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。
A series of trimethylamine-thioborane adducts, Me(3)N·BH(2)SR (R = tBu [2a], nBu [2b], iPr [2c], Ph [2d], C(6)F(5) [2e]) have been prepared and characterized. Attempts to access secondary and primary amine adducts of thioboranes via amine-exchange reactions involving these species proved unsuccessful, with the thiolat…
Single-crystal (100)-oriented YMnO${}_{3}$ thin films grown on (110)-oriented SrTiO${}_{3}$ substrates have been studied by polarized extended x-ray absorption fine structure to determine the Mn-O bond lengths. Using a simple geometrical model and previously reported x-ray diffraction data on the same samples, the Mn-…
Abstract The syntheses, structural characterization, and thermal degradation of a series of the new indium and gallium siloxide dimers [{Me 2 In(OSiEt 3 )} 2 ] ( 1 ), [{Me 2 Ga(OSiEt 3 )} 2 ] ( 2 ), [{Me 2 In(OSi(O t Bu) 3 )} 2 ] ( 3 ), [{Me 2 Ga(OSi(O t Bu) 3 )} 2 ] ( 4 ), and In[OSi(O t Bu) 3 )] ( 5 ) is reported. C…
Abstract Copper‐based high strength and high electrical conductivity nanocomposite wires reinforced by Nb nanotubes are prepared by severe plastic deformation, applied with an Accumulative Drawing and Bundling process (ADB), for the windings of high pulsed magnets. The ADB process leads to a multi‐scale Cu matrix cont…
In this study, a proton nuclear magnetic resonance (1H NMR) method was developed to quantitatively analyze polyhydroxyalkanoate (PHA) content in Cupriavidus necator H16, Azotobacter vinelandii AvOP, and mixed microbial cultures from the effluent of an agricultural waste treatment anaerobic digester. In contrast to pre…
Abstract In the present article, we have revisited the electronic band gap nature of ZnOxS1−x (0 ≤ x ≤ 1) with the recently developed modified Becke and Johnson exchange potential and the calculated band gaps are found consistent with the experimental results. We expect that the band gap bowing parameter obtained in t…
The polyaniline/single-walled carbon nanotubes (PANI/SWNTs) composites with a content of SWNTs varying from 8 wt% to 32 wt% were synthesized using a solid-state synthesis method. The structure and morphology of the samples were characterized by fourier transform infrared (FTIR) spectra, ultraviolet-visible (UV-vis) ab…
Herein, a one-step in situ plasma approach to synthesize the highly dispersed Pt nanoparticles on graphene under mild conditions is reported. The graphene oxide (GO) was transformed into graphene and H2PtCl6 was simultaneously transformed into Pt nanoparticles under argon plasma conditions. The synthesized graphene-ba…
Aerobic oxidative homocoupling of arylboronic acid under acidic aqueous conditions (pH 4.0) using bimetallic Au/Pd alloy nanoclusters stabilized by chitosan has been investigated. It was found that a Au0.81Pd0.19 catalyst (3.1 ± 0.8 nm) exhibited superior catalytic activities as compared to monometallic Au (2.3 ± 0.3…
We report the design and fabrication of the complete visible range omnidirectional mirror, with a dielectric multilayered structure based on porous silicon (PS). The refractive index profile consisted of Bragg type chirped layers with an increasing thicknesses modulated by a potential envelop function f(x)=Cxk. The om…
Abstract A reversible solid oxide fuel cell (RSOFC) system, consisting of a RSOFC stack, heat store, and electrical inverters to convert DC to AC power, is shown by computer modeling to have the potential to efficiently store electrical energy. This paper describes the modeling of a single RSOFC, based on a proposed c…
In this letter, we report on the improvement of the electronic properties of graphene by capping with π-conjugated organic semiconductor molecules. The off-state current is reduced while the on-state current and mobility are either unaffected or increased. The semiconductors employed included α-sexithiophene and hexad…
Room temperature photoluminescence was measured from p-type Czochralski silicon processed to contain oxide precipitates. No detectable luminescence was associated with unstrained oxide precipitates. Strained oxide precipitates gave rise to a broad luminescence peak centred at ∼1600 nm. The intensity of the peak increa…
Carbon nanotubes (CNTs) were modified with polystyrene (PS) using self-initiated photografting photopolymerization. In order to optimize their utilization in CNT/polymer nanocomposites, a thorough characterization of their dispersions in solvents is of key importance. Using small-angle scattering, we have studied the…
We present a model to understand the effect of temperature on the electrical resistance of individual semiconducting single wall carbon nanotubes (s-SWCNTs) of various diameters under various electric fields. The temperature dependence of the resistance of s-SWCNTs and metallic SWCNTs (m-SWCNTs) are compared. These re…
Two obvious Gauss peaks are observed in SiN(x)-based light-emitting devices with silver nanoparticles deposited onto the luminous layer, both of which are blue shifted with the increase of injected current. The origin of these two peaks is discussed by means of the changes of their positions, relative intensities, and…
The model of an edge misfit dislocation at the interface of the hollow nanopore and the infinite substrate with surface/interface stress is investigated. Using the complex variable method, analytical solutions for complex potentials of a film due to an edge misfit dislocation located in the film with surface/interface…
Quantum chemical calculations of the structure, molecular electrostatic potential and thermodynamic functions have been performed using the density functional (DFT/B3LYP) method with the 6-311++G(d,p) basis set for the title compound 1-[N-(2-pyridyl)aminomethylidene}-2(1H)-Naphtalenone. The energetic behavior of the t…
The thermoelectric properties of polycrystalline nanostructured EuTiO3−δ samples are improved by a substitution of 2% Nb for Ti. The figure of merit (ZT) was measured to reach ZT(EuTi0.98Nb0.02O3−δ) ≈ 0.4 at T = 1040 K while ZT(EuTiO3−δ) ≈ 0.3 at the same temperature. X-ray photoelectron spectra reveal that the in-gap…
In this paper, the pressure and temperature conditions of the synthesis of a recently discovered golden Th${}_{2}$S${}_{3}$-type phase of titanium sesquioxide (Ti${}_{2}$O${}_{3}$) are studied, along with its physical properties. In combined x-ray diffraction and Raman high-pressure studies at room-temperature we foun…