Materials Literature
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We have deposited cluster-free B-doped hydrogenated amorphous silicon (a-Si:H) films using a SiH4+B10H14 multi-hollow discharge plasma chemical vapor deposition (CVD) method. We have studied the dependence of the deposition rate, band gap, and conductivity of the films on the gas flow rate ratio R=[B10H14]/[SiH4]. The…
機能性色素を用いた太陽電池は有機薄膜型および色素増感型が知られており，製造のしやすさから色素増感型が主流になりつつある。このような機能性色素としてフタロシアニン（PC）が注目されている。PCはQ帯と呼ばれる最高被占軌道－最低空軌道間のπ-π*遷移に基づく600～650 nm付近に極大吸収を有している。Q帯はPCのπ電子共役系を伸長することによって長波長側へ伸長することが可能であるが，さらにノン－ペリフェラル位に置換基を導入することおよびポルフィラジン環構造を歪ませることによって近赤外領域へシフトすることが報告されている。そこで本研究では，ここでは太陽電池などのデバイスとして用いることを前提とした新規の近赤外領域に吸収をもつPCとし…
Supposing the design of ethanol steam-reforming reactors, the authors conduct experiments for Cu/ZnO/Al2O3 catalyst. Using a household-use-scale reactor with well-controlled temperature distributions, the authors compare experimental results with chemical-equilibrium theories. It has revealed by Shinoki et al. (2011)…
Composite materials are ideal for structural application where high strength-to-weight and high stiffness-to-weight ratios are required. In particular, Aircraft and Spacecraft are the typical weight-sensitive structures in which composite material are cost-effective. A major purpose of lamination is to tailor the dire…
通过两次羟醛缩合反应合成了一种含呋喃共轭桥的有机非线性光学生色团分子2-二氰亚甲基-3-氰基-4-[2-(4-二乙氨基-苯乙烯基-呋喃基-5)-乙烯基]-5,5-二甲基-2,5-二氢呋喃(EFFC), 用IR谱、1H NMR谱以及元素分析表征确认了其结构. 热失重分析表明, 材料的热分解温度Td为250℃. 用密度泛函理论的B3LYP方法在6-31G基组下对这种生色团分子进行了结构优化, 并在相同基组下对分子的静态二阶极化率进行了计算, 分子的b0=6.5×10-28 esu. 将分子以18%的质量比与聚砜进行主-客体掺杂, 用溶胶凝胶法制备成膜后进行极化, 用二次谐波法对掺杂极化聚合物薄膜的电光系数进行测量, 其r33值最高达到…
A novel and new copolymer of 3-aminopropyltriethoxysilane (APTES) on epoxided ethylenepropylene-diene terpolymer (eEPDM) via Sol-Gel Process.EPDM was epoxidized with an in situ formed per formic acid to prepare epoxided EPDM (eEPDM).The effect of eEPDM concentration, APTES concentration, reaction time and reaction tem…
無電解Niめっきによるポリイミド（PI）上のシード層形成方法において，無電解Niめっき工程より前のいずれかの工程でPIをフッ酸に浸漬処理することで，密着強度が大幅に向上した。処理によりPI表面に粗さの増加や化学組成変化はなく，PI/シード層接合界面にも変化は現れなかった。しかし，めっき皮膜を引き剥がしたシード層側には多量のPIが付着しており，フッ酸処理の有無で引き剥がし界面が変化していた。さらに，処理後のPIでは色調変化や貯蔵弾性率の増加が確認され，PI自体の機械的物性が変化していることが明らかとなった。フッ酸処理による密着性向上効果は，弾性理論に基づいたPIの物性変化によるものと考えられた。
“Shittori” is a Japanese term defined as the sensation perceived with smooth, warm, and soft for a fabric. The “shittori” feeling for knitted fabrics with different stitch density was evaluated by the sensory evaluation of Japanese and Chinese. The mechanical, surface properties and air resistance, the maximum value o…
Indolo[3,2-b]carbazole (INC)のN位を反応部位として用い，脱離基をもつ二官能性モノマーと重縮合することで二つのタイプの新規インドロカルバゾール含有ポリマーを合成した．脱離基をもつ二官能性モノマーとして，ジハロアルカンを用いてINCをアルキレン鎖で連結したポリマーを，トシル基末端のオリゴエチレンオキシドを用いてエチレンオキシド鎖で連結したポリマーをそれぞれ合成した．いずれもガラス状ポリマーが得られ，アルキレン鎖からなるポリマーでは，共重合化することで溶解性が向上しスピンコート法で薄膜を作製できた．得られた共重合体は，INCの特徴である発光特性を示し，410–430 nm付近にINC由来の発光スペクトルパター…
ABSTRACT: IR, X-ray diffraction and thermal analysis were used to illustrate the structure of cerium and thorium laurate in solid state. IR results reveal that the fatty acid exists with dimeric structure through intermolecular hydrogen bonding and cerium and thorium laurate were ionic in nature. The X-Ray diffraction…
We report dispersion solution composition dependence of the adsorption layer structure and the physical and optical properties of aqueous phase-synthesized semiconductor nanoparticles (NPs). We synthesized cysteine (Cys)-capped CdSe NPs with well-defined core structures, dispersed them in a series of aqueous solutions…
In this study, a compression stress relaxation phenomena of three-dimensional fiber assembly for futon wadding use is investigated under high humidity condition, which simulates actual sleeping environmental condition. KES-G5 compression tester is used for the compression stress relaxation measurement, and humid air i…
Optically transparent single crystals of doped metal ion KAP crystals were grown in aqueous solution by slow evaporation technique at room temperature. Optical absorption studies revealed that doped crystals possess in the visible region. Transparency of the doped crystal is suitable for (NLO) application and UV is c…
The problem of pure bending of beams with rectangular and circular cross-section is solved at steady-state creep, taking into account the different characteristics of the material in tension and compression. Constitutive relations for steady-state creep are taken in the form of fractional functions. A comparison of so…
Ammonium perchrolate (AP) is the most useful oxidizer for the solid rocket motors (SRMs) under the present situation, however it is also the source of the environmental pollution close to the launch site. It is well known that HCl is exhausted through the firing of SRMs and its concentration reaches approximately 10 t…
Radicals produced in an atmospheric DC corona discharge above water are investigated by in-situ infrared absorption spectroscopy. It is found that HO2 radicals are produced in the corona discharge, and its relative concentration tends to decrease with the increase of the distance from water surface, namely with the de…
Single crystals of zinc succinate (ZS) with monoclinic structure were grown in silica gel medium. The functional groups in the crystal were analyzed by FT-IR Spectroscopy. Thermal degradation studies have been carried out by Differential Scanning Calorimetry (DSC). Dielectric constant and a c conductivity have been es…
アセタールコポリマー（Co-POM）の硝酸（HNO3）水溶液下における腐食挙動を調査し，重量，寸法，色，曲げ強さと分子量の変化から劣化度合いを評価した。浸漬後の試料表面は白から黄色に変化し，重量変化は潜伏期間を経て減少を示した。純水浸漬後の曲げ強度は、乾燥によってほぼ初期強度まで回復したが，HNO3水溶液に浸漬した試料では乾燥後も強度は回復しなかった。サイズ排除クロマトグラフィー測定から，HNO3水溶液によるCo-POMの劣化進行は試料表面付近に限定され，試料内部ではほとんど劣化は観測されなかった。腐食速度は腐食層の厚みから計算でき，それを用いることにより浸漬後の未腐食部の厚みと残存曲げ強度が予測できることを示した。これら検討から…
Abstract The NBO (natural bond orbital analysis), NICS (nucleus independent chemical shift) and 14N NQR (nuclear quadrupole resonance) parameters of the most stable tautomers of guanine in the gas phase were predicted using density functional theory (DFT) method. The NBO analysis indicated the π clouds in the both con…
Two-dimensional (2D) architectures, particularly porous molecular networks, on solid surfaces formed via self-assembly have received a great deal of interest because of the prospective applications in optoelectronics and tailor-made catalysis. We found that porous 2D molecular networks were formed at liquid-solid inte…