  Surface Acoustic Wave (SAW) resonances were imaged within a closed domain in
the ferroelectric LiTaO$_3$ via scanning Microwave Impedance Microscopy (MIM).
The MIM probe is used for both SAW generation and measurement, allowing
contact-less measurement within a mesoscopic structure. Measurements taken over
a range of microwave frequencies are consistent with a constant acoustic
velocity, demonstrating the acoustic nature of the measurement.
