Frequency dependent figure-of-merit in cylindrical thermoelectric nanodevices

We use a theoretical mesoscopic model accounting for memory and nonlocal effects in thermoelectricity in order to investigate how the figure-of-merit in cylindrical thermoelectric nanodevices is conditioned in frequency-dependent situations. Two different situations, regarding the relative values of the particles׳ mean-free path and the characteristic size of the system, are analyzed. It is shown that in both situations the performances of the thermoelectric devices are reduced. However, nonlocal effects may be used as an aiding tool to have less marked reductions in those performances.