Materials Literature
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We present an investigation of the $[{\mathrm{Fe}}_{19}(\mathrm{metheidi}{)}_{10}(\mathrm{OH}{)}_{14}(\mathrm{O}{)}_{6}({\mathrm{H}}_{2}\mathrm{O}{)}_{12}]{\mathrm{NO}}_{3}∙24{\mathrm{H}}_{2}\mathrm{O}$ (henceforth ${\mathrm{Fe}}_{19}$) high spin magnetic molecular cluster, based on proton NMR measurements obtained in…
Both radiative and nonradiative relaxation rates for a series of rare-earth ions doped $20\mathrm{Ge}\text{\ensuremath{-}}5\mathrm{Ga}\text{\ensuremath{-}}10\mathrm{Sb}\text{\ensuremath{-}}65\mathrm{S}$ $(\mathrm{GeGaSbS})$ sulfide (chalcogenide) glasses have been determined. Temperature-dependent lifetimes were carri…
Magnetostriction and the electrical resistivities of as-cast and ⟨110⟩ oriented crystals of Tb0.3Dy0.7(Fe1−xSix)1.95 (x=0,0.025,0.1) were investigated. Giant magnetostriction and obvious magnetostrictive jump effect were observed in oriented Si doped TbDyFeSi crystals especially for x=0.025. The electrical resistiviti…
Imaging surfaces and interfaces with structural and chemical specificity has been essential for understanding a variety of phenomena occurring in adsorbed layers during surface chemical reactions. A recent achievement of chemical imaging with spectroscopic analysis is the experimental proof of theoretically predicted…
A sample of Ni0.25Co0.25Zn0.5Fe2O4 ferrite was prepared by a double-staged sintering method in air. Thermoplastic natural rubber (TPNR) was prepared by melt blending of natural rubber (NR), liquid natural rubber (LNR), and high density polyethylene (HDPE) in an internal mixer Brabender Plasticorder PL 2000. Magnetic p…
A method for visualizing ferroelectric domain walls based on higher order nonlinear dielectric detection is proposed. This technique enables the authors to obtain information to visualize the domain wall clearly. Using this method, nanodomain variations with high temperature treatments are observed. The results indica…
A simple fabrication technique for anisotropic particles of ellipsoidal/discoidal shape has been developed, based on stretching/compressing of oil-in-water emulsion templates embedded into an elastic aqueous gel; a range of solid anisotropic microparticles have been fabricated by polymerising of the deformed oil drops…
The enhancement in light extraction efficiency from a periodic micron-scale rugged surface pattern on Si quantum dot light-emitting-diode (Si-QD LED) structures was investigated, both numerically and experimentally. Micron-scale rugged surface patterns were fabricated on the top layer of the Si-QD LED to increase the…
Individual carbon nanotube electron field emitters with good controllability have been fabricated in a two-step process involving (a) producing micron-size carbon fibers which contain single carbon nanotubes at their cores by a chemical vapor deposition method and (b) exposing the nanotubes by fracturing the fiber wit…
Electron beam induced current (EBIC) is often used to evaluate minority carrier properties in semiconductors. Various mathematical models have been proposed; the most advanced is that of Bonard and Ganière [J. Appl. Phys. 79, 6987 (1996)]. However, in order to apply this model to EBIC experiments, the lateral and dept…
The layer structures in bent-shaped liquid crystal dimers mOAM5AMOm (m=6-16) have been investigated by x-ray microbeam diffraction. These liquid crystal molecules have two rodlike mesogens connected with an odd-numbered alkylene spacer and form a bent shape. In these compounds it is found that the structure changes fr…
Spectroscopic ellipsometry measurements on 1–10 bilayers of HgTe nanocrystals and polymer were performed in the spectral range from 0.5to5eV. The experiments show that the band model, respectively, band energy shifts due to quantization, can be applied onto nanocrystals with as few as five unit cells in diameter. Thes…
It is demonstrated that either a strong nonlinear or a nearly Ohmic behavior in current-voltage relationship can be distinctively represented in Sc-doped polycrystalline CaCu3Ti4O12, with variation in the initial composition of samples. Through conductive atomic force microscopy and impedance spectroscopy, such a defi…
Brückenschlag: Eine Brücke zwischen der Polyoxometallatchemie und Kupferhalogenidclustern repräsentiert das (4,12)-verknüpfte dreidimensionale Netzwerk (NH4)[Cu24I10L12][PMoV2MoVI10O40]3, das durch kovalente Verknüpfung von nanoskaligen Keggin-Anionen und [Cu24I10L12]14+-Clustern aufgebaut wurde (siehe Bild; L: mehrzä…
Abstract A multiscale modeling approach was developed to capture concentration variations in the fluid in two dimensions for catalytic flow reactors. The methodology couples continuum descriptions of the fluid phase and kinetic Monte Carlo simulations of the catalyst domain. A number of catalytic domains, placed as pa…
Multilayers of $\mathrm{Pb}({\mathrm{Mg}}_{1∕3}{\mathrm{Nb}}_{2∕3}){\mathrm{O}}_{3}$ (PMN)-${\mathrm{PbTiO}}_{3}$ (PT) were deposited through pulsed laser ablation deposition with different periodicities ($d=10$, 20, 30, 40, 50, 60, and $70\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$) for a constant total thickness of the…
In this study, 573 nm quantum dots (QDs)-rabbit IgG-goat anti-rabbit IgG-638 nm QDs immunocomplexes were prepared, utilizing antigen-antibody interaction. 573 nm-emitting QDs were conjugated to antigen (rabbit IgG) and 638 nm-emitting QDs were conjugated to antibody (goat anti-rabbit IgG) via electrostatic/hydrophilic…
Cast in a new role: Aqueous solutions of OsO4 and NaIO4 oxidize methane to methanol under very mild conditions (see scheme). The generated methanol is preserved over 5 days at 50 °C, although it is more readily oxidized than methane in separate experiments. Remarkably, methanol oxidation by aqueous OsO4/NaIO4 is inhib…
A rapid yet simple methodology to synthesize carbon nanotubes (CNTs) in a room temperature environment has been demonstrated using an inductive heating system. Substrates of either heavily doped silicon or nickel-coated, lightly doped silicon have been used to synthesize CNTs using Fe as the catalyst. Aligned carbon n…
A transverse Peltier effect has been observed in artificially created tilted Pb–Bi2Te3 multilayer structures. Multilayer stacks consisting of alternating layers of Pb and n-type Bi2Te3 have been prepared by a heating procedure and showed large thermoelectric anisotropy up to ΔS≅200μV∕K, depending on thickness ratio p=…