DNA electrophoresis in a monodisperse porous medium

Electrophoresis of DNA migrating in an ordered matrix is studied and compar ed with classical agarose gel electrophoresis. A well-defined migration med ium is obtained by crystallization of monodisperse silica spheres. Electrop horetic mobility of DNA is measured with fluorescence recovery after photob leaching experiments. The main result is that, as it was the case for gel e lectrophoresis, diffusion and electrophoretic mobility of DNA in such a med ium are well described with reptation theories.