FIG. 3 illustrates an example two-dimensional array 300 of square-shaped PMUT devices 301 formed from PMUT devices having a substantially square shape similar to that discussed in conjunction with FIGS. 1A, 1B, and 2. Layout of square surrounding edge support 302, interior support 304, and square-shaped lower electrode 306 surrounding the interior support 304 are illustrated, while other continuous layers are not shown for clarity. As illustrated, array 300 includes columns of square-shaped PMUT devices 301 that are in rows and columns. It should be appreciated that rows or columns of the square-shaped PMUT devices 301 may be offset. Moreover, it should be appreciated that square-shaped PMUT devices 301 may contact each other or be spaced apart. In various embodiments, adjacent square-shaped PMUT devices 301 are electrically isolated. In other embodiments, groups of adjacent square-shaped PMUT devices 301 are electrically connected, where the groups of adjacent square-shaped PMUT devices 301 are electrically isolated.
