  We demonstrate theoretically the feasibility of selective self-excitation of
higher-mode flexural vibrations of graphene nano-ribbons and carbon nanotubes
by the means of magnetomotive instability. Apart from the mechanical resonator,
the device consists only of a constant voltage source, an inductor, a
capacitor, a gate electrode and a constant magnetic field. Numerical
simluations were performed on both graphene and carbon nanotubes displaying an
overall similar behaviour, but with some differences arising mainly due to the
non-linear mechanical bending forces. The advantages and disadvantages of both
materials are discussed.
