Materials Literature
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This study aims to design, implement and model a small fixed bed reactor so that to perform a large number of consecutive Adsorption- Xidation cycles over Activated Carbon (AC) for water treatment. The evolution of the adsorption capacity of various activated carbons (commercial and issued from sewage sludges) is inve…
The availability of defect-free masks remains one of the key challenges for inserting extreme ultraviolet lithography (EUVL) into high volume manufacturing. yet link data is available for understanding native defects on real masks. In this paper, a full-field EUV mask is fabricated to investigate the printability of v…
A composite of the conjugate conductive polymer poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) and CdSe/ZnS quantum dots (QDs) is utilized for nanoimprinted lasers after drop-casting onto one-dimensional omnidirectional Bragg mirrors. Strong amplified spontaneous emission is observed at the resona…
This paper evaluates the efficiency of induction machines and measurement uncertainties arising from applying two editions of the International Electrotechnical Commission (IEC) testing standard in industry. Machine testing standards vary in methodology, procedure and required instrumentation accuracy, therefore leadi…
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
We proposed to study the potential of the HVPE (Hydride Vapour Phase Epitaxy) epitaxial tool for the shaping of semiconductor objects with controlled morphology at submicrometer scale. A 3-inch HVPE reactor was first designed and installed. The growth of GaAs (100) was calibrated and modeled thermodynamically and kine…
Das Hauptziel dieser Arbeit war die Realisierung eines Yb3+-dotierten einkristallinen Sesquioxid-Wellenleiterlasers, der mittels Pulsed Laser Deposition (PLD) hergestellt wurde. Zur Charakterisierung und Erprobung moglicher Materialsysteme wurden mit Ytterbium (Yb3+) sowie mit Erbium und Ytterbium (Er3+,Yb3+) dotierte…
It is shown that the frequency of the de Haas van Alphen effect in nonsuperconducting metals at very low temperatures is significantly corrected by a perturbative term which appears in the Landau equation sequel to an extension of the Pauli equation. The correction to the frequency of the de Haas van Alphen oscillatio…
Much work has already been done on how both the resist and line-edge roughness (LER) on the mask affect the final printed LER.What is poorly understood, however, is the extent to which system-level effects such as mask surface roughness, illumination conditions, and defocus couple to speckle at the image plane, and cu…
Neutron induced fission cross sections of 233U, 238U, 241Am, 243Am and 245Cm in the energy range between 500 keV and 20 MeV obtained at the n_TOF Neutron Time of Flight facility at CERN (Genève) are presented. Fission fragments had been detected by a gas counter with good discrimination between nuclear fission product…
Orientador: Prof. Dr. Luiz Pereira Ramos
In the polymeric title compound, [Cu(3)W(2)(CN)(16)(C(7)H(6)N(2))(6)(H(2)O)](n), the coordination geometry of the W(V) atom is eight-coordinate dodeca-hedral, where four CN groups of [W(CN)(8)] are bridged to Cu(II) ions, and the other four CN groups are not bridged. The coordination geometries of the Cu(II) ions are…
Les nano-antennes optiques sont de nouveaux éléments, généralement métalliques, permettant d améliorer les interactions électromagnétiques entre le rayonnement lumineux et un objet sub-longueur d onde. Ces dispositifs innovants, fonctionnant dans une gamme de longueur d onde correspondant au spectre visible et proche…
A axotomia periferica e uma lesao que resulta na perda de continuidade do nervo lesado. No sentido de repara-la, foram desenvolvidas diversas tecnicas, entre elas o autoenxerto e a tubulizacao com proteses de polietileno e biorreabsorviveis. Esta ultima tem a vantagem de ser confeccionada com a dimensao e forma deseja…
The available data on photoluminescence (PL) spectroscopy of single Si nanocrystals (Si-nc) is reviewed for two types of samples: (i) Regular matrices of Si pillars produced by electron-beam lithog ...
Calciumfluorid wird aufgrund seiner hervorragenden optischen Eigenschaften und seinem sehr hohen Schwellwert für laserverursachte Schäden als Linsenmaterial in Laserapplikationen und vor allem in der 193 nm-Mikrolithographie, zur Massenproduktion von Prozessoren, verwendet. Der Anspruch an die Homogenität des Brechung…
In the title compound, [Ag(NH(3))(2)](2)(C(8)H(3)NO(6))·H(2)O, the cations have an almost linear coordination geometry with two ammine ligands and inter-act with the water mol-ecules [Ag⋯O(water) = 2.725 (4) and 2.985 (4) Å]. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds, combined with weak (lone pair)⋯π [O⋯centroid…
This volume of IOP Conference Series: Materials Science and Engineering contains papers from the 11th Workshop of the European Microbeam Analysis Society (EMAS) on Modern Developments and Applications in Microbeam Analysis which took place from 10–14 May 2009 in the Hotel Faltom, Gdynia, Poland. The primary aim of thi…
Ein neues komplexes Silber(II)-Oxid – AgSO4 – wurde durch eine Methathesereaktion von Ag(SbF6)2 und K2SO4 in wasserfreier Flusssäure bei −80 °C oder durch Reaktion von AgF2 mit H2SO4 bei −35 °C erhalten. Die magnetischen Momente der rechteckig-planar koordinierten Ag2+-Ionen in AgSO4 sind über die O-O-Kanten der Sulfa…
We have investigated several classes of strong spin-orbit chalcogenides related to the (Pb,Sn)Te series studied in connection with the Dirac fermion physics in the 1980s. Our first-principle theoretical calculations suggest that ternary chalcogenides TlBiX$_2$ and TlSbX$_2$ (X=Te, Se, S) series harbor small bandgap to…