Figure 8
From: Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast

Time traces (black lines) of the first, (a) second, (b) third, (c) flexural eigenmodes retrieved by the inverse wavelet transform (iWT). The time-frequency intervals used to retrieve the time traces, expressed as [t min , t max , f min , f max ] with time in ms and frequency in kHz, are as follows: (a) [−0.1, 0.3, 8, 50], (b) [−0.05, 0.15, 84, 256], (c) [−0.02, 0.06, 315, 445]. The red lines are the envelopes of the time traces. The light gray lines are the calculated time traces from the numerical simulation results. The dotted blue line in a) is an exponential fit to the decaying portion of the envelope, from which the Q1 factor is calculated. Note the scaling of times and tip displacements.