Atomic force microscopy under defined hydrodynamic conditions: three-dimensional flow calculations applied to the dissolution of salicylic acid

Article Abstract:

Atomic force microscopy was used to study the kinetics of the dissolution of salicylic acid in aqueous solution. A three dimensional finite element fluid dynamics simulation resulted in precise calculations.

Research and Development in the Physical, Engineering, and Life Sciences, Chemistry, Chemical research, Salicylic acid, Salicylic acids

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Hydrodynamics and mass transport in wall tube and microjet electrodes. Simulation and experiment for micrometer-scale electrodes

Article Abstract:

Study was conducted to examine the mass transport to micrometer-sized electrodes in a microjet (wall-tube) electrode configuration experimentally and through finite element modeling. According to the electrochemical imaging experiments, local mass transport is highly sensitive to the lateral position of the nozzle with respect to the electrode.

Science & research, Electrodes, Hydrodynamics, Aqueous solution reactions

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Evidence for nucleation-growth, redistribution, and dissolution mechanisms during the course of redox cycling experiments on the C60/NBu4C60 solid-state redox system: voltammetric, SEM, and in situ AFM studies

Article Abstract:

The reduction of microcystalline C60 abrasively attached to suitable electrode surfaces proceeds via a nucleation and growth type mechanism. The longer time scale processes involved in the electrochemical reduction and reoxidation of solid C60 mechanically attached to electrode surfaces closely resemble those seen for deposits formed by solvent evaporation or gas-phase deposition. This can be gleaned from the fact that after a few initial cycles of the potential, the same Voltammetric features are noted irrespective of the method of the material deposition. The extent of the electrochemical conversion is shown to depend strongly on the crystal size, with larger crystals being affected only at the solid-liquid interfacial region.

Usage, Oxidation-reduction reaction, Oxidation-reduction reactions, Electrochemistry, Nucleation, Nucleation (Chemistry), Carbon allotropes, Voltammetry

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