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。
We have carried out $^{55}\mathrm{Mn}$ NMR measurements on ${\mathrm{Bi}}_{0.125}{\mathrm{Ca}}_{0.875}\mathrm{Mn}{\mathrm{O}}_{3}$ and $\mathrm{Ca}\mathrm{Mn}{\mathrm{O}}_{3}$. NMR signals have been observed for ${\mathrm{Bi}}_{0.125}{\mathrm{Ca}}_{0.875}\mathrm{Mn}{\mathrm{O}}_{3}$ at $4.2\phantom{\rule{0.3em}{0ex}}\…
Insulator contamination has been identified as the most important factor in the design of external insulation of high voltage transmission, sub-transmission and distribution systems throughout the world. In the electrical design of high voltage insulators, the design engineers need a simple and reliable tool when calc…
Abstract The reaction of V 2 O 5 with H 2 C 2 O 4 · 2H 2 O in the presence of H 3 BO 3 under hydrothermal conditions has afforded V 2 O 2 (OH) 2 (C 2 O 4 )(H 2 O) 2 ( 1 ), which crystallizes in the triclinic system, space group P $\bar {1}$ with a = 5.2405(10) Å, b = 5.7340(11) Å, c = 7.1778(14) Å, α = 76.44(3)°, β =…
A series of Ru(II) complexes, tcc-RuX2(POC4Pyr-P,O)2 (X = Cl (3), Br (4), I (5)), containing the hemilabile phosphine pyrenyl ether ligand 4-{2-(diphenylphosphino)phenoxy}butylpyrene (POC4Pyr (1)) are reported. The synthesis and spectroscopic properties of both the ligand, POC4pyr (1), and ligand oxide, P(=O)OC4pyr 2,…
The defect centres formed in the TL phosphor CaSO4:Dy,Ag are studied using the technique of Electron Spin Resonance. The Ag co-doped phosphor exhibits three glow peaks around 130, 220 and 375 degrees C in contrast with the two glow peaks observed in the CaSO4:Dy phosphor at 130 and 220 degrees C at a gamma ray dose of…
Intense local heating of $\mathrm{Si}{\mathrm{O}}_{2}$ is shown to occur during chemical vapor deposition growth of single-walled carbon nanotubes in the presence of an electric field. This gives rise to the Marangoni effect where strong convection currents are induced in the molten $\mathrm{Si}{\mathrm{O}}_{2}$ layer…
Fourier transform infrared absorption and photoluminescence (PL) spectroscopy were used to investigate the defects in a codoped ZnO : Al : N film grown on a Si (111) substrate. Two broad vibrational modes around 3000 and 3120 cm −1 were found, which may be attributed to the formation of N–H bonds in different configur…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
One of the most essential difficulties in heavy-ion dosimetry by means of thermoluminescence dosemeters (TLDs)--often seen as a serious disadvantage of TLD utilisation--regards the changing TL-efficiency with increasing linear energy transfer (LET) of the particle. This behaviour leads to a falsification of absorbed d…
A non-local elastic shell model is proposed for the first time in this study for considering the small-scale effect in axi-symmetric wave propagation in carbon nanotubes (CNTs). Two coupled radial and longitudinal modes, and one decoupled torsional mode, are derived from the developed non-local shell model. The small-…
Self-repairing processes in plants sealing fissures caused by natural growth processes (e.g. in the vine Aristolochia macrophylla) or by artificial injuries (e.g. in the common bean Phaseolus vulgaris) serve as concept generators for the development of a biomimetic coating for membranes of pneumatic structures based o…
Abstract Summary: A liquid‐crystalline (LC) compound, having a cinnamate moiety on each end of the molecule, was synthesized and irradiated with UV light in its LC phase in the presence of a triplet sensitizer. Various measurements of the irradiated sample revealed that the linearly structured LC oligomers were formed…
The self-assembled, nanoscale domains of a lyotropic liquid crystal are used as a compatibilizing platform for the simultaneous polymerization of immiscible hydrophilic and hydrophobic crosslinking monomers (see figure). The influence of the liquid crystal reduces phase separation, resulting in a material with propert…
We have examined transport mechanisms in amorphous solid water (ASW) by studying thermal desorption of layered nanoscale films of CCl4 and labeled ASW. The interlayer mixing observed near T approximately 150-160 K is inconsistent with a mechanism involving diffusion through a dense phase. Instead, intermixing occurs v…
Abstract Summary: CdS nanoparticles dispersed within poly(urethane acrylate‐ co ‐styrene) ( PUCS ) films were prepared using amphiphilic urethane acrylate nonionomer (UAN) precursor chains, which had a poly(propylene oxide)‐based hydrophobic segment and a hydrophilic poly(ethylene oxide) segment. CdS nanoparticles wer…
The magnetic properties of the hydrogenated single-walled carbon nanotubes (SWNTs) have been studied by the first-principles calculations. It is found that different distributions of hydrogen atoms on the SWNT surfaces have a significant effect on the magnetic order of the hydrogenate SWNTs. More importantly, it has b…
BaTiO 3 (BTO) films have been epitaxially grown on SrTiO 3 (001) and SrTiO 3 (111) substrates with a LaNiO 3 conductive layer as a template using pulsed laser deposition. X-ray diffraction θ–2θ and ψ scanning reveal that the epitaxial relationship for these samples fabricated at 600 °C and 700 °C are BTO[001]//LNO[001…
Abstract Summary: Soluble carbon nanotubes were prepared by treating SWNTs with sec ‐butyllithium and subsequently using the generated carbanions as the initiator to graft P t BA and P t BA‐ b ‐PMMA onto the surface of SWNTs. The anionic polymerization initiated by SWNTs‐bearing carbanions not only provides a powerful…
Abstract Summary: A facile and organic‐solvent‐free method for preparing thermoprocessable multiwalled carbon nanotube (MWCNT)‐filled thermoplastics is presented. MWCNTs are oxidized, neutralized, and then assembled with cationic soap‐free poly(methyl methacrylate) (PMMA) particles directly in water. The spontaneous e…
Rare earth terbium (Tb)-doped zinc sulfide (ZnS) nanocrystals (NCs) sized between 3 and 4 nm were synthesized via a co-precipitation reaction of precursors, zinc acetate (Zn(CH 3 COO) 2 ), terbium chloride (TbCl 3 · 6H 2 O), lithium fluoride (LiF) and thiocarbamide in a methacrylic acid/citric acid/methanol mixing sol…