953695.fig.009a
(a)
953695.fig.009b
(b)
953695.fig.009c
(c)
953695.fig.009d
(d)
Figure 9: Shape analysis of Lissajous curves on measured input (V in) and output (V out) voltages for the device : (a) non elliptic shape at , (b) transition between nonelliptic and elliptic shapes at , (c) elliptic shape at , (d) elliptic shape at .