Hidden vertical comb-drive actuator on PDMS fabricated by parts-transfer

This paper reports complex three-dimensional (3-D) MEMS devices (polydimethylsiloxane) fabricated on PDMS by a parts-transfer method. Our target size of parts is 100-μm-order in our parts-transfer method. First, we evaluate the transfer yield and the positioning accuracy. Secondly, we assemble a hidden vertical comb-drive actuator, including comb-electrodes and a support beam underneath its upper plate. Finally, we measure the drive characteristics of the actuator. Our actuators are the first demonstration of fabricating movable MEMS devices by parts-transfer technique. The demonstration indicates that complex 3-D MEMS devices with movable mechanical functions can be fabricated simply using our method.