Materials Literature
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No presente trabalho, a transferência de calor por convecção forçada foi calculada para o escoamento laminar fluidodinamicamente desenvolvido e termicamente em desenvolvimento de fluidos Newtonianos com perfil de temperatura de entrada uniforme no interior de dutos de setores circulares submetidos a condições de conto…
The main purpose of the current study was to investigate the effect of the hydrothermal ageing on the mechanical and thermomechanical properties of glass fiber reinforced polymers (GFRP) and of flax fiber reinforced polymers. Moreover, the behavior of the two different composite systems is compared. Glass fiber reinfo…
With the rapid implementation of ultra-high-voltage direct current (UHVDC)-voltage beyond 800 kV-transmission in China, engineers are paying increased attention to the electrical environment of the lines, with major focus on electrical phenomena such as ground electric field, ion current density, magnetic field, audib…
Nano wheel gear is an integral part of the nano electromechanical system (NEMS). The nano wheel gear, with the advantages of ultra-high speed, wear resistance, long life and easy assembly, has been a hot research topic in many fields in recent years. In this paper, we proposed a new nano wheel gear of ultrahigh speed,…
Este trabalho visa o estudo de distribuição de tensões em placas com múltiplos orifícios circulares, em situações que a obtenção de solução analítica ou experimental é inviável devido à complexidade e custo da mesma. Convergência de malhas e de pontos de Gauss não está incluída nesse estudo. Serão feitas diversas anál…
International audience
The La3+modified lead free Bi0.5Na0.5TiO3-BaTiO3/BNBTO solid solutions near morphotropic phase boundary [((Bi0.94La0.06)0.5Na0.5)0.94Ba0.06TiO3/BLNBTO and ((Bi0.5Na0.5)0.94Ba0.06)0.91La0.06TiO3/BNBLTO] have been prepared by the high temperature solid state reaction method. The crystal structure of BLNBTO transfers fro…
NiTi alloys possess magnificent superelastic, shape memory, high strength and biocompatible properties. For improving mechanical properties, foremost, superelasticity behavior, heat treatment process is carried out. In this paper, two different heat treatment methods were undertaken: (1) solid solution, and (2) aging.…
Colloidal all-inorganic silicon carbide (SiC) nanocrystals (NCs) have been introduced into Metal-Insulator-Semiconductor (MIS) structures with HfOxgate dielectric layers. The fabricated MIS structures were characterized by means of stress-and-sense measurements in terms of device capacitance, flat-band voltage shift,…
pH-sensitive, quantum dots (QDs) based sensor films were developed for point-of-care diagnosis and monitoring of plasma sodium and potassium concentrations. MPA capped CdTe QDs are synthesized using the hydrothermal process. The emission wavelength of the synthesized QDs is programmed at 635 nm. Characterization of QD…
Chemical conjugation of a biomolecule, such as a peptide or a nucleic acid, with a functional molecule, for example a drug or a fluorophore, yields a bioconjugate, a polyfunctional entity that combines the properties of its components to elicit a biological effect. This kind of assemblies have found many successful ap…
This paper explores the light-trapping shape optimization to maximize the organic photovoltaic cells (OPV) conversion efficiency (PCE). The optimization aims to find the best light-trapping profile of the hole transfer layer that can absorb more light and minimize reflection. The optimization is done using Genetic Alg…
This work presents the impact and interaction of silver nanoparticles (Ag NPs) on chemical vapor deposited (CVD) mono-layer graphene-Si junctions. The vertical and lateral/surface current transport properties for different Si-substrate samples (varying top Si surface treatment) are studied using conductive mode Atomic…
International audience
The development of integrated circuits (ICs) has seen exponential growth in performance over the last couple of decades and has pushed the boundaries for how we use our electronics in our daily lives. The scaling of ICs, and therefore also the performance development, is now starting to slow down when the physical des…
We report the characterization of GaAsP nanowires in view of their photovoltaic applications. The nanowires containing a p-i-n junction were elaborated by molecular beam epitaxy using Be and Si as p- and n- doping impurities. Electron beam induced current microscopy was used to analyze the electrical activity of singl…
This research objective of this EELDRD study was to learn to electrodeposit Pt Au alloys with independently controlled composition and grain size. What was accomplished was the capability to electrodeposit PtAu alloys with controlled composition and a nanocrysolline grain size. Nanocrystalline metals as a class and, s…
This article consists only of a collection of slides from the author's conference presentation.
obtention du diplôme de Philosophiæ Doctor a été dûment acceptée par le jury d'examen constitué de :
Insulator is one of the important equipment to support electrical power delivery which flow through the transmission line. Considering its very important role, the selection of insulators must be certainly based on deep analysis so that the insulator we choose works properly. There are several standards that can be us…