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The electrostatic comb drive actuator is one of the main building blocks in the field ofmicro electro-mechanical systems (MEMS). Most of the comb actuators presented previously have fingers that are rectangular in shape which produce a stable, constant force output during actuation. The use of sawtoth fixed fingers in a comb drive, which were presumed to produce an increasing force output with displacement due to the increased number of regions where fringing force, the driving force of comb actuators, appear. The dimensions of the sawtoth were derived from finite element analysis (FEA) of simplified finger models with sawtoth type fingers of various dimension and were compared to the rectangular finger model that showed that the sawtooth type fingers have 7~9 times stronger driving force. Finally, comb drive actuators with sawtooth type and rectangular er, the comb actuator with sawtooth type fingers showed about 1.7 times greater electrostatic force than the one with rectangular fingers at equal driving voltages. In conclusion, using the proposed sawtoth type comb fingers in a comb drive makes it possible to increase its displacement