Theoretical Modeling of Front Propagation of CdS Nanoparticles in a Gel
We report a theoretical model to describe the spatiotemporal dynamics of a new system consisting of sul de ions di¤using into an organic gel containing mercaptoethanol-capped cadmium ions. The product, cadmium sul de, exhibits a faint yellow transparent propagating front starting at the gel-outer electrolyte interface. When subjected to UV light, this system reveals uorescing CdS nuclei localized spatially in a narrow region (constant width), called pulse, that leads the front and propagates down the tube. The reported model is based on reaction-di¤usion equations coupled to dynamical competitive particle growth. The resulting evolution equations were solved numerically and the results are shown.
Andreas Öchsner, Irina V. Belova and Graeme E. Murch
M. Al-Ghoul and T. Ghaddar, "Theoretical Modeling of Front Propagation of CdS Nanoparticles in a Gel", Journal of Nano Research, Vol. 11, pp. 19-24, 2010