Materials Literature
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The mechanisms of silicon nanocrystal structure formation in amorphous Si films have been studied for a relative Ni impurity content varying between 0.1 and 10at.%, i.e., from a Ni doping range to the Si–Ni alloy phase. The films, deposited by the cosputtering technique at 200°C, were submitted to isochronal (15min) a…
Abstract The thermodynamic properties of the Al–Na and Na–Al–H systems have been assessed by combining the “calculation of phase diagram” approach with first-principles predictions. The Gibbs energies of the individual phases were thermodynamically modeled, where the model parameters were obtained from best fit optimi…
Vladimir F. Petrova* a LC Works , Camberwell, Australia * LC Works, 6/68 Brinsley Road, Camberwell, VIC, 3124, Australia E-mail: lcworks@hotmail.com The effect on the physicochemical and electro-optical properties of introducing the pyrimidine ring into the molecular structure of calamitic liquid crystals is discussed…
Highly oriented Al-doped ZnO ceramics were prepared by a high magnetic field method and their anisotropic thermoelectric properties were examined. The c -axis oriented specimen along the ab -plane showed a higher electrical conductivity compared to the a -axis and non-oriented specimens as a result of high electron mo…
Effects of Postdeposition Annealing on Electrical Properties of Mo-Doped Indium Oxide (IMO) Thin Films Deposited by RF Magnetron Cosputtering, Yamada, Naoomi, Tatejima, Tsukasa, Ishizaki, Hiroki, Nakada, Tokio
Quantitative polymerase chain reaction (qPCR) assays were developed to detect and quantify bacteria and some critical sub-populations related to gas and oil pipeline corrosion. The 16S rRNA, dissimilatory sulfite reductase, nitrite reductase, and methyl-coenzyme M reductase genes were targeted for the quantification o…
Synthesis, textural characterization, differential scanning calorimetry, and dilatometry studies are carried out on a new homologous series of N-(p-n-alkoxy benzylidene)-p-n-pentyloxy anilines (nO.O5) where n = 1–18. The lower homologues of this series (n = 1–5) and a higher homologue (n = 16) exhibit monotropic Liqui…
Morphological studies at the light microscopy (LM) and scanning electron microscopy (SEM) levels of selected fragilarioid diatoms within the genus Staurosirella Williams et Round occurring in North American streams and rivers are presented herein. The studied samples were collected by the U.S. Geological Survey's Nati…
Abstract Large‐scale synthesized single‐walled carbon nanotubes (SWNT) prepared by electric arc discharge method and a mixture of NiO and Y 2 O 3 as catalyst have been used as electrode materials for supercapacitors. N 2 adsorption/desorption measurement shows that the SWNT is a microporous and mesoporous material wit…
In this study, a number of photoconductive photodetectors made from GaSe1−xSx (0⩽x⩽1) series layered semiconductors are presented, which are suitable for the detection of energies in the range of visible to ultraviolet (UV). Each photodetector consists of a gallium chalcogenide photoconductor and an electronic amplifi…
A zymogen-derived protein, pepsin, appears to be incapable of folding to the native state without the presence of the prosegment. To better understand the nature of the irreversible denaturation of pepsin, the present study reports on the characterization of the stability and low-resolution tertiary and secondary stru…
Two full-scale isolation re-centring devices, embodying NiTi Shape Memory Alloy elements, were designed and manufactured as the final product of a European research project for the exploitation of SMA's in the seismic protection of structures (MANSIDE Project). The devices were subjectod to several experimental tests…
Freshly isolated porcine hepatocytes are a very attractive cell source in the cell-based therapies to treat liver failure because of unlimited availability. However, due to the loss of hepatocyte functions in vitro, there is a need to develop a functional culture system to keep the cells metabolically active. Here we…
In this paper, we summarize the results of an extensive investigation on the properties of MOS-type light-emitting devices based on silicon nanostructures. The performances of crystalline, amorphous, and Er-doped Si nanostructures are presented and compared. We show that all devices are extremely stable and robust, re…
The programming characteristics of a phase-change memory (PCM) cell with a chalcogenide layer contacted by a resistive heater are investigated by finite element modelling. As analyzed in this study, the characteristics are markedly affected by the resistivity of the phase-change chalcogenide material. A higher reset c…
ZnO varistors are nonlinear resistors used as surge arresters in power transmission and distribution for the protection of electronic devices. Electrical characteristics of these materials have been extensively studied, but their mechanical behavior is not completely understood. It has been suggested that the breakdow…
In symmetric polystyrene- block -poly(methyl methacrylate) (PS- b -PMMA) diblock copolymer thin films, lithium−PMMA complexes were formed with the addition of lithium chloride (LiCl), significantly increasing both χ and dielectric constant. These led to a transition in the kinetic pathway of the orientation of lamella…
Hollow glass microspheres coated with thin Ni films of various thicknesses (about 50–250nm) were obtained by electroless plating technique. The resultant magnetic microspheres had very low densities (∼0.39–1.28gcm−3) and low coercivities (<40Oe). As-plated films comprised of nanocrystallites embedded in amorpho…
We have prepared new all-organic ferroelectric liquid crystalline materials containing a polar and dichiral cyclic-nitroxide unit within the rigid core. These compounds show distinct ferroelectricity in SmC* phases. The spontaneous polarization (Ps) has been measured by the triangular wave method and the tilt angle ha…
The structural dynamics of the ring-opening reaction in a photochromic indolylfulgimide, a reversible, ultrafast photoswitch, is investigated by ultra-broadband time-resolved vibrational spectroscopy. The experimentally observed vibrational modes of the indolylfulgimide photoisomers C and E are assigned to normal mode…