Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Conformational transitions of (bio)macromolecules in aqueous mixtures are intimately linked to local concentration fluctuations of different solvent components. Though computer simulations are ideally suited to investigate such phenomena, in conventional setups the excess of one cosolvent close to the solute leads to…
We report a facile and robust synthesis of Cd x Zn 1– x S graded shells on CdSe nanoparticles that are prepared by interface alloying between CdS and ZnS shells at elevated temperatures. Alloying provides systematic control over the electronic structure and enables switching between Type-I and quasi -Type-II configura…
Boron nitride (BN) and carbon are chemical analogues of each other and share similar structures such as one-dimensional nanotubes, two-dimensional nanosheets characterized by sp(2) bonding, and three-dimensional diamond structures characterized by sp(3) bonding. However, unlike carbon which can be metallic in one, two…
A self-powered electrochromic smart window with tunable transmittance driven by dye-sensitized solar cells has been designed, which also acts as a photocharged electrochromic supercapacitor with high areal capacitance and reversible color changes.
Graphene is very popular in recent years, due to its unique electrical, thermal, mechanical, optical and electrochemical properties. With these useful advantages, graphene has been used as a substance to incorporate various kinds of functional materials. Among them, graphene-based polyaniline (PANI) nanocomposites hav…
In the ring-opening polymerization (ROP) of cyclic esters and carbonates, hydrogen-bonding organocatalysis offers an interesting alternative to metal-based and enzymatic catalysis to access biocompatible and biodegradable polymers. The design of catalysts, strategies of activation and mechanistic elucidations are high…
We perform density functional theory calculations on a recently synthesized metal-organic framework (MOF) with a perovskite-like topology ABX3, i.e., [CH3CH2NH3]Mn(HCOO)3, and predict a multiferroic behavior, i.e., a coexistence of ferroelectricity and ferromagnetism. A peculiar canted ordering of the organic A-cation…
The Ni3S2 nanoparticles with the diameters ranging from 10 to 80 nm are grown on the backbone of conductive multiwalled carbon nanotubes (MWCNTs) using a glucose-assisted hydrothermal method. It is found that the Ni3S2 nanoparticles deposited on MWCNTs disassemble into smaller components after the composite electrode…
Metamaterials are rationally designed man-made structures composed of functional building blocks that are densely packed into an effective (crystalline) material. While metamaterials are mostly associated with negative refractive indices and invisibility cloaking in electromagnetism or optics, the deceptively simple m…
A state of matter in which molecules show a long-range orientational order and no positional order is called a nematic liquid crystal. The best known and most widely used (for example, in modern displays) is the uniaxial nematic, with the rod-like molecules aligned along a single axis, called the director. When the mo…
77.140.01
La synthèse de macroalcoxyamines hydrosolubles à partir d’acide méthacrylique et d’un faible pourcentage de styrène sulfonate de sodium a été étudiée en solution aqueuse. Ces macroalcoxyamines ont été utilisées comme macroamorceurs pour la polymérisation en émulsion sanstensioactif du méthacrylate de méthyle et du mét…
L'intégrase (IN) est une protéine clé du cycle de réplication des rétrovirus et constitue une cible thérapeutique importante. Nous avons découvert par cristallographie aux rayons X, une nouvelle possibilité d'assemblage dimérique du domaine central catalytique de l'intégrase du Rous associated virus type I (RAV-1 IN).…
La fissuration à chaud de solidification qui est l'un des problèmes majeurs rencontrés dans le cadre du soudage pourrait être préjudiciable à la tenue en service de structures mécano-soudées. Ce phénomène correspond à la formation de fissures en fin de solidification sous l'effet des déformations induites par les cont…
Après la découverte des rayonnements ionisants et leurs effets chimiques, il était important d’étudier et de comprendre les mécanismes de formations des radicaux libres et des produits moléculaires caractérisés par leurs courtes durées de vie. Ceci a encouragé les groupes de recherches à développer leurs outils pour q…
AC magnetic susceptibility measurement is a fundamental characterization tool in materials science, to study the dynamic magnetic response of magnetic materials and superconductors. An AC multi-harmonic magnetometer is available at the LAMPS laboratory of the LNF-INFN. The magnetometer allows performing experiments wi…
The aim of this study is to investigate the mechanisms of interaction between the components in adhesive compositions based on chloroprene rubber (CR) during the formation of an adhesive joint. Investigations are made on the influence of the phenol-formaldehyde resin amount, of the rubber compounds processing regime,…
Use of recycled fiber material for the production of paper and paperboard has a significant share in solving problems related to environmental protection and conservation of energy resources. One of the most important processes for the paper recycling with printing press is a deinking. Perspective method for deinking…
O depósito de níquel laterítico de Niquelândia, GO, Brasil, é considerado um dos mais importantes depósitos desta natureza no país, em razão de sua dimensão, seus teores ligeiramente mais elevados e associação com argilominerais. Desde a década de 70, autores como Trescases e Santos já estudavam seus argilominerais de…
O objetivo do presente estudo é a procura de evidências da presença de modos GAM nas descargas do tokamak TCABR, em distintos regimes de operação. As descargas selecionadas foram classicadas segundo a maneira de obter a melhora no connamento do plasma. Nós zemos essa procura nas descargas ôhmicas com incremento espont…