Materials Literature
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Since its first use to solve the structure of sodium chloride in 1915 X-ray crystallography has developed significantly to become the premier technique for obtaining 3D structural information of small molecules and macromolecules alike. As the technique continues to develop and focus its attention on weak diffraction…
We developed a motion assistance apparatus which can be used for neuro-rehabilitation of patients and for the promotion of exercise for the elderly. This apparatus assists only the ankle joints of the equipped person according to the posture of him/her while walking, getting up, sitting, and standing. To confirm the e…
To evaluate the effect of non-uniform deformation on the elastic and viscous strain during unloading of the polymeric material, strain distribution after loading, unloading were measured by digital image correlation method. Local viscous strain was obtained by removing the elastic strain from total strain cased during…
In development of high strength magnesium alloys with large elongation for medium plate, effect of rolling process and heat treatment of magnesium alloy on mechanical properties of rolled Mg-Al-Mn-Ca (AMX alloy) and Mg-Al-Zn-Ca (AZX alloy) alloys with thickness of 3 mm were investigated used by cast materials. The cas…
Sharp memory alloy (SMA) is one of the functional material which shows the shape memory effect and superelasticities. Since the shape recovery temperature of Ti-Ni system SMA is below at 373K, this alloy is expected the element of heat-engine driven by low-temperature thermal of energy. Previous SMA heat-engines have…
色素増感太陽電池（DSSC）を構成するメゾスコピック酸化チタンナノ結晶（nc-TiO2）電極の優れた光導電性について論じる。また，ポリアニリン誘導体（エメラルディン型フェニルキャップアニリンテトラマー：EPAT）およびtert-ブチルピリジン（TBP）を含む非腐食性電解質を増感色素Z907からなるnc-TiO2太陽電池に導入して良好な光電変換効率が得られることを述べる。DFT計算による分子軌道の解析から，電解質内でのEPATの自己組織化が示唆されている。とくに，nc-TiO2電極内に形成した水素結合からなる二量化EPAT-H-TBP種：（EPAT-H-TBP）2が，Z907/EPAT/TBP界面を基盤とする分子構造太陽電池において…
Dynamic surface tension is one of the most important physical properties for interfacial phenomena of many applications. A proposal on the measurement method of dynamic surface tension was found in previous research, which uses local deformations in the droplet surface. To clarify the local flow in the tiny droplet, w…
In this paper, design study and evaluation related with safety design criteria (SDC) and safety design guideline (SDG) on the balance of plant (BOP) of the demonstration JSFR including fuel handling system, power supply system, component cooling water system, building arrangement are reported. For the fuel handling sy…
Magnesium alloys often exhibit low ductility and poor strength as a result of limited slip in their hexagonal close-packed structure. Recently, flame-resistance Mg alloys developed but it was well known that the plastic deformation of flame-resistance Mg alloy requires many working cycle and high processing temperatur…
Significant development of coal fired power plant has been made in China in the past decades. Over 50 units of 1000MW ultra-supercritical (USC) plant have been constructed with designed net efficiency as high as 45%. Precious and critical knowledge for design, construction and operation has been accumulated from these…
In this study, damage development of plain-woven laminates with laminate misalignment is analyzed using a homogenization theory. For this, a homogenization theory for plain-woven laminates with laminate misalignment is described. Hoffman's low is then introduced into the theory as a criterion for fracture of fiber bun…
Much of oil filled (OF) cable has been used for a long time for 66 to 500kV extra high voltage cable. Sometimes we can see extremely degraded oil (several tens % of tanδ, for example) in joint box etc, but even with that sever situation, an event such as thermal breakdown has not taken place up to the present in actua…
Effects of vacuum environment on fatigue crack propagation properties in freestanding copper nano-films have been investigated. Fatigue crack propagation experiments were conducted in both air and vacuum environments. In situ field emission scanning electron microscope (FESEM) observations of fatigue crack propagation…
Unusual emergence of magnetization induced by vacancy-strain interaction in non-magnetic ferroelectric PbTiO_3 is investigated using first-principle calculations. Atomic-scale ferromagnetism is observed at an oxygen vacancy under tensile strain, while under compressive strain it exhibits anti-ferromagnetism. These eme…
Complex micro- and nano-structure can be formed simply by generating complex electric fields holographically with a spatial light modulator (SLM) by liquid crystal on silicon (LCOS) technology. Processing patterns for micro-patterns to be desired are commonly generated by computer generated hologram (CGH). In this stu…
Considering long-term application of the nanocrystalline metals in space, the influence of the nano-scale void is investigated via molecular dynamics (MD). The deformation of nanocrystalline metals involves not only intragranular but also grain boundary (GB) deformation, and it is one of the important factors to expla…
The aim of this study was to assess an impact of hexavalent chromium in the conditions of intragastric administration in the form of K2Cr2O7 on the process of lipid peroxidation (LPO) and activities of enzymes of antioxidant system (superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase) in the…
Polysilsesquioxane (PSQ) is a typical organic-inorganic hybrid material with various characteristics which depend on the organic functional groups.The appropriate organic functional groups can immobilize the metal nanoparticles in PSQ thin films.In order to disperse the metal nanoparticles uniformly in the PSQ thin fi…
NiO nanoparticle solution film, which included NiO nanoparticles, ethylene glycol, and polyvinylpyrrolidone, was reduced to Ni to form Ni microstructures using femtosecond laser induced reduction. When the femtosecond laser pulses were focused onto the film and scanned, Ni microstructures were formed. The line width w…
The hypoelastic-based plasticity as well as the infinitesimal hyperelastic-based plasticity is adopted most widely to the elastoplastic deformation analyses of solids and structures at present. However, the additive decompositions of the strain rate and the continuum spin into elastic and plastic parts have been adopt…