Figure 6-5 illustrates the lens center's acceleration response and the impedance response from 20 kHz to 100 kHz by running the Frequency study. Within this range, the simulated resonant frequencies are identified at 29.2 kHz and 64.3 kHz. Notably, the accelerations at both peaks exceed the atomization threshold. The key characteristics of the two modes are listed in Table 6-4.

Figure 6-6 illustrates the mode shapes of the LCS for the two specific modes. In mode (0 1), you can see that the acceleration diminishes as you move from the center toward the edges, transitioning from red to blue. In mode (0 2), the acceleration similarly decreases from the center to the middle area before increasing again from the middle to the edges.

Figure 6-7 illustrates the lens surface acceleration of the LCS, highlighting the variation from the center to the edge. Note that only the central region surpasses the atomization threshold, enabling it to effectively expel water, while the edge region does not possess this capability.