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。
The authors report on the generation of localized defects on single-walled carbon nanotubes by means of a hydrogen electron cyclotron resonance plasma. The defects have been investigated using scanning tunneling microscopy (STM) and show an apparent topographic height in the STM of 1–3Å. In the vicinity of defects, ch…
The unique photochromic bis-chromene 5 incorporates the structural attributes of both 3 and 4 . UV-vis irradiation of 5 leads to a dark brown colour, which is formed by mixing the purple and red colours observed for the photolysates of 3 and 4 , respectively.
Three methods for the preparation of Au nanowires using SPG as a template are presented: in particular, the reshaping of 1D-aligned Au nanoparticles linked to the SPG structure yields 1D-aligned Au nanowires using chemical reduction after photoinduced dissociation, and this new method is very powerful for creating con…
Quinoline-based, tetradentate nitrogen ligands, N,N'-bis(2-quinolylmethyl)-N,N'-dialkyl-1,2-ethanediamine (alkyl = methyl, bqdmen; ethyl, bqdeen; isopropyl, bqdpen), have been investigated as the supporting ligands for the formation of bis(micro-oxo) dinuclear manganese complexes. Bis(micro-oxo)Mn(2)(iii,iii) complexe…
Due to the significant raw-material costs, the near net-shape manufacture of titanium alloy components is an attractive proposition. Processing through melting and solidification allows manipulation of the bulk composition and control of the microstructure. This research examines the effect of commonly used alloying a…
Zinc oxide (ZnO) films having thickness in the range from 15 nm to 208 nm have been fabricated by the sol-gel technique by varying number of sequentially deposited layers. The structural, optical and electrical properties of ZnO films were investigated as a function of film thickness. The crystallinity and degree of o…
The electronic and optical properties of ZnO doped with 3d transition metals with wurtzite structure are studied with density functional theory based on ultra-soft psuedopotential. The cohesive energy, density of state, band structure, and optical absorption properties are calculated. Furthermore, we analyzed the chan…
This paper presents a simple yet predictive compact model for phase change memory (PCM). We successfully implement the model in a circuit simulator using Verilog-A. Due to the physical nature of the model, it can be used to predict the temperature and crystalline fraction in the cell, simply via SPICE simulation. This…
Continuous fiber-reinforced ceramic matrix composites(CMC) are proved to be the most attractive materials in the development of high-tech fields,such as aeronautics,astronautics and so on.Among these composite materials,continuous fiber-reinforced silicon carbide ceramic matrix composites(CMC -SiC) have been deeply re…
Hingganite-(Ce), Ce2[]Be2Si2O8(OH)2 or CeBeSiO4(OH), occurs in a pegmatite at Hirukawa-mura, Gifu Prefecture, Japan. It is pale tan in color, vitreous and transparent, with a white streak. The Mohs hardness is 5-6, and the calculated density is 4.28 g/cm3. An electron microprobe analysis gave the empirical formula (Ce…
Biomedical β-type titanium alloys have been developed or are under development all over the world. In particular, researchers in Japan have been developed Ti-29Nb-13Ta-4.6Zr alloy (TNTZ)—β-type titanium alloy—for biomedical applications. Bioactive ceramic surface modification is effective for further improvement in th…
nanograins synthesized via the sol-gel route suffer from strong capacity fading on cycling. The latter is characterized by the emergence of polarized redox processes at the expense of initial ones. From present investigations, bulk is not altered during the fading process, although parts of the electrode show a decrea…
A control scheme for fuel cell (FC) generation system is proposed in this paper to increase the transient stability and damping performance of micro-grids. With aids of ultracapacitors (UC) and the fast adjustment of power electronic conditioning systems, FC generation system can bring many benefits to distribution sy…
The dissolution characteristics of small molecule photoresist films in supercritical CO2 are measured using laser interferometry. These small molecule photoresists, referred to as molecular glasses, have shown impressive CO2 solubility in recent reports, and in order to understand this behavior the structure–property…
A (perarylcyclopentadienyl)molybdenum(VI) dioxo complex is shown to catalyse epoxidation of cyclooctene by t-butylhydroperoxide, but decomposition to a much more active non-cyclopentadienyl containing catalyst occurs as the reaction proceeds.
Particular focus of this article will be managing the environmental risks and benefits of nanotechnology. Currently, U.S. federal agencies do not actively regulate nanotechnology, but they have begun to assess its implications. This article attempts to assess the challenges that nanomaterials pose to the existing regu…
Trivalent dysprosium ( Dy 3 + ) -activated β-gallium oxide ( β – Ga 2 O 3 ) phosphors were synthesized by solid-state (SS), coprecipitation (CP), and citrate gel (CG) methods, respectively. The resulting β – Ga 2 O 3 : Dy 3 + phosphors were well characterized by X-ray diffraction, field-emission scanning electron micr…
Platinum-based anti-cancer agents have been used for many years to treat many different types of cancer. However, the efficacy of these drugs is limited by serious side effects. One of the strategies to reduce the side effects is encapsulation of the drug in a lipid formulation. Recently, we discovered a novel method…
We developed an interesting instrument in manufacturing a biodegradable polymer-insulated cable, with a variety of new functions. By using this instrument, we manufactured a poly-l-lactic acid (PLLA)-insulated cable. We measured the basic electrical insulation characteristic of the PLLA-insulated cable, and the follow…
CO2 photoacoustic spectroscopy was employed to analyze kinetically the CO2/CH4 reaction catalyzed by 14 wt% Ni/Al2O3 and 14 wt% Ni/TiO2. The catalytic reaction was carried out in the temperature range of 673-923 K at various partial pressures of CO2 and CH4 (40 Torr total pressure) in a closed-circulating reactor syst…