Listar Departament: Física por fecha de publicación
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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 ... -
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 ... -
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 ... -
Introducció a l'experimentació
Publicacions de la Universitat Jaume I (1999)Normalment les coses que s'aprenen en el laboratori requereixen el guiatge d'experts. Aquest llibre presenta una visió sumària i actualitzada dels procediments bàsics de l'experimentació cientificotècnica: assenyala i ... -
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 ... -
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 ... -
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 ... -
In situ investigation of dewaxing and sintering of stainless steel powder compacts by impulse excitation
Elsevier (2008)The dewaxing and sintering behaviour of 316LHD (high-density) powder metallurgy stainless steel grade have been in situ characterized by means of the high-temperature impulse excitation technique. The evolution of the E ... -
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 ... -
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 ... -
Physical electrochemistry of nanostructured devices
Royal Society of Chemistry (2008)This Perspective reviews recent developments in experimental techniques and conceptual methods applied to the electrochemical properties of metal-oxide semiconductor nanostructures and organic conductors, such as those ... -
Porosity dependence of electron percolation in nanoporus TiO2 layers
American Institute of Physics (2008)The electron diffusion coefficient at varying porosity has been determined in a series of nanostructured TiO2 films of different initial thicknesses. The porosity was changed by applying different pressures prior to ... -
20 GHz arbitrary radio-frequency waveform generator based on incoherent pulse shaping
Optical Society of America (2008)We demonstrate a new approach of photonically assisted radiofrequency (RF) waveform generation using a spectrally incoherent light source. The system is based on the so-called generalized frequency-to-time mapping ... -
The ionic selectivity of large protein ion channels
Institut d'Estudis Catalans. Secció de Ciències i Tecnologia (2008)Large, highly conductive ion channels have a major functional role in the cell life cycle. They allow the exchange of charged and neutral solutes across the cell membrane envelope and regulate the influx of nutrients ... -
Inverted Solution Processable OLEDs Using a Metal Oxide as an Electron Injection Contact
Wiley-Blackwell (2008)A new type of bottom-emission electroluminescent device is described in which a metal oxide is used as the electron-injecting contact. The preparation of such a device is simple. It consists of the deposition of a thin ... -
Spatial-chirp compensation in dynamical holograms reconstructed with ultrafast lasers
American Institute of Physics (2008)A computer generated hologram (CGH) reconstructed with a sub-100-fs laser pulse at the focal plane of a conventional refractive lens experiences a large amount of spatial chirp. We report the shaping of a 12 fs laser pulsed ...