  Using nonequilibrium computer simulations, we study the response of
ferromagnetic nanofilaments, consisting of stabilized onedimensional chains of
ferromagnetic nanoparticles, under external rotating magnetic fields. In
difference with their analogous microscale and stiff counterparts, which have
been actively studied in recent years, nonequilibrium properties of rather
flexible nanoparticle filaments remain mostly unexplored. By progressively
increasing the modeling details, we are able to evidence the qualitative impact
of main interactions that can not be neglected at the nanoscale, showing that
filament flexibility, thermal fluctuations and hydrodynamic interactions
contribute independently to broaden the range of synchronous frequency response
in this system. Furthermore, we also show the existence of a limited set of
characteristic dynamic filament configurations and discuss in detail the
asynchronous response, which at finite temperature becomes probabilistic.
