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 assembly of single-walled carbon nanotubes (SWCNTs) using the AC dielectrophoresis technique is studied theoretically. It is found that the comb electrode bears better position control of SWCNTs compared to the parallel electrode. In the assembly, when some SWCNTs bridge the electrode first, they can greatly alter…
Abstract The surface of waste ground rubber tire (WGRT) powder has been modified with by allylamine via an ultraviolet (UV) treatment. The degree of grafting of the modified‐WRGT are confirmed by the Fourier Transform Infrared spectroscopy (FTIR), scanning electron microscopy, energy dispersive X‐ray analysis, thermog…
phosphors were prepared by a Pechini sol-gel process. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), diffuse reflectance, photoluminescence, cathodoluminescence spectra, as well as lifetimes were utilized to characterize the synthesized phosphors. XRD results reveal that the sample begi…
Nearly all ferromagnetic transitions have been considered to be continuous or second order, and the most typical examples are the ferromagnetic transitions in Ni, Fe, Co, and ${\text{CoFe}}_{2}{\text{O}}_{4}$. However, by precise measurement with electrical resistivity or impedance and differential scanning calorimetr…
Laterally-coupled distributed feedback (LC-DFB) lasers use a lithographic fabrication step to define the distributed feedback grating, avoiding subsequent regrowth. Using higher order gratings can enhance the lithographic tolerance for lower resolution patterning, yielding lasers more amenable to fabrication. We show…
A series of cellulose/soy protein isolate (SPI) sponges was prepared using a freeze-drying process. The effect of the SPI content on the structure of the sponges was characterized by Fourier transform infrared spectrometry (FT-IR), X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). It showed that…
As part of an effort to develop robust metallic interconnects for intermediate temperature solid oxide fuel cells, a Ni–Mo–Cr alloy is designed, prepared, and investigated in terms of its microstructure, mechanical property, thermal expansion behavior, oxidation resistance, and electrical property. The developed Ni–Mo…
The conformation and clusterization of comblike polymers of polystyrene densely grafted with oligo(ethylene glycol) (OEG) side chains in 1.0 wt % solutions of D 2 O, toluene- d 8, and methanol- d 4 was investigated as a function of the degree of polymerization (DP) of the backbone by small angle neutron scattering (SA…
An integrated investigation of rod-on-rod (symmetric Taylor) impact of annealed copper was conducted using the single-stage gas-gun facility at the Cavendish Laboratory as a validation study of the Armstrong–Zerilli constitutive model, as modified by Goldthorpe. Two main techniques were used for obtaining data from th…
Studying on the Point-Defect-Conductive Property of the Semiconducting Anodic Oxide Films on Titanium, Kong, De-Sheng, Lu, Wen-Hua, Feng, Yuan-Yuan, Yu, Zhang-Yu, Wu, Ji-Xia, Fan, Wen-Juan, Liu, Hai-Yan
Four new Gd(III) complexes based on the 1,2-hydroxypyridinone chelator have been synthesized and evaluated as potential magentic resonance imaging contrast agents. Previously reported work examining Gd-TREN-1,2-HOPO (3; HOPO = hydroxypyridinone) suggests that the 1,2-HOPO unit binds strongly and selectively to Gd(III)…
The electrochemical pitting behavior of UNS C11000 copper was investigated in a synthetic potable water found to cause pitting. Tests were also conducted in several other , , and containing waters with systematic variations in concentrations of these species. Studies of the effect of water chemistry on passivity, unif…
Although about 200,000 metric tons of gamma-MnO(2) are used annually worldwide for industrial applications, the gamma-MnO(2) structure is still known to possess a highly ambiguous crystal lattice. To better understand the gamma-MnO(2) atomic structure, hexagon-based nanoarchitectures were successfully synthesized and…
Lanthanide ions are visible to near-infrared ultranarrowband emitters with long luminescence lifetimes and thus have potential applications in lasing, up-conversion, and bioimaging. However, lanthanide ions have specific and narrow absorption bands characterized by small cross sections, and their luminescence is vibra…
The electronic states of the Fe2As2 plane in iron-based superconductors are investigated on the basis of the two-dimensional 16-band d-p model which includes the Coulomb interaction on a Fe site: the intra- and inter-orbital direct terms U and U', the Hund's coupling J and the pair-transfer J'. Using the random phase…
Electrical conductivity relaxations were measured at a fixed temperature on proton-conducting upon sudden changes of oxygen activity in fixed water-vapor activity atmospheres and vice versa, in the ranges of and , respectively. It has been confirmed that the conductivity relaxes generally with two different relaxation…
Abstract A solvent driven molecular shuttle that contains a TCBD chromophore and in which the macrocycle can be positioned close to or far from the TCBD unit with a change of solvent is prepared. Several distinct nanostructures are obtained by control of the shuttling movement of the macrocycle: i) in a mixed solvent…
International audience
We examine the formation of local moments in Heusler alloys of the composition ${\text{Co}}_{2}\text{Mn}Z$ (where $Z=\text{Si}$ or Al) using the combined techniques of x-ray magnetic circular and linear dichroism. The existence of local moments in half-metallic Heusler alloys is reliant upon the band gap in the minori…
The electrical properties of doped and were studied as a function of temperature, and oxygen and water vapor partial pressure using electrochemical impedance spectroscopy. Rare-earth elements, such as Yb, Eu, and Sm, were used as cation dopants because of their multivalent oxidation state, low third ionization potenti…