Can DigiSim simulate radial diffusion at disk microelectrodes?
No. DigiSim can only simulate diffusion to those electrode geometries where diffusion can be described by a single dimensional variable (linear, cylindrical [or hemicylindrical], spherical [or hemispherical]). Cyclic voltammetric responses at a disk microelectrode can be approximated in DigiSim by using a hemispherical electrode of the appropriate radius; the CV responses at a band electrode can be approximated using a hemispherical electrode of the appropriate radius.