Figure 2
From: Mass spectrometry based on a coupled Cooper-pair box and nanomechanical resonator system
Scaled absorption spectrum of the signal current as a function of the detuning Δ s and energy level diagram of thecoupled system. (a) Scaled absorption spectrum of the signal currentas a function of the detuning Δ s without landing anymasses on the NR. (b) The energy level diagram of the CPB coupled to an NR.(c) Signal absorption spectrum as a function of Δ s before (black solid line) and after (red dashed line) a binding event of ~10 functionalized 1587 bp long dsDNA molecules. Frequency shift of 95 kHz can bewell resolved in the spectrum. Other parameters used are ω n = 835 MHz, λ 0 = 0.01, Δ c = 0, Q = 5000, T 1 = 0.25 μ s,T 2 = 0.05 μ s, and Ω c = 3.