Ultrasound in SPM, often referred to as Ultrasonic Force Microscopy (UFM), works by applying high-frequency acoustic waves to the probe or sample. These waves induce mechanical vibrations, which interact with the sampleâs surface. The resulting data provides insights into the mechanical and structural properties of the material at the nanoscale level. The interaction between the ultrasonic waves and the sample can reveal features that are not detectable with conventional SPM techniques.
