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。
Commonalities among the order parameters of the ubiquitous antiferromagnetism present in the parent compounds of the iron arsenide high-temperature superconductors are explored. Additionally, comparison is made between the well established two-dimensional Heisenberg-Ising magnet, ${\text{K}}_{2}{\text{NiF}}_{4}$, and…
A new method is presented to measure capillarity-induced negative pressure. Negative pressures of several bars have been measured for five different liquids (ethanol, acetone, cyclohexane, aniline, and water) over a range of surface tension. Capillary negative pressure was measured in 79 +/- 3 nm silica nanochannels o…
Overexpression of HER-2 accounts for approximately 25% of all breast cancer cases, while 87.7% of HER-2 positive breast cancers are associated with upregulated VEGF. The objective of this study is to explore the combination therapy of blocking HER-2 and VEGF expressions simultaneously using siRNA. This is the first re…
Absorption cross sections ((sigma)abs) of single branched CdSe nanowires (NWs) have been measured by photothermal heterodyne imaging (PHI). Specifically, PHI signals from isolated gold nanoparticles (NPs) with known cross sections were compared to those of individual CdSe NWs excited at 532 nm. This allowed us to dete…
High quality indium arsenide (InAs) and InAs/ZnS, InAs/ZnSe core/shell nanocrystals were synthesized using arsine (AsH 3 ) generated via zinc arsenide (Zn 3 As 2 ) as arsenic precursor. Injection of additional solvent was adopted to control the nucleation. The growth process and different reaction parameters were stud…
In this work, colloidal zinc sulfide nanocrystals, prepared with selected concentrations of manganese(II) ions in the range of 0−2% and stabilized with a polymeric capping agent, were used in the photocatalytic degradation of 2-chlorophenol in aqueous solutions. Particle sizes for the synthesized nanocrystals were det…
Here, we report the experimental realization of a flat near-field lens formed by an array of densely packed crossed metallic wires. It is shown that due to the unusually strong electric response of the inclusions, the metamaterial slab may enhance the deep subwavelength spatial spectrum of a given source. It is experi…
The boundary-value problem of the propagation of Dyakonov-Tamm waves guided by the planar interface between two structurally chiral materials that are identical except for structural handedness was formulated and numerically solved. Detailed analysis showed that either two or three different Dyakonov-Tamm waves can pr…
A new chemical model of supersaturation ( S ) was developed and applied to test for the precipitation of hydromagnesite [Mg 5 (CO 3 ) 4 (OH) 2 ·4H 2 O] in the MgCl 2 −Na 2 CO 3 system in supersaturated solutions over the temperature range of 50−90 °C. Based on the new model with the help of the OLI platform, the conto…
Abstract Terminal piperidinyl‐ and nitro‐functionalized biphenyls, bridged between the 2 and 2′ positions by a variable number of methylene groups, are synthesized and fully characterized. These push‐pull systems with defined and restricted torsion angles between their phenyl rings are ideal model compounds to investi…
The synthesis of the first rhodium(I) cyclooctadiene complexes containing tetrathiafulvalene (TTF) groups substituted on a beta-diketonato ligand in either the methine position (3 position), [Rh(cod)(H(3)CCOC{S-TTF-(MeS)(3)}COCH(3))] (3), or terminal position (1 position), [Rh(cod){(Me(3)-TTF)COCHCOCH(3)}] (4), is rep…
A twinning rotation structure is revealed by reciprocal space mappings obtained from synchrotron X-ray diffraction for the epitaxial BiFeO3 thin film that was grown on (001) SrTiO3 substrate. The lattice strain is not fully relaxed at a film thickness of 720 nm. The structure is indexed as a monoclinic with lattice pa…
The variational cluster approximation (VCA) is applied to the calculation of thermodynamical quantities and single-particle spectra of ${\text{LaCoO}}_{3}$. Trial self-energies and the numerical value of the Luttinger-Ward functional are obtained by exact diagonalization of a ${\text{CoO}}_{6}$ cluster. The VCA correc…
Bright bubbles! Ultrabright sonoluminescence is observed from concentrated phosphoric acid (see picture). Two independent molecular emission species (excited OH. and PO.) can be observed from multibubble sonoluminescence; both of them can be used as spectroscopic thermometers to probe the extreme conditions generated…
A self-forming diffusion barrier (SFB) layer was formed at Cu–Mn/SiO2 interface. Spatial variation of the chemical composition and valence state of the elements in the SFB was investigated in a subnanometer resolution using electron energy loss spectroscopy and transmission electron microscopy. The SFB was found to ha…
The ZnO-LiYbO(2) hybrid phosphors were sintered by the solid-state reaction method, in which the intense near-infrared emission around 1000 nm due to Yb(3+ 2)F(5/2)-->(2)F(7/2) transition was obtained due to the efficient energy transfer from ZnO to Yb(3+) ions. The growth of the LiYbO(2) crystal and the formation of…
Abstract Organically modified and unmodified montmorillonite clays (Cloisite NA, Cloisite 30B and Cloisite 15A), sepiolite (Pangel B20) and nanosilica (Aerosil 300) were incorporated into hydrogenated nitrile rubber (HNBR) matrix by solution process in order to study the effect of these nanofillers on thermal, mechani…
The interest in the application of cholesteric liquid crystals for tunable lasers has risen in the past few years. Here, we want to obtain a mechanically tunable laser device using cholesteric liquid crystal (CLC) elastomers as resonant cavity mirrors in a three-layer configuration, which includes in between an isotro…
Abstract The microstructural evolution, microhardness, tensile properties and impact toughness of Ti‐5Al‐2Sn‐2Zr‐4Mo‐4Cr (Ti17) alloy joints welded by linear friction welding (LFW) are investigated. A narrow, sound weld is formed, consisting of a superfine α + β structure in the weld center. The structure gradually ch…
We measured the Seebeck coefficient of heavily P-doped silicon-on-insulator layers with P concentrations above 1×1019 cm−3. The coefficient decreased with increasing P concentration, and with a peak of the Seebeck coefficient around 5×1019 cm−3. We calculated the density-of-states (DOS) of bulk Si based on theoretical…