Materials Literature
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In this review, we report the basics and application of annular bright-field（ABF）imaging in scanning transmission electron microscopy（STEM）, which enables the direct imaging of light element atomic columns in crystals. In addition, we explain a recent technique for further enhancing the image contrast of light element…
Porous aluminum is a multifunctional material with both lightweight and high energy absorption properties. In this study, functionally graded (FG) porous aluminum was fabricated by spacer method varying pore structures. The obtained FG porous aluminum was observed non-destructively by X-ray computed tomography (CT). I…
Исследованы комплексообразующие свойства композита силикагель-полианилин с ковалентно закрепленным посредством реакции Манниха 8 оксихинолином по отношению к ионам Pb(II), Cd(II), Cu(II), Ni(II), Cо(II), Al(III), Fe(III) и Mo(VI).Полученный адсорбент имеет высокую сорб ционную емкость и удовлетворительные кинетические…
Clever structuring of dielectric and metallic composites can lead to effective electric, magnetic and anisotropic responses. When hybridized with nonlinear components, such ‘metamaterials’ can support a wide range of nonlinear properties characterized by effective nonlinear susceptibilities.
Cu2ZnSnS4(CZTS) nanocrystals synthesized by hot-injection method were utilized to fabricate kesterite thin film with nanocrystal-ink coating approach. Corresponding photovoltaic device achieves a power conversion efficiency of 2.29%.
TiO2 nanotube arrays with controllable lengths (500 nm, 1µm, 10 µm) were prepared in different electrolytes. The photocatalytic results showed that the 1-µm-long nanotube array had remarkable degradation efficiency.
The polyimide nanofiber superior in heat resistance was made by the electrospinning process. We tried this nanofiber as reinforced material of the thermoplastic polyurethane elastomer (TPU elastomer). For comparison, commercial polyimide microfibers were examined by using them as reinforced material. We evaluated test…
Molecular-level understanding of ice crystal surfaces holds the key to unlocking the secrets of various fields. To observe ice crystal surfaces at the molecular level, we developed an advanced optical microscope, and succeeded in visualizing individual elementary steps of 0.37nm in height on ice basal faces. Utilizing…
王子製紙（株）米子工場では，省エネ目標『総エネルギー使用量の1．5％削減』に向けて工場全体で省エネに取り組んでいる。しかし，新規案件や大きな省エネ効果を生む案件を発掘することが，年々厳しい状況となってきている。その中で工場ではテーマを絞り込んで，エネルギー使用量の削減を継続している。本稿では，工場で実施した以下の省エネ事例を紹介する。また，随所に予稿集では掲載していなかった具体的なデータを書き加えた。1）過剰能力設備の省エネ2）発電設備運用見直しによる省エネ3）無負荷時の駆動電力の省エネ4）生産に寄与しない電力の省エネ取り組みは，設備費が高額となる機器交換やインバーター化は採用せず，安価に短期間で施工可能なアジテータのプーリー小径…
Graft copolymerization of poly(ethylene terephthalate) (PET) to cellulose was attempted via esterification of cellulose with benzoyl chloride and terephthaloyl dichloride. The esterification of cellulose was performed in 8wt% LiCl/DMAc under reflux in N2 at 100°C using pyridine as basic catalyst. Cellulose benzoate te…
We study the dynamics of photo-induced MIT in VO2 films of different substrates with a pump-probe experiment at various temperatures, and also investigating the propagation of surface plasmons on VO2 in the metallic phase.
以H2O2和V2O5为前驱物,利用H2O2和V2O5特殊化学作用制备V溶胶,而后在云母基底上成膜,经不同热处理温度(450～570℃)退火还原得到VO2薄膜。利用SEM、XRD、XPS分析薄膜表面形貌和微观结构,利用FTIR检测薄膜在不同温度下红外透过率,确定薄膜的相变温度及滞后温宽。实验表明,双氧水法制备的VO2薄膜红外屏蔽效率高,且高温透过率仅为2%左右。热处理温度对VO2薄膜表面形貌、微观结构及相变特性均产生影响。510℃热处理退火可得到生长致密、粒径分布均匀、相变温度低、滞后温宽较小的VO2薄膜。
Приготовлена новая смешанная композитная система [Ag2HgI4:0.2AgI]:хKI (х = 0.2, 0.4, 0.6 мол. %); в качестве “хозяина” использовалась композитная система [Ag2HgI4:0.2AgI]. Для исследования фазового перехода измерялась электропроводность на частоте 100, 120 Гц, 1 и 10 кГц в интервале температур от 90 до 170°С. Во время…
A drop actuation utilizing the wettability change by laser beam irradiation was studied by numerical simulations. The drop is actuated because surface tension force acts on the irradiated side more strongly in the wall parallel direction due to the smaller contact angle on that side. On the other hand, the temperature…
The influence of multiple quantum wells with different barriers on the characteristics of the near ultraviolet light emitting diodes was numerically investigated.Using single GaN,single Al0.1Ga0.9N,trilaminar Al0.1Ga0.9N/Al0.15Ga0.85N/Al0.1Ga0.9N as barriers to study the characteristics of internal quantum efficiency,…
在Ag—Cu—Ti合金中加入一定量的TiC颗粒制成复合钎料，进行细粒度金刚石磨粒与45钢基体的真空钎焊实验。运用三维视频显微镜、扫描电镜和x射线衍射仪分析TiC颗粒、Ag-Cu—E合金和金刚石磨粒之间的结合界面。结果表明tTiC颗粒能有效降低试验工艺下Ag—Cu-Ti合金在基体表面的流动性和结晶时产生的隆起，复合钎料在基体表面分布更趋平整，有利于细粒度金刚石钎焊等高性的控制；适量TiC颗粒在结合剂层中的均匀分布，能显著细化结合剂层的显微组织；复合钎料中添加TiC颗粒在实现细粒度金刚石磨粒与钢基体钎焊连接的同时，有效抑制了钎料合金对细粒度金刚石磨粒过度浸润所造成切削刃的包裹．保证了细粒度金刚石磨粒良好的出露。
An analysis on plastic instability theory together with some constitutive equations involving strain, strain rate and temperature leads to simple conclusion, which suggests an increase of uniform strain range by falling off temperature intentionally during the process. To evaluate the above prediction, the concept of…
Silicon nitride nanopowder was fabricated from a silicon nitride sub-micrometer powder by high energy milling. The sub-micrometer Si3N4 powder, 2 mol% of Al2O3 and 5 mol% of Y2O3 are mixed and then high-energy milled with Si3N4 balls as milling media in a Si3N4–lined pot filled with N2. Silicon nitride nanopowder with…
摘要： 针对超导极向场(Poloidal field, PF)超导导体外方内圆的结构特点，以ABAQUS软件分析为手段，采用四辊轮缩径成形工艺对导体缩径成形进行研究。对缩径成形原理、变形区金属的流动规律和横截面受力情况进行理论分析，设计四道次成形工序，并通过拉伸试验获得导体材料316L不锈钢的应力应变曲线。数值模拟结果表明导体缩径过程中应力应变分布不均匀，最大应力出现在接触位置后端，应变集中在四个圆角部位，符合金属流动最小阻力定律。在分析软件中测量变形后导体的截面尺寸，在规定的使用范围之内。在自主设计的成形机上进行试验，取5个不同截面测量尺寸并取平均值，所得结果与模拟结果相近，符合导体尺寸要求，验证了该成形方案的可行性。
We extend to you a warm and sunny Aloha in celebration of the 23 rd American Peptide Symposium and the 6 th International Symposium. The meeting theme, Peptides Across the Pacific, embraced the spirit of the scientific and social program. Peptides Across the Pacific encompassed the important role that peptide science…