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。
Molybdenum sulphide (MoS x ) particles were prepared from Na 2 MoO 4 and CH 3 CSNH 2 by the quick homogenous precipitation method within 5 min in alcohol–water solution at 82°C and normal pressure. The prepared MoS x particles were studied by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), tran…
The maximally localized Wannier functions (MLWFs) of 32 ${A}^{N}{B}^{8\ensuremath{-}N}$ compounds, ranging from elemental group-IV solids to I-VII compounds, have been constructed according to the method of Marzari and Vanderbilt [Phys. Rev. B 56, 12847 (1997)]. The considered systems crystallize in the diamond, zinc-…
The dielectric definition of average energy gap E g of the chemical bond has been calculated quantitatively in Eu 3+ -doped 30 lanthanide compounds based on the dielectric theory of chemical bond for complex structure crystals. The relationship between the experimental charge transfer (CT) energy of Eu 3+ and the corr…
The luminescent properties of concentration dependence are reported in BaMg2Si2O7:Eu2+,Mn2+ red phosphor. It is observed that the broad red emission of Mn2+ consists of two bands, located at 620 and 675 nm, respectively, which are attributed to two different Mn2+ centers [Mn2+(I) and Mn2+(II)] substituting for two non…
Several new optically active liquid crystal dimers comprising pro‐mesogenic cholesterol and a chiral diphenylacetylene (tolane) segment, covalently linked in an end‐to‐end fashion through a flexible spacer, have been synthesized and investigated for their mesomorphic behaviour with the aid of optical, calorimetric and…
Strontium titanate (SrTiO 3 ) is a perovskite material with a variety of useful yet complex surface structures. Recent studies of SrTiO 3 have revealed how surface treatment can give rise to multi-functional surfaces, with attributes ranging from blue-light emission and high electrical conductivity to photocatalytic a…
Abstract A series of electrically conductive polypyrrole/clay nanocomposites were synthesized in this work by using one‐pot emulsion oxidative polymerization of pyrrole in the presence of unmodified clay and using DBSNa as the surfactant. The effect of surfactant on the morphological and electrical properties of PPy a…
BACKGROUND AND OBJECTIVE: The inability of radiotherapy to eradicate completely certain human tumours may be due to the presence of resistant hypoxic cells. Several studies have confirmed the radiosensitizing effect of paclitaxel, a microtubular inhibitor. The object of this study was to evaluate the physicochemical c…
Tunable Poly(dimethylsiloxane) Topography in O2 or Ar Plasmas for Controlling Surface Wetting Properties and Their Ageing, Tsougeni, Katerina, Tserepi, Angeliki, Boulousis, George, Constantoudis, Vassilios, Gogolides, Evangelos
We present novel insight on like-spin domains (LSD) in cooperative spin transition solids by following the photo-transformation and the subsequent relaxation of a [Fe(ptz) 6 ](BF 4 ) 2 single crystal in the vicinity of the light-induced instability. Self-organization under light is observed, accompanied by Barkhausen-…
SF6gas has been widely used in electrical power equipment such as circuit breakers and transformers due to its superior insulation and interruption characteristics. However since 1997, SF6gas has been designated a greenhouse gas subject to emission restrictions at COP3 (The 3rd session of the Conference Of the Parties…
ZnSe sub-microstructures with different morphologies, sizes, and microstructures were synthesized by a modified vapor deposition method using CdSe nanocrystals (NCs) as the seeds. On the basis of the appearance of the as-synthesized products, we show that the substrate temperature and CdSe NCs are the critical factors…
The aging of insulating materials and insulating systems involves physical and/or chemical changes of the insulating material. These changes in turn lead to changes in the dielectric response of the insulating system. Quantitative measurements of the dielectric response function can be performed using either time or f…
In inverter-fed motor coils, surge voltages with the rise time of several tens or hundreds of nano-second may cause partial discharge (PD) and degradation of electrical insulation performance of the inverter-fed motor coils. This paper discusses PD inception characteristics as well as PD propagation characteristics af…
Mouse embryonic stem cells were cultured on commercially available biodegradable macroporous microcarriers. A culture period of 1-2 weeks was needed to colonize the microcarriers. Embryonic stem cells retained their pluripotency for up to 14 days when cultured in medium supplemented with leukemia inhibitory factor. Re…
Abstract Metal nanoparticle (NP)–polymer nanocomposite thin films are attractive for applications in various devices. Since bimetallic NPs provide additional opportunities for tuning the physical properties of the NP components, the development of bimetallic NP nanocomposite thin films should lead to further enhanceme…
Two models of interacting bubble dynamics are presented, a coupled system of second-order differential equations based on Lagrangian mechanics, and a first-order system based on Hamiltonian mechanics. Both account for pulsation and translation of an arbitrary number of spherical bubbles. For large numbers of interacti…
When a high-frequency ac voltage is applied to ZnS:Cu,Cl and ZnS:Cu,Mn,Cl devices, optical fluorescence, known as ac electroluminescence (EL), is observed; it depends on both the Cu (Mn) and Cl dopants. The local structure of these compounds was studied using the extended x-ray-absorption fine-structure (EXAFS) techni…
Non-covalent porphyrin dyads and triads containing N 3 S porphyrin and RuN 4 porphyrin subunits were synthesized by treating meso-pyridyl-21-thiaporphyrin with RuTPP(CO)(EtOH) in toluene at refluxing temperature. The dyads and triads were characterized by various spectroscopic techniques and the properties were compar…
Abstract The influence of hard magnetic strontium ferrite filler content on the structure, vulcanization characteristics, magnetic and mechanical properties of rubber blends was studied. The variations of rubber–ferrite composites properties were evaluated as a function of ferrite and carbon black loading by applicati…