Materials Literature
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We have investigated the electronic states of the uranium monochalcogenide US, which is a typical ferromagnetic uranium compound, using soft x-ray photoemission spectroscopy (SX-PES). In early ultraviolet photoemission spectroscopy studies, two peak structures of the U 5f states were observed and have been interpreted…
Heart disease is one of the major causes of death in developing and industrialized countries. Myocardial infarction leads to remodeling of the left ventricle, which severely affects the pumping efficiency of the heart. In order to provide mechanical support to left ventricle the scaffold material should be elastic and…
We present results of ab-initio calculations of the electronic band structure, lattice dynamical properties, and elastic constants of LaOFeAs, the parent compound of the recently discovered superconducting iron-oxypnictide (LaO1-xFxFeAs). The total and partial electronic density of states (EDOS) of the undoped LaOFeAs…
We studied the rheological behavior of a molecular solution composed of $α$-cyclodextrin, water and 4-methylpyridine, a liquid known to undergo inverse melting, at different temperatures and concentrations. The system shows a marked non-Newtonian behavior, exhibiting the typical signature of shear thickening. Specific…
The realization that most diseases are preceded or accompanied by changes in the genetic and cellular level of an organism has increased with the need for imaging modalities, with the sensitivity and specificity, to quantitatively detect biomolecules at those levels. Specifically there has been a need for the developm…
Copper indium gallium sulphide thin films have been fabricated by chemical vapour deposition with metal halide precursors and S2Cl2 and H2 reactive gases. The CVD-grown CIGS thin films have been characterized by scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffraction analysis, and UV-VIS-NIR…
In the summer of 2008 when oil prices surged to US$150 a barrel, up from US$60 the year before, this caused plenty of anger from motorists at the pumps being forced to pay an amount that was way ab...
Surface plasmon propagation along a periodically corrugated metallic–air interface can be completely suppressed due to the formation of an equivalent dielectric metamaterial layer with a large real part of its effective refractive index. The effect can be explained by the transformation of the surface plasmon excitati…
The shield or shadow effect of large particles on bacteria undergoing irradiation from ultraviolet light in effluent of treated wastewater would greatly reduce the effectiveness of ultraviolet disinfection. The objective of this work is to evaluate the newly proposed method of applying a high pressure water jet (HPWJ)…
Bis(7-bromo-9,9-dialkylfluorenyl)diphenylsilanes with different alkyl chain lengths ( C n = 4 and 8) were synthesized in this work. Conventional 9,9-dialkyl-substituted polyfluorenes (PFs) were modified through copolymerization of the diphenylsilane-containing comonomers by the Suzuki coupling method to improve electr…
We show that, at the percolation threshold, two percolating AB clusters form in the diamond structure simultaneously instead of the usual one in the common site percolation problems. The structure of these two clusters and the related physical properties of semiconductor mixed crystals are discussed.
This paper offers a study of oxygen dissolution into a solid, and its consequences on the mechanical behaviour of the material. In fact, mechanical strains strongly influence the oxidation processes and may be, in some materials, responsible for cracking. To realize this study, mechanical considerations are introduced…
In industrial applications, different rubber types are often blended to fine-tune or optimize the property portfolio required for successful performance of articles. Considering the complexity of a rubber blend compound, wherein numerous additives are involved, vulcanization or cure mismatch often occurs as an outcome…
We use the finite-element method for simulating light transmission through a 2D-periodic array of rectangular apertures in a film of highly conductive material. We report results with a relative error of the transmissivity lower than 0.01%. This is an improvement of about one order of magnitude compared to previously…
Electron pairing is central to modern concepts of superconductivity, and provides a basis for the ubiquitous presence of h/2e in the theory and phenomenology. However, the lack of a consistent real-space picture of phonon-mediated pairing suggests that the pairing interpretation may be incomplete or even misleading. A…
Cette thèse a permis de développer un modèle analytique pour la prédiction de la température critique de poutrelle cellulaire fabriquée à base de profilés laminés en situation d'incendie. Ces résultats seront basés sur la mise au point d'un nouveau modèle analytique de poutrelle cellulaire isostatique soumise au feu.…
Capillary Absorption of Metal Nanodroplets by Single-Wall Carbon
Monodisperse FePt nanoparticles with controlled size and geometry have drawn great attention in the last decade for fundamental scientific studies and for their potential applications in advanced materials and devices such as ultra-high-density magnetic recording media, exchange-coupled nanocomposite magnets, biomedic…
Within the Generation IV International Forum (GIF), considerable efforts are devoted in Europe to research and development of the (Very) High Temperature Reactor system. This is one of the six reactor systems which GIF had selected and recommended for further development, in particular for industrial process heat appl…
The solubilities of 1,1′-(propane-1,3-diyl)-bis(3-methyl-1 H -imidazolium-1-yl) dihexafluorophosphate in acetone, 2-butanone, acetophenone, cyclohexanone, acetylacetone, and water were measured at temperatures from (288.55 to 335.25) K by a laser monitoring observation technique at atmospheric pressure. The experiment…