminescence, which can access cellular targets via specific binding and have potential application as biolabels in highly sensitive biosensin…
The method of pseudopotentials within the generalized gradient approximation has been employed to calculate the phase stability, electronic structure and elastic constants of β, α'' and ω metastable phases in the Ti–25 at.% Nb alloy. The bulk, shear and Young's moduli of those metastable phases are estimated from the…
We report a previously unknown body-centered-tetragonal structure for ZnO. This structure results from a phase transformation from wurtzite in [0001]-oriented nanorods during uniaxial tensile loading and is the most stable phase for ZnO when stress is above $7\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$. The stress-induce…