Materials Literature
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Compressional and shear wave velocities as well as unit-cell volumes across the α-ω transition of Zr have been measured up to 10.5 GPa at room temperature using ultrasonic interferometry in conjunction with synchrotron x radiation. In the pressure range of 5.0 to 6.2 GPa, a mixture of α and ω phase is clearly identifi…
To ensure economic operation of high voltage equipment, reliable condition evaluation concepts are essential. They enable long-term inspection strategies with regard to a maximized service life of each component. Condition based maintenance (CBM) is therefore desirable and it is already used more and more in practice.…
We report a general and versatile method for the encapsulation of electrically uncharged organic substance in polymeric capsules by using a layer-by-layer (LbL) approach. Electrical charge was induced on the surface of pyrene (uncharged organic substance) with an amphiphilic surfactant (sodium dodecyl sulfate, SDS) by…
Pseudogap and Superconducting Gap in Sm FeAs(O1-xFx) Superconductor from Photoemission Spectroscopy, Liu Hai-Yun, Jia Xiao-Wen, Zhang Wen-Tao, Zhao Lin, Meng Jian-Qiao, Liu Guo-Dong, Dong Xiao-Li, Wu Gang, Liu Rong-Hua, Chen Xian-Hui, Ren Zhi-An, Yi Wei, Che Guang-Can, Chen Gen-Fu, Wang Nan-Lin, Wang Gui-Ling, Zhou Yo…
A method for the determination and quantification of collagen types I-V in rat tissues has been developed. This method is based on collagen fragmentation by cyanogen bromide followed by trypsin digestion. After that, HPLC-MS/MS (HPLC coupled to an IT mass spectrometer) analyses of the resulting peptide mixtures (pepti…
We report here on a simple but precise thermoelectric power measurement setup that can be adapted for different environments. This setup has been extensively used for cryogen-free environment to measure a variety of samples. It is made simple to load and hold the sample between two copper blocks by a spring-shaft arra…
Electron-induced electron yields of high-resistivity high-yield materials - ceramic polycrystalline aluminum oxide and polymer polyimide (Kapton HN) - were made by using a low-fluence pulsed incident electron beam and charge neutralization electron source to minimize charge accumulation. Large changes in the energy-de…
We describe a pump-probe optical technique, time-domain probe-beam deflection, that enables measurements of the coefficient of thermal expansion (CTE) with micron-scale spatial resolution. Our quantitative model for the beam deflection includes contributions from thermal expansion of thin films deposited on a substrat…
The synthesis of brush-like carbon nanotubes (CNTs), the nanoprocessing, and the application to twisted yarns for CNTs are reviewed. The large-scale synthesis has been established, where 170-µm-height brush-like CNTs are grown on a 6-in. Si wafer every three minutes. 7-mm-long brush-like CNTs have also been achieved b…
In this paper, the scientific basics for the production of nanostructured titanium using the technology of severe plastic deformation to manufacture medical implants for their wide use in trauma treatment, orthopaedics, and dentistry are presented. Special attention is paid to the physics and mechanics of methods of s…
Abstract In the present study the functional fatigue in the commercial SMP Veriflex® which is associated with repeating up to 20 programming/1‐WE cycles has been examined. The material is characterized by a glass temperature T g of 67 °C, above which it looses all its strength. During tensile testing at 21 °C ( T <…
Silicon nitride is one of the major structural ceramics that has been developed following many years of intensive research. It possesses high flexural strength, high fracture resistance, good creep resistance, high hardness and excellent wear resistance. These properties arise from the processing of the ceramic by liq…
The sulfide intermediate, ('2-[[[3-Methyl-4-(2,2,2-trifluoroethoxy)-2pyridinyl] methyl] thio]-lH-benzimidazole) (3), required for the industrial synthesis of the anti-ulcer drug Lansoprazole, has been prepared in excellent yields by microwave irradiation of a dry mixture of 2-chloromethyl-3-methyl-4-(2,2,2trifluoroeth…
Soils in humid Asia exhibit relatively incipient mineralogical characteristics because of the dominant steep slopes, crust movement and volcanic activity compared with many tropical soils on stable plains. In the present study, the relationship between the mineralogical and chemical properties of these soils was inves…
Oxygen-free conversion of methane to ethylene was investigated in a two-stage plasma-followed-by-catalyst (PFC) reactor. In the absence of catalyst, pulsed spark discharges and pulsed corona discharges were compared for methane conversion. The results showed that methane was mainly converted to acetylene, but pulsed s…
It is known from the theory of metal cutting that an examination of machining chips provides the cheapest and the most effective way of understanding the machining characteristics of a material. The review of literature on machining of DRACs reveals that these aspects have been given relatively little attention during…
We examined bulklike Heusler nanocrystals using real-space pseudopotentials constructed within density functional theory. The nanocrystals were made of various compositions of Ni–Mn–Ga in the size range from 15 up to 169 atoms. Among these compositions, the closest to the stoichiometric Ni2MnGa were found to be the mo…
Bayerite sol is spun onto single crystal Si substrate, after synthesis and optimization, to obtain films of thickness ~ 0.2 μm. The deposited films are room temperature dried and then heated up to a temperature of 350°C in order to obtain Al 2 O 3 . Surface and structural changes, during heating, are observed with opt…
Self-assembly of peptides has gathered particular attentions since it may provide unique properties relying on highly specific molecular recognition and structural organization. Peptides assemble into complex nanostructures through highly specific biomolecular interactions such as hydrogen bonding and hydrophobic inte…
A simple model of the magnetoelectric (ME) effect in cylindrical layered composites is presented. The cylinder is replaced by the effective layered plate structure with effective length, L eff , thickness t and height h . In the axial coupling mode, the effective magnetic field acts along the length direction ( L eff…