Fig. 3.

Power spectral density of buckled nanotube with ɛ₀ = −4 × 10⁻³ with F_z = 0.6 pN at logarithmically spaced temperatures. The built-in intrinsic damping dominates the apparent line width at the lowest temperature. (Inset) Plot of Q⁻¹ of the f_3z mode. Simulation data are shown as red dots, and theoretical predictions from Eq. 3 are plotted as a blue line. Labels beneath each spectral line correspond to their expected origin.