Materials Literature
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Semiotics is the science of studying the sign systems and, in fact, an interpretive process for understanding the hidden truth behind the signs, mysteries, and signs and cultural symbols. In addition, semiotics tells us that structures can be meaningful. The sign system in the Islamic Republic of Iran is very importan…
The present study relates to the problem of long-term disposal of nuclear waste. In France, with the Cigéo project, it is envisaged to store high and intermediate level long lived radioactive waste at a depth of 500m inside a carbon steel (API 5L X65) casing in a deep geological disposal, drilled in a very stiff clay…
In this study, we have developed cross-linkable conductive polymer for solution process of OLED. The Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) was cross-linked using Furfuryl Methacrylate (FM) and 2-hydroxyethyl acrylate (HEA). Synthesized cross-linked PEDOT:P(SS-HEA) and PEDOT:P(SS-FM) have…
We have studied hybrid passivation coating materials and methods that can achieve good surface hardness using organic and inorganic materials. The passivation layers formed using synthesized passivation agent based on urethane acrylate resins. High-hardness hybrid passivation films were prepared by adding Al2O3 nanopa…
Alloys with good toughness and elevated temperature properties like A201 are expensive and can be more difficult to process. This results in the use of heavier but less expensive alternatives in many applications where toughness is of concern, such as steels. Common alloys such as A356 and E357 are relatively cheap an…
Cette etude s'interesse au vieillissement thermique d'elastomeres synthetiques, amorphes, vulcanises et additionnes de charges (noir de carbone). Sur la base d'une meme formulation materiau, on etudie plus particulierement, l'impact du procede initial (conditions de vulcanisation), les consequences de l'evolution phys…
This PhD thesis is part of a larger European ITN project (Photo4Future) dealing with improvement of the use of sun light for making valuable products through new heterogeneous catalytic photochemical processes. In this context, the synthesis of nanophotocatalysts is essential since their characteristics must be contro…
Under irradiation, flows of particles (neutrons, ions, electrons) induce ponctual defects (vacancies and interstitials) which generate extended defects (dislocation loops, cavities) that are responsible for materials weakening. Aluminum is a low mass material with a low displacement energy (Ed=16-19 eV) which allows t…
Ce travail de these porte sur l’etude d’electrolytes pour utilisation dans des systemes de stockage energetiques tels que les batteries lithium-ions. Les materiaux specifiques a cette etude sont des liquides ioniques a base de pyrrolidinium avec le fluorosulfonylimide (FSI) en tant que contre-ion, le tout dope au lith…
Los oxidos de manganeso han despertado un especial interes debido a la elevada flexibilidad estructural que presentan y por su facilidad para estabilizar distintos estados de oxidacion, en diferentes entornos de coordinacion. Estas caracteristicas, junto con su elevada abundancia, bajo coste y baja toxicidad, hacen qu…
National Science Foundation Institute of Functional Nanomaterials, Puerto Rico NSF-EPSCoR IFN (EPS-1002410)
The influence of graphene on the assembly of intercalated material is studied using low-temperature scanning tunneling microscopy. Intercalation of Pt under monolayer graphene on Pt(111) induces a substrate reconstruction that is qualitatively different from the lattice rearrangement induced by metal deposition on Pt(…
Design and modification of the interfaces, always a critical issue for semiconductor devices, has become the primary tool to harness the full potential of halide perovskite (HaP)-based ones. In particular the outstanding improvements in HaP solar cell performance and stability can be primarily ascribed to a careful ch…
Propriétés mécaniques et de structure de films formés par évaporation de suspensions colloïdales Le séchage d’une suspension colloïdale produit une couche solide plus ou moins poreuse. Ce processus intervient dans de nombreuses applications, telles que le procédé sol-gel ou la fabrication de laques et de peintures. Du…
Respiratory protective equipment is recommended as one method to diminish exposure to airborne pollutants, including volatile organic compounds (VOCs). Activated carbon fiber (ACF) has a potential use as an alternative adsorbent in respirators for VOCs. The advantages of ACF as an alternative absorbent include larger…
The main objective of this work was to study the structure-properties relationships of biopolymerblends based on poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and polybutylene succinate (PBS). The work was devised into three parts. The first part was devoted to the study of the properties of PHBV/PBS blends pre…
У статті проаналізовано фізико-механічні властивості та можливість застосування нового композиційного матеріалу - самоущільнювального полімерцементного фібробетону в технологіях ремонтно-відновлювальних робіт на гідротехнічних спорудах водогосподарсько-меліоративного комплексу. Досліджено та проаналізовано основні чин…
The demonstration of a qubit system in silicon, with efficient optical control and readout of robust electronic and nuclear spin states, would change the current dominant industrial trends in quantum devices. Singly ionized deep double donors in silicon (Si:Se+) have shown promise as examples of such industry-changing…
Oysters show a two-phase life cycle: pelagic larvae adhere before metamorphosis into benthic life. Larval adhesion occurs at the pediveliger stage by secretion of a bioadhesive produced by a specialized organ: the foot. The oyster Crassostrea gigas is an organism of economic and ecological importance, and a model for…
Ce travail vise a evaluer les performances de materiaux a base de silice et a rationaliser leur synthese en fonction des proprietes d’adsorption recherchees (capacite et/ou selectivite) en combinant des approches experimentales et la modelisation de dynamique moleculaire. Ces materiaux devaient idealement presenter un…