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is ( | ϵ$_{F}$$_{L}$ − ϵ$_{0}$ | ) and these oscillations are present even in the limit of weak coupling. We conclude that this is a purely electronic process (plasmon oscillations). It is clear from the figure that in the strong coupling case, it contains two beating frequencies, therefore we interpret this as due to a mixture of electronic and mechanical frequencies. Secondly, in fig. 5, we have plotted the net current for fixed values of ϵ$_{F}$$_{L}$ = 1, ϵ$_{F}$$_{R}$ = 0 , tunneling energy, Γ = ℏ ω and for different values of coupling strength: η = 0 . 02 and η = 0 . 08 . We have found that in the regime ( Γ ≥ ℏ ω ), the effects of the oscillator are not apparent and the period of the nanomechanical oscillator can not be resolved. Why can the period of the oscillator not 

