Oxidation in porous silicon is studied for as-etched samples and samples subjected to high vacuum at room temperature. Attenuated Total Reflectance (ATR) measurements in infrared spectroscopy for temperatures ranging from ...

We report a study of the mobility-lifetime products of the two charge carriers in a-SiC:H alloys. The measurements were carried out as a function of the carbon concentration and the temperature. An analysis, relying on the ...

Metal-to-insulator transitions driven by strong electronic correlations occur frequently in condensed matter systems, and are associated with remarkable collective phenomena in solids, including superconductivity and ...

Measurements of photoluminescence, electronic surface states and effective surface area, at various stages of the anodization process, are presented. The results show a behavior different from that observed on n-type porous Si.

We propose a microphysical theory of the triboelectric effect by which mechanical rubbing separates charges across the interface between two materials. Surface electrons are treated as an open system coupled to two baths, ...

Se considera que las oscilaciones de períodos largos en los filamentos/prominencias observadas en EUV podrían conducir al filamento a un estado inestable, sin embargo, sus características (rango de frecuencia, amplitud, ...

La técnica de cirugía radioguiada se basa en la utilización de una sonda detectora de radiaciones para la localización y posterior extracción a través de procedimientos quirúrgicos del tejido enfermo, el cual acumula ...

Esta tesis trata sobre la Verificación del Comisionamiento del Acelerador Lineal UNIQUE, el cual se encuentra en el Hospital México. La metodología usada para este fin comprende el Protocolo Internacional para la Determinación ...

We introduce the “leaking elastic capacitor” (LEC) model, a nonconservative dynamical system that combines simple electrical and mechanical degrees of freedom. We show that an LEC connected to an external voltage source ...

We propose a dynamical theory of how the chemical energy stored in a battery generates the electromotive force (emf). In this picture, the battery's half-cell acts as an engine, cyclically extracting work from its underlying ...