Materials Literature
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After more than ten years of intensive studies on CMR manganites, the numerous results that have been obtained revealed an unpredicted richness of their chemistry and physics. In particular, the possibility to chemically tune the competition between the different ordering parameters linked to the degrees of freedom of…
Microstructure evolution of Ru layer deposited in N 2 gas has been investigated and compared with that deposited in Ar gas for Cu diffusion barrier application. Deposition of Ru in N 2 results in high N dissolution, seemingly uniformly distributed in the Ru layer. The film microstructure is a mixture of nanocrystals a…
This research aims to investigate the functionality of nano-precipitated calcium carbonate (NPCC) as filler in thermoplastic resins based on property enhancement. Three types of thermoplastics were used: polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC). The resins were evaluated by determining the ef…
We fabricated Co2MnSi/(Mg)/Al-O/CoFe MTJs using UHV magnetron sputtering. The interfacial chemical bond between Co2MnSi and Al-O was intensively optimized by changing plasma oxidation time for Al-O and by inserting a Mg layer. The Mg inserted layer between Co2MnSi and Al-O effectively suppressed the generation of inte…
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…