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。
For a long time, adipose tissue was only considered for its crucial role in energy balance and associated diseases. The discovery of the presence of immature cells highlights a putative role for these tissues as reservoirs of therapeutic cells. Indeed, since fat pads can be sampled by liposuction under local anesthesi…
Proton-donor ability of carboxylic groups incorporated by co-condensation into SBA-15 and ethane-bridged periodic mesoporous organosilica (PMO) has been studied through IR spectroscopy by dosing ammonia, which forms reversibly COO(-) groups and NH(4)(+) ions. The related equilibrium constants, determined by elaboratio…
Abstract Surface graphitization of 4H‐SiC (0001) at high temperature up to 2100 °C in ultra high vacuum (UHV) was observed for the first time in this study. From precisely controlled SiC step‐terrace surfaces, uniform graphitized surface morphologies with large terraces appeared at anneal temperatures above 2000 °C. A…
UNLABELLED: Extravasation of therapeutic (90)Y-ibritumomab tiuxetan can cause significant injury. Detection of extravasated (90)Y using a γ-camera for patients undergoing (90)Y-ibritumomab tiuxetan therapy is a challenge because of the inherently low efficiency of bremsstrahlung imaging and the interference of prompt…
The responses of the electrical and optical characteristics of an organic light-emitting device (OLED) with fac-tris(2-phenylpyridinato-N, C2′) iridium (III) [Ir(ppy)3] doped in a polymer matrix to compressive stresses were studied. The OLED converted stresses as low as 6.8 kPa into measurable and reversible changes i…
For the first time, sol–gel derived metal fluorides (MgF2, AlF3 and CaF2) were used in the preparation of three-dimensionally ordered macroporous solids with complex pore structures (macro-, meso- and micropores). These metal fluorides exhibit surface areas larger than 300 m2 g−1 and show medium to strong Lewis acidit…
Abstract We studied the ferromagnetic phase transition and the resultant change in the optical band gap of GdN thin films grown by a reactive sputtering technique in an ultra‐high vacuum process. The GdN thin film exhibited two phases of spin ordering; the short correlation of spins starts to develop below ∼60 K, and…
We explore the excitation profile of a repulsive impurity doped quantum dot. The quantum dot is subject to a discontinuously reversing static electric field. The dopant impurity potential chosen assumes Gaussian form. The investigation reveals how impurity strength and impurity domain can influence the excitation rate…
Recently, light-induced domain reversal has been developed to a promising method for domain engineering, but the depth of reversed domain is only of several tens of microns, which greatly limits its practical applications. In this Letter, we fabricated domain patterns on the –z face of 1.0 mol % Mg doped near-stoichio…
In situ observations of phonon Raman and Boson scattering were performed in high-Nb2O5-content barium–sodium aluminophosphate glass, which crystallizes tungstenbronze-type Ba2NaNb5O15 (BNN), during heating and subsequent cooling processes in order to examine the BNN crystallization dynamics and phase transitions. It i…
In the present work, we report the growth and properties of pulsed laser deposited epitaxial bilayer structures of Fe3O4/ZnO and ZnO/Fe3O4 on single crystal Al2O3 (0001) substrates. In order to check the structural compatibility of these structures we annealed these samples at different temperatures. Interface between…
Inspired by recent progress of experimental fabrication of carbon structure [Borrnert et al., Phys. Rev. B 81, 085439 (2010)], we proposed a scheme to generate spin-polarized current based on an all-carbon system consisting of carbon nanotube and chain. The transmission spectra are calculated based on density function…
The properties of hydroxyl groups on C(111)-(1 × 1) and reconstructed (2 × 1) surfaces at different sites and for various coverages are investigated using density functional theory. Out of the adsorption sites considered, i.e. face centred cubic, hexagonal close packed, on-top and bridge sites, the on-top site is the…
The preparation of micelles based on polystyrene-block-polyglycidol (PS-b-PG) in a selective solvent and their loading with titanium(IV)-isopropoxide, a precursor for titanium dioxide, nanoparticles is described. The formation of micelles was studied with scanning force microscopy (SFM) and transmission electron micro…
Abstract Two terthiophenes bearing core fluorinated thienyl units have been synthesised as potential semiconductor materials for organic field‐effect transistors. Polymerisation of these compounds has been achieved using conventional iron(III) chloride oxidative coupling methods and by electrochemical oxidation. Chara…
Polymers have been prepared by the polycondensation of 4,4′-(butane-1,4-diylbis(oxy)) bis(butane-4,1-diyl) bis(4-aminobenzoate) and 5,10,15,20,25,30,35,40,45,50,55,60-dodecaoxatetrahexacontane-1,64-diyl bis(4-aminobenzoate) (PBBA 1200) with three dianhydrides based on naphthalene, perylene and phthalic moieties, respe…
Excitation power dependent photoluminescence (PL) spectroscopy was employed to determine the thermal degradation of InGaN quantum wells (QWs) structure with different Si doping in well region. At a low excitation power density, PL intensity of undoped InGaN well was significantly decreased, while those of interfacial…
Decay processes of artificial two-domain structures with various distances in LiNbO3 crystals were carefully investigated using scanning probe microscope. The decay behavior of the composite domains is found closely related to the set domain distance. Detailed analysis indicates that the tip field mostly affects the l…
The simplified one‐step hydrothermal synthesis, in which SiO 2 is directly reacted with aqueous NaOH in the presence or absence of tetrapropylammonium bromide (TPABr) and tetrabutylammonium bromide (TBABr) as the template compound, was investigated. The reaction in the absence of the template compounds leads to the pr…
A series of recent studies have provided initial evidence about the role of specific intra-molecular interactions in maintaining proteins in their soluble state and in protecting them from aggregation. Here we show that the amino acid sequence of the protein monellin contains two aggregation-prone regions that are pre…