“…Recently, Dokukin and Sokolov introduced the ringing AFM mode, which enhances the capabilities of force-distance modes in probing mechanical properties at the nanoscale [2]. Moreover, multifrequency surface strain force microscopy [3] has been developed to augment existing modalities such as piezoresponse force microscopy (PFM) [4,5], atomic force infrared spectroscopy (AFM-IR) or photothermal induced resonance (PTIR) [6][7][8], piezomagnetic force microscopy (PmFM) [4,9], atomic force acoustic microscopy (AFAM) [10,11], and scanning Joule expansion microscopy (SJEM) [12]. In the 3 development of these new AFM techniques, the acquisition and analysis of external data generated by the AFM are imperative.…”