Two main factors are explored in this paper to improve device
performance by reducing parasitic damping: box cross section and
box material. First, two box cross sections are studied to determine
their effect on performance. The cross sections are shown in Fig. 3
and consist of a box with a guide rail and without a guide rail. The
guide rail is a 0.5 mm radius extrusion that runs the height of the
box. In the box without the rail, the corners were removed so that