Pull-in study of an electrostatic microactuator is essential for making the
electrostatic actuation more effective. In this paper, pull-in analysis is
presented for an electrostatic torsion microactuator. The torsion microact
uator can be used as a microtorsion mirror. A polynomial algebraic equation
for the pull-in voltage and pull-in angle of a torsion microactuator is de
rived, Two types of microactuators fabricated using bulk micromachining are
presented. Measurements done on the fabricated microactuators are reported
, showing deviations within 1% error from the calculations. [325].