Materials Literature
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Remarkably little is known about metal-to-ligand charge transfer (MLCT) excited-state relaxation pathways for the ruthenium polypyridyl compounds commonly utilized in dye-sensitized solar cells. Herein, we report variable-temperature photoluminescence studies of compounds of the general type cis-Ru(LL)(2)(X)(2), where…
The H/D exchange process in the imidazolium-based room temperature ionic liquids (RTILs) 1-decyl-3-methyl-imidazolium bromide- and chloride ([C₁₀mim][Br] and [C₁₀mim][Cl]) in D₂O solutions of various concentrations was studied applying ¹H, ¹³C NMR, and Raman spectroscopy. The time dependencies of integral intensities…
A series of surface-modified expanded poly(tetrafluoroethylene) membranes showed varied levels of in vitro macrophage proinflammatory response. Membranes containing a mixture of phosphate and hydroxyl groups (as determined by X-ray photoelectron spectroscopy analysis) stimulate greater macrophage activation than sampl…
Self-assembly of amyloid nanofiber is associated with functional and pathological processes such as in neurodegenerative diseases. Despite intensive studies, stochastic nature of the process has made it difficult to elucidate molecular mechanisms for the key amyloid nucleation. Here, we investigated the amyloid nuclea…
Este trabalho apresenta um metodo para a caracterizacao das lesoes de pele, a partir das caracteristicas da regra ABCD (assimetria, borda, cor e diâmetro) e analise de textura. As caracteristicas ABCD sao obtidas de acordo com o dermatologista e a textura das imagens e definida pela sua dimensao fractal, por meio do m…
Over the past decade, there has been much controversy regarding the microscopic mechanism by which the π-electron-rich carbon nanomaterials such as graphene and carbon nanotubes can be dispersed in ionic liquids. Through a combination of a quantum mechanical calculation on the level of density functional theory, an ex…
We report highly bright and efficient red, green, and blue quantum dot (QD) based light-emitting diodes (QLEDs) by using an inverted device structure with solution-processed ZnO nanoparticles as the electron injection layer and by optimizing energy levels with the organic hole transport layer.
Hot forging dies experience during service excessive cyclic thermo-mechanical, tribological as well as chemical loads. These loads occur in a repeated manner and may cause premature fatigue failure of the forming tools and thus lead to an interruption of the production process. Die failures due to fatigue crack initia…
Studied the mechanism and kinetics of tungsten oxide recovery blue hydrogen and tungsten powder with options for unit surface for production of high quality tungsten wire.
The problem of determining the elastoplastic properties of a prismatic bar from the given relation from experiment between torsional moment MT and angle of twist per unit of rod’s length θ is investigated as inverse problem. Proposed method of solution of inverse problem is based on solution of some sequences of direc…
A novel kind of porous SiO2@TiO2 microspheres have been synthesized by a convenient hydrothermal method with SiO2 spheres as the core strcuture, which exhibits an enhanced degradation rate towards gaseous benzene than that of P25.
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Thin film solar cells based on nontoxic and earth-abundant elements are necessary for future-generation photovoltaic devices. Tin monosulfide is a promising candidate that can be used as an absorber material in thin film photovoltaics. In this paper, we introduce the direct synthesis of stoichiometric and single-phase…
La alumina nanoporosa autoordenada (ANA) es un material de gran interes en nanotecnologia debido a sus propiedades fisicas. En particular, la disposicion ordenada de los poros en una red triangular da al material propiedades de cristal fotonico. Esta tesis investiga las propiedades fotonicas de la ANA y las tecnologia…
Recently, the crystallographic control technology in the aluminum wire drawing process has been a key technology in the aluminum industries, which produces high-strength wires for the electric, automotive and aircraft parts. This newly proposed “process metallurgy” computational technology in the industrial forming pr…
Nowadays, composite materials are replacing metallic ones thanks to their excellent mechanical performances and reduced weight. However, many difficulties are encountered during composite forming processes. In fact, autoclave curing process is too expensive and limits the part size to the autoclave dimensions. Out-Of-…
Structural and mechanical properties of silica aerogels are studied using a flexible coarse-grained model and a variety of simulation techniques. The model, introduced in a previous study (J. Phys. Chem. C 2007, 111, 15792−15802), consists of spherical “primary” gel particles that interact through weak nonbonded force…
근이영양증은 유전자 결함에 의해 디스트로핀 단백질의 부재로 발생하는 심각한 근육퇴행성 질병이다. 근이영양증의 잠재적 치료법은 모르폴린 올리고머(steric-block Morpholine oligomers)를 이용하여, 결함이 나타난 엑손(Exon)을 건너뛰게 하여전사해독틀을 회복시키고, 디스트로핀 단백질을 재합성하게 하는 방법이다. 하지만 Morpholinos는 세포막을 뚫고 세포내로 들어가기 매우 어려워, Morpholinos가 세포 내로의 진입을 가능하게 하는 합성폴리머(dendrimer scaffold)와 결합한 새로운 합성폴리머를 개발하였고, 이것을 Vivo…
In this paper we study a model describing a copolymer in a micro-emulsion. The copolymer consists of a random concatenation of hydrophobic and hydrophilic monomers, the micro-emulsion consists of large blocks of oil and water arranged in a percolation-type fashion. The interaction Hamiltonian assigns energy –a to hydr…
The demand for optically transparent UV formulations with a long life cycle is increasing due to the use of new high performance materials. These high performance materials are utilized in electronics, solar cells, automotive, communication and engineering applications. Demands on these materials are quite high and in…