Capacitance-Based Frequency Adjustment of Micro Piezoelectric Vibration Generator

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="484381.fig.007a" src="https://static.hindawi.com/articles/tswj/volume-2014/484381/figures/484381.fig.007a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>A scheme</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="484381.fig.007b" src="https://static.hindawi.com/articles/tswj/volume-2014/484381/figures/484381.fig.007b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>B scheme</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="484381.fig.007c" src="https://static.hindawi.com/articles/tswj/volume-2014/484381/figures/484381.fig.007c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>C scheme</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="484381.fig.007d" src="https://static.hindawi.com/articles/tswj/volume-2014/484381/figures/484381.fig.007d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>D scheme</td></tr></table></td></tr></table>

<table>Natural frequency ratio versus thickness ratio.</table>

The Scientific World Journal

fig7

Figure 7

Figure 7: Capacitance-Based Frequency Adjustment of Micro Piezoelectric Vibration Generator 