Materials Literature
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A thin water film evaporating from a cleaved mica substrate undergoes a first-order phase transition between two values of film thickness. During evaporation, the interface between the two phases develops a fingering instability similar to that observed in the Saffman–Taylor problem. The dynamics of the droplet interf…
High quality ZnO crystals with the sharp band-edge excitonic emission and very weak green emission were implanted by nitrogen ions. An additional red emission band was observed in the as-implanted ZnO crystal and investigated as a function of temperature. By employing the underdamped multimode Brownian oscillator mode…
Short range order model is commonly used to explain the charge transport property of disordered organic semiconductors. However, its validity is not yet studied. In this paper, the hole and electron mobilities of a bipolar material, N , N ′-dicarbazolyl-1,4-dimethene-benzene (DCB), were measured through time of flight…
The protein chorismate mutase MtCM from Mycobacterium tuberculosis catalyzes one of the few pericyclic reactions known in biology: the transformation of chorismate to prephenate. Chorismate mutases have been widely studied experimentally and computationally to elucidate the transition state of the enzyme catalyzed rea…
We investigate a four-impurity Anderson model where localized orbitals are located at vertices of a regular tetrahedron and find a novel fixed point in addition to the ordinary Fermi liquid phase. That is characterized by unscreened scalar chirality of a tetrahedron. In this phase, parafermions emerge in the excitatio…
The temperature dependence of coercivity was investigated in CrO2 and La0.7Sr0.3MnO3 films with and without uniaxial magnetic anisotropy. When the magnetic field was applied along the uniaxial magnetic anisotropy axis, the coercivities of the CrO2 and La0.7Sr0.3MnO3 films showed remarkable enhancement behaviors near f…
We describe the results obtained from a comprehensive study of flat diffusers during which the level of pressure pulsations in their flow paths, the static and dynamic loads exerted on the diffuser walls, and the acoustic radiation levels were determined at different aperture angles of these walls.
In this study, we synthesized monodispersed polystyrene (PS)-silica core-shell spheres with various shell thicknesses for the fabrication of photonic crystals. The shell thickness of the spheres was controlled by various additions of tetraethyl orthosilicate during the shell growth process. The shrinkage ratio of the…
Abstract Anovel nanocomposite adsorbent, Silica aerogel activated carbon (SA‐AC) has been prepared for the purpose of removing lead ions from aqueous solution in batch process. The nanocomposite was characterized by Fourier transform infrared spectra (FTIR) and scanning electron microscope (SEM). In the present invest…
We report on a density functional theory based study of a novel structural rotation of single-crystal aluminum (Al) under uniaxial compression. It was found that under strains either along the 〈112〉 or the 〈111〉 direction, beyond a critical stress of about 13 GPa, the Al crystal can rotate through shear in the Shockle…
Soils with strong texture-contrast between A and B horizons dominate the agricultural zones of the west and south of Australia. The B horizon is often sodic and of much finer texture than the A (or E) horizon above, and can have a bulk density as high as 2 g cm–3. When dry, these B horizons may severely impede the roo…
The etching characteristics of the AgInSbTe phase change film as a new thermal lithography material were studied. The amorphous AgInSbTe film was deposited by using radio frequency magnetron sputtering method at room temperature, and then crystallized by vacuum-annealing. Using sodium hydroxide aqueous solution as etc…
基于密度泛函理论, 采用总能量平面波赝势方法, 设计了La 0.75 Mg 0.25 Ni 3.5- x Co x ( x =0、0.25、0.5、0.75)系列合金, 并研究了其晶体及电子结构. 计算结果显示随着Co含量的增加, La原子上的电荷转移先增大后保持不变, 在Co含量为0.5时达到最大; 费米能级处的态密度值先增加后稍减小, Co含量在0.5时达到最大. 利用悬浮感应熔炼法制备了该系列合金La 0.75 Mg 0.25 Ni 3.5- x Co x ( x =0、0.3、0.5、0.7). 对熔炼所得合金进行了结构和性能表征, XRD结果显示, 随着Co含量的增加, 合金的主相均为Ce 2 Ni 7 型AB 3.5…
Optimization of process parameters in polymer extrusion is an important task to reduce manufacturing cost. To determine the optimum values of the process parameters, it is essential to find their influence on the strength of polymer breathable thin film. The significance of six important process parameters namely, ext…
The transmission through ultra-thin metal films is noticeable and thus limits their potential for the formation of lithographic masks. By sub-wavelength patterning of a metal film with a post structure, a resonant metamaterial is formed, which can effectively suppress the transmission. Measurements as well as calculat…
PURPOSES : This study deals with the working life of polymer concrete, which is typically used as a repair or overlay material for portland cement concrete pavements. METHODS : In the scope of this study, laboratory testing was conducted on fresh MMA modified UP polymer concrete, which uses an MMA monomer for viscosit…
La-substituted strontium hexaferrite particles Sr$_{1 - x}$La$_{x}$Fe$_{12}O_{19}$ $(x = 0 \div 0.2)$ were prepared by using sol-gel method and subsequent calcination at temperatures ranging from 750\rc{}C to 1050\rc{}C for 2h in air. The effects of the initial La concentration and the calcination temperature on the s…
Doppelschalige “weiche” Kohlenstoffkugeln wurden synthetisiert, um Schwefel in einem Nanokomposit mit großer Oberfläche und Porosität einzuschließen, wie X. W. Lou et al. in der Zuschrift auf S. 9730 ff. beschreiben. Die höhere Belastbarkeit des Kohlenstoff-Schwefel-Nanokomposits kann mit einem effizienten Elektronen-…
In this study, some considerations have been suggested in developing on-site techniques to evaluate the sensitization of stainless steels. Electrochemical potentiokinetic reactivation (EPR) technique is known to be a candidate tool for field applications since it enables quantitative assessment in reasonable test time…
Mit und ohne H2O: Zwei ungewöhnliche Magnete aus [Mo(CN)7]4−-Baueinheiten und MnII-Brücken bilden in topologischer Hinsicht unterschiedliche 3D-Gerüste. Die Umwandlung des einen Gerüsts in das andere wird durch Dehydratisierung ausgelöst und verläuft als Einkristall-zu-Einkristall-Prozess (siehe Bild; Mn dunkelrot, Mo…