Materials Literature
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The magnetic properties of the system Mn2−xZnxSb are investigated experimentally in static and pulsed magnetic fields. It is found that the spontaneous first-order transitions from the ferro=imagnetic phase Fi to the weakly ferrimagnetic phase If which are observed on decreasing temperature in samples with x=0.1 and 0…
Purpose: This study has been undertaken in order to establish the influence of parameters of the electrochemical treatment of Ti –alloys on their electrochemical behaviour in Tyrod solution. Design/methodology/approach: Surface of the Ti-alloys: Ti6Al4V and Ti6Al7Nb in the form of a rod submitted to grounding, electro…
Purpose: In the paper the results of chemical composition investigations of passive layers formed on implants made of Cr-Ni-Mo steel, Co-Cr-W-Ni alloy and Ni-Ti alloy have been presented. Design/methodology/approach: Chemical composition investigations of the passive layer have been carried out with the use of X-ray P…
The algal communities and water quality were monitored at eight sampling sites around Mae Moh power plant during January-December 2003. Three biological indices, viz. algal genus pollution index, saprobic index, and Shannon-Weaver index, were adopted to classify the water quality around the power plant in comparison w…
The optical and electrical properties and surface morphology of sputtered, E-beam deposited, and composite E-beam/sputtered indium-tin-oxide (ITO) films for metal–semiconductor–metal (MSM) photodetector applications were compared. The resistivity of sputtered ITO was almost 2 orders of magnitude less than that of E-be…
Abstract Potentiodynamic polarisation and dynamic electrochemical impedance spectroscopic (DEIS) measurements were carried out in natural sea water on type 316L SS, Alloy 926 and Alloy 31. In order to study the localised corrosion resistance, the dynamic electrochemical impedance spectroscopy measurements were perform…
A low-cost substrate for the positive electrode of nickel/metal-hydride battery was developed by using a nonwoven cloth with a three-dimensional micronetwork structure, in which the amount of plated nickel was less than half compared with the conventional foam-type substrate. The substrate was designed to have a finer…
Abstract In recent years, functional polymers exhibiting inherently biological activities have been receiving increasing attention as polymer-based human therapeutic agents. These polymeric drugs exhibit unique pharmaceutical properties that are fundamentally different from their traditional small-molecule counterpart…
Site-specific, chip-to-chip fluidic connectors have been demonstrated via near-field electrospinning (NFES) in a fashion similar to the wire bonding technique in IC manufacturing. Electrospun polymer fibers function as the sacrificial material with deposition control better than 10 m in the planar direction to connect…
Silicon photoelectrodes, immersed in 40% electrolyte, exhibit large-scale fractal etch patterns at anodic potentials near . Depending upon light intensity and doping, three regimes were identified, characterized by etch-groove ramification, surface-lattice symmetry, and chaotic corrosion. The pattern formation in regi…
Single molecule level detection of the near-infrared fluorescent protein allophycocyanin (APC) has been achieved using surface enhanced resonance Raman scattering (SERRS). The detection limit using the peak height of the 440 cm(-1) band was 1 x 10(-13) mol l(-1), compared to 2 x 10(-12) mol l(-1) for the fluorescence…
Commingled yarns for composite applications consist of combination of high-performance filaments and matrix-forming thermoplastic filaments that have quite different tensile characteristics. The commingling process mixes these filaments along with introduction of nips and open sections alternately along the length of…
A Si wafer and polysilicon deposited on a Si wafer were planarized using catalyst-referred etching (CARE). Two apparatuses were produced for local etching and for planarization. The local etching apparatus was used to planarize polysilicon and the planarization apparatus was used to planarize Si wafers. Platinum and h…
In recent years, several alternative devices have been proposed to deal with inherent limitation of conventional CMOS devices in terms of scalability at nanometer scale geometry. The fabrication and integration cost of these devices, however, have been prohibitive and/or the devices do not allow smooth transition from…
This study deals with the effect of cross-sectional shape of yarn duct of interlacer on the performance of interlaced yarn and aims at finding the interlacers with better performance. The performance of the interlaced yarn is evaluated by the number and strength of tangles. Seven interlacers with different shapes of y…
Ternary phases in the systems Zr–As–Se and Zr–As–Te were studied using single crystals of ZrAs1.40(1)Se0.50(1) and ZrAs1.60(2)Te0.40(1) (PbFCl-type of structure, space group P4/nmm) as well as ZrAs0.70(1)Se1.30(1) and ZrAs0.75(1)Te1.25(1) (NbPS-type of structure, space group Immm). The characterization covers chemical…
In the aim to define a structure NLO properties relationship, theoretical calculations have been used to investigate the role of different parts (substituents and π-system) of disubstituted conjugated systems based on naphthalene, cinnoline and quinazoline moieties. Using metallation and cross-coupling reactions we re…
The layer-by-layer incorporation of monomers in the synthesis of dendrimers allows for variations in the functionalities between one layer and the next. However, incorporation of different functionalities in combination with the above would lead to the introduction of sequences in dendrimers. We review the three compl…
SUMMARIES The effect of three washing methods is compared with regard to the removal of acid compounds from aged paper: immersion washing, blotter washing, and suction table washing with the aid of ultrasonic mist. The authors identify and quantify the organic acids (acetic-, lactic-, malic-, oxalic- and succinic acid…
Blends of poly (epichlorohydrin-co-ethylene oxide) rubber (Zeon Hydrin ® C2000L) and polyaniline doped with dodecylbenzenesulfonic acid (PAni-DBSA), containing different weight fractions of PAni were cast from solution. Solubility parameters for both PAni-DBSA and Hydrin ® were calculated and found to be comparable, f…