Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Nanostructures with chiral shapes show optical activity. The optical activity of the chiral nanostructure may be regarded approximately as an integration of contributions from optical activity of local sites over the entire nanostructure. In this article, we describe our recent experimental efforts to realize 100-nm-s…
The magnetic field effects on the synthesis process, decomposition process, and the phase equilibrium of materials have been investigated via thermal analysis experiments in high magnetic fields (HF-DTA). In this review, the thermal analysis systems in high magnetic fields are described. The typical results obtained b…
Surface and interfacial dynamics and surface mechanical properties are important for both fundamental and practical aspects. In this paper, our recent researches on 1) surface molecular motion and frictional properties of organosilane monolayer immobilized on Si-substrate, 2) characterization of mechanical and thermal…
本研究では，分子鎖の末端間で酸–塩基相互作用する水溶性の両末端アミノ化ポリエチレングリコール(APEG)と疎水性の末端カルボキシル化ポリメタクリル酸メチル(CPMMA)のブレンドの水中での会合挙動を小角X線散乱により検討した．APEG-CPMMAブレンドは両親媒性ブロック共重合体と同様に，APEGの選択溶媒である水中に均一に分散した．しかし，会合体の構造は調製法に強く依存した．ラメラ繰返し構造をもつAPEG-CPMMAブレンド固体を直接水に分散させた場合，疎水性コアの厚さが4.2 nm，全体の厚さが11.0 nmであるコアシェル型の円板状会合体を形成するが，テトラヒドロフラン溶液から溶媒置換法により調製した場合，疎水性コアの半径が…
A chromium-molybdenum steel composed of 0.20 mass% carbon was used as a starting material. Two kinds of specimens having different case depths were made by carburizing and quenching. Using the scanning electron microscope, the crystallographic information was measured on the cross-sectional hardened layer by electron…
Current Si-based photovoltaic devices are expensive due primarily to high-quality raw materials and elaborate fabrication, drastic performance improvement and cost reduction are necessary for extensive applications. Two-dimensional layered materials such as graphene, metal dichalcogenides, and topological insulators h…
Surface-enhanced infrared absorption (SEIRA) spectroscopy employs noble metal nanoparticles or nanostructures to enhance the characteristic absorption spectra of certain molecules. These plasmonic nanoparticles or nanostructures act like antennas and demonstrate great potentials for single molecule or monolayer biosen…
Методами дифференциального термического и рентгенофазового анализа изучены фазовые равновесия в системах МF2 YbF3 ScF3 (М = Cd, Mg). Системы эвтектического типа без образования промежуточных фаз. Имеют место только твердые растворы на основе CdF2, - и -YbF3. Область устойчивости твердых растворов на основе -YbF3 расши…
圧力は圧縮により高分子の構造を直接変化させることで，熱を用いた場合とは異なる高分子の特性を引き出すことができる．近年ではさまざまな分野で圧力を積極的に利用した取り組みがなされており，その基礎的理解の必要性が高まっている．本報では圧力研究の例として，筆者らがこれまでに行ってきた高静水圧下における高分子水溶液の相挙動とCO2圧力下における高分子固体の物性制御を中心に紹介する．前者では，高分子水溶液の相分離やタンパク質の凝集，折りたたみなどをひき起こす疎水性相互作用の働きに着目し，高分子と水和水間の水素結合の働きが低下することで，疎水性相互作用の働きが低下することを明らかにした．また，共貧溶媒性を利用して高分子の水和状態を変化させること…
Ceramic materials have been a promising candidate for structural materials under severe conditions. While metals are large components of spacecraft, ceramic materials are often significant components of optical and thermal protection systems of space structures. Because these ceramic materials are much more sensitive…
Recently the interest in permanent-magnet synchronous machines operating at high speed has grown. However, a lot of design and operation questions have not been answered yet. One of these questions relates to the stator design. More specifically, whether or not to provide stator teeth and what slot openings are best u…
The intuitive Generalized Harvey-Shack (GHS) surface scatter theory has evolved into a practical modeling tool to calculate BRDFs from optical surface metrology data for situations that violate the smooth surface approximation implicit in the Rayleigh-Rice theory and/or the paraxial limitation of the Beckmann-Kirchhof…
Coordination polymers (CPs) or metal-organic frameworks (MOFs) are attractive porous materials because of their potential applications such as molecular storage, separation, heterogeneous catalysis, chemical sensing and others. Recently, nano-sized MOFs have been studied as drug delivery vehicles and biomedical imagin…
Bismuth sodium titanate (BNT) has been widely recognized as a lead free piezoelectric materials to replace PZT. Doping or substitution with other ferroelectric perovskite has been employed to improve the properties of BNT. In the present attempt, we have developed SrTiO 3 as a dopant to enhance dielectric behavior of…
通过熔融共混法制备了聚酰胺11/乙烯-辛烯共聚物/马来酸酐接枝乙烯-辛烯共聚物（PA11/POE/POE-gMAH）三元共混合金,研究了POE-g-MAH及混合弹性体（POE/POE-g-MAH）的用量对该合金力学性能的影响。利用扫描电子显微镜（SEM）观察了PA11/POE/POE-g-MAH合金的冲击断面形貌,并采用动态热机械分析仪（DMA）表征了该合金材料的动态力学性能。结果表明：当混合弹性体POE/POE-g-MAH的配比为4/3,且其用量为25%时,PA11/POE/POE-g-MAH合金的综合力学性能最佳。适量POE-g-MAH的加入有助于弹性体分散相的细化,从而使弹性体粒子的粒径分布趋于均一,且分散均匀,并改善了PA…
Variasi pori dihasilkan dengan mengatur komposisi PEG yaitu 2%, 3%, 4%, 5%, 6%, 7%, 8%, dan 9%. Komposit berpori memiliki nilai porositas yang bertambah dengan kenaikan komposisi PEG. Komposit berpori memiliki porositas pada rentang 1% hingga 5% dan nilai permeabilitas komposit berpori yaitu (0.3-25)x10-15 m2. Potensi
首先通过共沉淀法制备Fe3O4磁粒子,然后采用水热法制备Fe3O4/Bi2O3复合粒子,并利用X-射线衍射、X-光电子能谱、扫描电子显微镜等进行表征。结果表明,复合粒子由Fe3O4和Bi2O3组成,形貌呈球形,具有三维多级结构。在可见光照射下,所制备的复合粒子对罗丹明B的降解率达95.2%。降解完成后,在外界磁场的作用下,Fe3O4/Bi2O3很快从体系中分离,可进行重复利用,实现循环催化。实验发现,Fe3O4/Bi2O3经5次循环催化后,对罗丹明B的降解率仍达93%以上。
Single crystal EPR and powder EPR of sulphto bridged Cu(II) complex were studied at X-band frequency. EPR of powder samples exhibit a single exchange narrowed resonance at 300 K and an orthorhombic spectrum at 77 K. Single crystal spectra show a single exchange -collapsed resonance line for all the orientations indica…
This study examined the influence of degradation of additive agents upon copper sulfate plating, i.e. polyethylene glycol (PEG) as a depressant, Janes green B (JGB) as a leveler, and bis(3-sulfopropyl) disulfide disodium salt (SPS) as a brightener. Trace analysis was conducted in a copper sulfate bath using high perfo…
We study two-dimensional soliton beams in disordered ferroelectrics. Super-cooling accelerates photorefractive response and changes steady-state anisotropy. Effects are attributed to the anomalous polarization response of polar-nano-regions.