Abstract Here, we present a comprehensive study on atomic-scale in-situ biasing/heating scanning transmission electron microscopy ((S)TEM) of Al-amorphous SiO 2 –SiC interface. The investigation includes electrical, chemical, and structural analysis the interface at different temperatures (25–600 °C). results show that ~ 500 °C electrical (three-orders magnitude resistivity drop), chemical (dis...

We discuss, at the mean-field level, the asymptotic shape of the reaction fronts in the general nA+mB → C reaction-diffusion processes with initially separated reactants, thus generalizing to arbitrary reaction-order kinetics the work done by Gálfi and Rácz for the case n = m = 1. Consequences for the formation of Liesegang patterns are discussed. PACS. 82.20.Mj Nonequilibrium kinetics – 82.20....

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

We discuss, at the mean-field level, the asymptotic shape of the reaction fronts in the general nA+mB → C reaction-diffusion processes with initially separated reactants, thus generalizing to arbitrary reaction-order kinetics the work done by Gálfi and Rácz for the case n = m = 1. Consequences for the formation of Liesegang patterns are discussed. PACS. 82.20.Mj Nonequilibrium kinetics – 82.20....

2014 Starting from the Liouville equation we derive equations for density and concentration fluctuations in two-component polymeric liquids. An exact expression for the interdiffusion coefficient is obtained. As examples we consider mixtures of labelled molecules and the case of polymers solved in a low molecular weight liquid. The relation of the general formula to two widely used approximate ...

Ab initio molecular dynamics simulations are employed to investigate the dominant migration mechanism of the gallium vacancy in GaAs as well as to assess its free energy of formation and the rate constant of gallium self-diffusion. Our analysis suggests that the vacancy migrates by second nearest neighbour hops. The calculated self-diffusion constant is in good agreement with the experimental v...

Phase separated borosilicate glass samples were prepared by applying various heat treatments. Using selective chemical etching we performed AFM measurement on the phase separated glass surfaces. A quantitative roughness analysis allowed us to measure precisely the dependence of the characteristic size of the phase domains on heating time and temperature. The experimental measurements are very w...

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