Visualitzant FCA_Articles per data de publicació
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Mechanical relaxations and diffusive changes in linear low density polyethylene (LLDPE) films subject to induced stretching
Wiley (1996)An analysis of the diffusion of oxygen and carbon dioxide through linear low density polyethylene (LLDPE) subjected to longitudinal and transversal induced stretching in the ratio 2:1, is presented in this paper. The ... -
Effect of annealing on the permeation characteristics of gases of coextruded LLDPE films
Elsevier (1996)The temperature dependence of both the permeability and diffusion coefficients of carbon dioxide, oxygen and nitrogen in annealed LLDPE films are studied. It is found that the values of the permeability coefficient through ... -
Oxygen transport through methacrylate-based hydrogels with potential biological capability
Elsevier (1996)The permeability to oxygen of hydrogels prepared from copolymers of 2-hydroxymethyl methacrylate and p-methacryloxyl-oxyacetanilide have been studied by using an oxygen electrode in combination with a permeometer. The ... -
Electrokinetic phenomena in microporous membranes with a fixed transverse charge distribution
Elsevier (1996-05)The charged capillary model for microporous membranes has been extended to account for a distribution of fixed charge transversal to the pore wall. The non-linearized Poisson-Boltzmann equation has been solved numerically ... -
Transport of Water and Gases through EVA/PVC blend films – Permeation and DSC investigations.
Elsevier (2004-06)The transport of water vapor and gases (oxygen and carbon dioxide) through poly(ethylene-co-vinyl acetate) (EVA) films of different VA content, poly(vinylchloride) (PVC) and EVA/PVC blend films, was analysed from permeation ... -
Unified approach to describe optical pulse generation by propagation of periodically phase-modulated CW laser light
Optical Society of America (2006)The analysis of optical pulse generation by phase modulation of narrowband continuous-wave light, and subsequent propagation through a group-delay-dispersion circuit, is usually performed in terms of the socalled bunching ... -
Interplay of host volume variations and internal distortions in the course of intercalation into disordered matrices
(2007)Based on a combination of the distortive lattice gas model and the maximum information entropy approach, the thermodynamics of insertion into disordered hosts is analyzed. It is found that the isotherm specificities can ... -
Excitons diffusion and singlet-triplet occupation at high Bose-Einstein chemical potential
Elsevier (2008)The paper investigates the bosonic aspects of exciton statistics in non-equilibrium situations. A kinetic model is formulated treating the excitons in different states as chemical species, using a master equation consistent ... -
Recombination rates in heterojunction silicon solar cells analyzed by impedance spectroscopy at forward bias and under illumination
Elsevier (2008)Impedance spectroscopy (at forward bias and under illumination) of solar cells comprised thin hydrogenated amorphous silicon (a-Si:H) films deposited on crystalline silicon (c-Si) wafers was analyzed in terms of ac equivalent ... -
Band unpinning and photovoltaic model for P3HT:PCBM organic bulk heterojunctions under illumination
Elsevier (2008)Capacitance analysis of P3HT:PCBM bulk heterojunction solar cells, in dark and under illumination, shows a linear Mott-Schottky characteristic at moderate reverse bias, indicating p-doping of the organic blend. The flatband ... -
Charge carrier mobility and lifetime of organic bulk heterojunctions analyzed by impedance spectroscopy
Elsevier (2008)Charge carrier diffusion and recombination in an absorber blend of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C<sub>61</sub>-butyric acid methyl ester (PCBM) with indium tin oxide (ITO) and aluminium contacts have been ... -
Efficient blue emitting organic light emitting diodes based on fluorescent solution processable cyclic phosphazenes
Elsevier (2008)Solution processable blue fluorescent dendrimers based on cyclic phosphazene (CP) cores incorporating amino-pyrene moieties have been prepared and used as emissive layers in organic light emitting diodes (OLEDs). These ... -
High carrier density and capacitance in TiO2 Nanotube arrays induced by electrochemical doping
American Chemical Society (2008)The paper describes the electronic charging and conducting properties of vertically oriented TiO2 nanotube arrays formed by anodization of Ti foil samples. The resulting films, composed of vertically oriented nanotubes ... -
Influence of the Potassium Chloride Concentration on the Physical Properties of Electrodeposited ZnO Nanowire Arrays
American Chemical Society (2008)The structural, electrical, and optical properties of zinc oxide nanowire arrays electrodeposited from the reduction of molecular oxygen in aqueous solutions containing zinc chloride and potassium chloride are studied as ... -
A review of recent results on electrochemical determination of the density of electronic states of nanostructured metal-oxide semiconductors and organic hole conductors
Elsevier (2008)The paper reviews recent results on electrochemical methods applied to the determination of the density of electronic states in several components of advanced nanostructured devices such as the dye solar cell (Grätzel ... -
Large improvement of electron extraction from CdSe quantum dots into a TiO<sub>2</sub> thin layer by N3 dye coabsorption
Elsevier (2008)Extraction of electrons and holes photogenerated in CdSe quantum dots (QD) of 2.3 nm diameter, is monitored by Surface Photovoltage Spectroscopy. The extraction of electrons into a thin TiO<sub>2</sub> layer increases ... -
Rectification properties and pH-dependent selectivity of meningococcal class 1 porin
(2008)We studied the current rectification properties and selectivity of class 1 porin (PorA) from Neisseria meningitidis (strain H44/76 A3A4) reconstituted in planar lipid membranes varying salt concentrations and pH. PorA ... -
Injection and Recombination in Dye-Sensitized Solar Cells with a Broadband Absorbance Metal-Free Sensitizer Based on Oligothienylvinylene
American Chemical Society (2008)A new metal-free sensitizer for improved light harvesting with dye-sensitized solar cells (DSC) has been synthesized and fully characterized. The molecular sensitizer was engineered by linking the tiophenes groups by methine ... -
Capacitance, spectroelectrochemistry and conductivity of polarons and bipolarons in a polydicarbazole based conducting polymer
Elsevier (2008)The paper discusses the interpretation of electrochemical and spectroelectrochemical measurement of charging and transport of electronic species in conducting polymers, as a function of the polymer potential. The charging ... -
Dielectric losses measured in a sodium aluminosilicate glass by using electrical insulating barriers and non-isothermal experimental conditions
Elsevier (2008)Ac conductivity and dielectric losses are measured on a sodium aluminosilicate glass using various experimental conditions. Data obtained using metallic contacts and insulating barriers are compared. The influences of the ...