Visualization of the acoustic fields produced by our devices at the empirically determined kHz frequency domain as well as at the calculated resonance frequency is essential to understand the physical functioning of our devices. The corresponding characteristics of the acoustic fields, such as field form, mean displacements caused by the transduced oscillations, and thermal contributions or losses thereof-are also fundamental to understanding the discrepancy of our system with previously understood principles. To corroborate our proposed mechanism, we perform laser-doppler-vibrometry (LDV), Fig. , and infrared imaging measurements, Fig. , providing both visual and physical understanding of the underlying external stimuli affecting droplet acoustoinjection.