Figure 2.

Contribution C_nl to the membrane capacitance in the presence of mechanical resonance. The capacitance normalized to its maximum value γnq² is plotted against the ratio of the frequency ω to the resonance frequency ω_r. The plots correspond, respectively, to ${\omega }_{\eta }/{\omega }_r$ = 0.25, 0.5, 1, and 1.5 by changing either the drag coefficient η or the mass m, while keeping the elastic load K constant. The value for $\gamma n{q}^2\tilde{K}$ is assumed to be 0.05. To see this figure in color, go online.