Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The present work investigates the evolution of micro-Raman spectra of (1−x)Pb(Fe2∕3W1∕3)O3−xPbTiO3 (PFWT) (x=0.50) thin films in the temperature range from 80to600K. Raman and dielectric data indicate that the crystal structure changes from tetragonal to cubic, i.e., a ferroelectric phase transition at 575K. The diele…
CdMnS thin films grown on indium tin oxide substrate exhibit a ferroelectric property. The remnant polarization of CdMnS films was around 0.025μC∕cm2 for 10% of manganese with a sustained polarization endurance for several cycles. Persisting and highly reproducible bistable switching of about five orders in magnitude…
A narrow size distribution of ZnO nanorod array has been synthesized on silicon substrate by pulsed laser deposition (PLD) in argon ambient. ZnO∕Er2O3 core-shell nanostructures were then formed through PLD of a thin Er2O3 layer onto the fabricated ZnO nanorod surface. Transmission electron microscopy analysis shows th…
Photoluminescence (PL) behavior of SrBi2Nb2O9 (SBN) powders was explained by means of β-Bi2O3 phase on the SBN lattice. Oxygen vacancies and recombination of electrons holes in the valence band lead to the formation of [NbO5∙VOx], [NbO5∙VO•] and [NbO5∙VO••] complex clusters which are the main reason for the PL at room…
FeSe film was prepared on GaAs (001) substrate by low pressure metal-organic chemical vapor deposition. The x-ray diffraction measurement indicated that the sample was preferentially oriented with tetragonal structure. The structure relationship between FeSe epilayer and GaAs (001) substrate has been studied. The crit…
Unerwartet komplexe Strukturen: Die strukturelle Charakterisierung von gut kristallisiertem Mg(BH4)2-Pulver anhand von Synchrotron-Röntgenbeugungs- und Neutronenbeugungsdaten enthüllte, dass Mg(BH4)2 ein neuartiges und bemerkenswert komplexes dreidimensionales Gerüst bildet, in dem jedes Mg2+-Ion (blau) tetraedrisch v…
A novel protocol for precisely coating individual multiwall carbon nanotubes (MWCNTs) with an ultrathin layer of polypyrrole was developed. The nanocoated MWCNTs were successfully prepared by in situ chemical deposition of polypyrrole in an aqueous suspension of MWCNTs. The coating layer was very uniform and the thick…
The authors have demonstrated defect mode lasing emission from a spin-coated double-layered dye-doped polymeric cholesteric liquid crystal (PCLC) films with a thin rubbed isotropic layer in between. The rubbed layer acts not only as an alignment layer for the second PCLC layer but also as an isotropic defect layer bre…
The authors have fabricated artificial twisted nanofibers that resemble naturally twisted fiber structures, such as collagen fibril and double-strand DNA, using a modified conventional electrospinning system to directly develop the twisted nanofibers. The system modification allowed for the fabrication of twisted nano…
Highly (00l)-oriented Li0.3Ni0.7O2 thin films have been fabricated on (001) MgO substrates by pulsed laser deposition. The Pb0.4Sr0.6TiO3 (PST40) thin film deposited subsequently also shows a significant (00l)-oriented texture. Both the PST40 and Li0.3Ni0.7O2 have good epitaxial behavior. The epitaxial growth of the P…
The surface of several polymers was graphitized by low-energy ion irradiation. Their conducting properties were studied as a function of the energy of the ions and the irradiation temperature. It was found that at rather modest ion energies (∼1000eV) and irradiation temperatures (<400°C), polymer surfaces trans…
Atomic-level simulations are providing powerful insights into the properties of ferroelectric materials. In particular, we illustrate the effect of the strong coupling among the dipole moment, strain, and microstructure (both physical and chemical) in thin films, nanostructures, superlattices, and solid solutions of f…
Dense 8 mol% CuO‐doped 3Y‐TZP ceramics were prepared by pressureless sintering for 8 h at 1500° and 1550°C, respectively. Transmission electron spectroscopy revealed that the ceramic sintered at 1500°C exhibits grain boundaries free of any amorphous phase, while crystalline copper‐oxide grains were found in the zircon…
Within the tritium plant of ITER a total inventory of about 2–3 kg will be necessary to operate the machine in the DT phase. During plasma operation, tritium will be distributed in the different sub-systems of the fuel cycle. A tool for tritium inventory evaluation within each sub-system of the fuel cycle is important…
The authors performed scanning photoluminescence (PL) spectroscopy on CdSe∕ZnS core/shell quantum dots (QDs) bioconjugated to Interleukin 10 (IL10) antibody. The influence of IL10 on the QD photoluminescence spectra was explored on samples dried on solid substrates at various temperatures. A “blue” up to 15nm spectral…
Crystalline ZnO nanoparticles with nearly uniform size were studied using photoluminescence and Raman spectroscopy. The main spectral feature of ultraviolet photoluminescence is attributed to the recombination of free exciton (FX) and the first surface phonon replica of FX emission. The energy of FX emission shows a c…
ZnO nanoparticles were grown on single-walled carbon nanotubes (SWNTs) by atomic layer deposition using diethylzinc (DEZ) and water. The athors discuss that, because of chemical inertness of nanotubes to DEZ and water molecules, such nanoparticles are not likely to grow on the wall of clean and perfect nanotubes. Rath…
Magnetocaloric effect in CdCr2S4 was investigated by magnetization and heat capacity measurements. CdCr2S4 is of a cubic spinel structure with soft ferromagnetism and performs reversible magnetic entropy in the whole experimental temperature range from 56to128K. A large magnetic entropy change ∼7.04J∕kgK and adiabatic…
Metal dusting The metal dusting corrosion of steels with varying concentrations of chromium Microprocesses of metal dusting on iron-nickel alloys and their dependence on the alloy composition Metal dusting behaviour of welded ni-base alloys with different surface finish Effect of H2S on metal dusting of iron Occurrenc…
Using surface enhanced ROA (SEROA), novel results are achieved by combining Raman optical activity (ROA) and resonance surface enhanced Raman scattering (SERRS), applied on myoglobin. The novelty of this work is in reporting for the first time on chiral results of a study performed on a protein at single molecule leve…