Materials Literature
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We demonstrate complete tunneling of light through large- scale mu-negative media, which has negative permeability but positive permittivity, by constructing a quasi-one-dimensional structure with side branches. For the structure with a single side branch, there always exists a transmission peak which can be easily tu…
Copper planarization is of great interest in the microelectronics industry. In this work we monitored surface film formation on a copper wire in situ by tracking the time evolution of the system impedance in aqueous phosphoric acid, a condition relevant to electrochemical mechanical planarization (eCMP). First, potent…
Clothing comfort is a state of satisfaction indicating physiological, psychological and physical balance among the person. Though objective experiments are easy to measure, subjective experiment is rated an end-use performance test to collect the comfort sensation of wears. In this paper, objective and subjective expe…
Well defined isolated [V(IV)O(acac)(2)] surface complexes have been prepared on aluminium trifluoride, alpha-AlF(3), as solid support by equilibrium adsorption from liquid solution. The paramagnetic vanadium(iv) surface complexes were studied by pulsed electron spin resonance spectroscopy in combination with quantum c…
For the last two decades, intensive research has been focused on developing reinforced polymers with incorporation of nanometric fillers. Amongst the different types of nanofillers, those based on layered silicates (commonly known as clays), have been most widely investigated. Dispersing clay sheets on a nanoscopic sc…
The properties of molybdenum-doped ZnO (MZO) films deposited by radio-frequency (rf) magnetron sputtering and organic light-emitting devices (OLEDs) using an MZO film as an anode were investigated. A transparent conducting MZO film with high transparency and relatively low resistivity was prepared by rf magnetron sput…
Cu ion migration mechanism was investigated in damascene Cu/SiO2interconnects. Cu backward migration was investigated by AC TDDB test. When AC is applied, the Cu migration cannot be recovered completely because the direction of diffusion flux and drift flux is opposite. Therefore, lifetime of AC TDDB is slightly large…
Many yarns are made from chemical fibers with various kinds of functional properties, and filament yarn surpasses spun yarn in terms of mechanical properties. However, in this century, “comfort”, “safety”, “user-friendly” and “green” are key concepts. The Food and Agriculture Organization of the United Nations (FAO) o…
Diesel soot and reference carbon black samples have been characterised by analysis of the organic compounds fraction and determination of textural characteristics (specific area). The potential to eliminate such carbonaceous particles has been investigated using a Cu/ZrO2 solid catalyst promoted by potassium additives…
The inhibiting effect of phosphates and polyphosphates on the precipitation rate of calcium sulfate dihydrate (gypsum) in sodium chloride solutions has been studied using constant composition technique in which the super-saturation and ionic strength were maintained constant at 25°C. The presence of phosphoric acid H3…
We report an X-ray study of the order in a ‘side-on’ smectic-A elastomer in which both the polymer backbone and the mesogenic side groups are, on average, parallel to the smectic layer normal. The present system shows in all phases locally correlated structures as evidenced by systematic diffuse scattering at small an…
NH4HSによる腐食は，高濃度では異常な速さで進行する．特に，ある濃度を越えると急激に腐食が進行する特徴があり，局所的な過冷却なども考慮した，防食面からの機器の解析・設計が望まれる．特に当環境を含む水素化脱硫装置，水素化分解装置等高圧設備では，腐食漏洩により大事故に至る可能性があるため，設計段階での防食面の配慮が必要である．そこで，水素化脱硫装置付帯の廃水ストリッパーでのNH4HSによる腐食事例を基に，シミュレーションを適用した腐食解析を実施し問題を解決するとともに，防食設計の手法を確立したので，その内容を報告する．
Titanium tetrachloride vapor was selectively introduced into hexagonally arranged PEO cylinders in PEOm-b-PMA(Az)n ((m, n)=(272, 116), (272, 94), and (114, 67)) thin films by simply exposing the films to the vapor in a glass vessel. TEM images of PEOm-b-PMA(Az)n thin films with m=272 and 114 after the exposure showed…
We present two optical experiments which permits to evaluate individual and collective behaviours of molecules leading to a well-organized pattern in a randomly activated molecular assembly; in a first experiment a white light and a laser beam are sent together; in a second experiment a low-power coherent beam carryin…
A combinatorial screening method for corrosion research using an ion beam co-sputtering system and a microelectrochemical probe was proposed. Small chips of pure Cr and Mo were placed on a large Fe-11%Cr plate, and those were used as a complex target for co-sputtering. The composition gradients of the sputter-deposite…
Selective dissolution of hyper duplex stainless steel was studied by potentiodynamic and potentiostatic test in various concentrations of H2SO4/HCl solutions at various temperatures. There were two peaks in the active-to-passive transition region in potentiodynamic test in 2 M H2SO4 + 0.5 M HCl solution at 60°C. In po…
Significant work has been done on the characterization of SnAgCu solder alloys at low strain rates (10−6 to 10−2s−1), and as a result, the behavior of solder over these strain rate regimes is well understood. On the other hand, there is a lack of accurate and consistent data for solder at high strain rates. In this pa…
SPS-fabricated zirconia(3Y)/SUS410L FGM consisting of seven layers was characterized by microfocusing XRD and Raman scattering methods. The formation of monoclinic zirconia phase was verified in the interlayers with lower contents of zirconia(3Y) than 70vol% and the largest amount of monoclinic zirconia was detected i…
Peroxide vulcanization leads to formation of carbon–carbon cross-links, resulting in some cases in poor mechanical properties of the vulcanizates, which restricts the application of such materials in industrial goods. Therefore to improve the properties of the obtained vulcanizates coagents are added to the rubber com…
Na etapa de condicionamento de peças em acrilonitrila-butadieno-estireno (ABS), geralmente, são empregadas soluções sulfocrômicas, resultando na geração de efluentes altamente tóxicos e ambientalmente poluentes. Este trabalho apresenta resultados do estudo do emprego de soluções condicionantes visando à redução e subs…