Micro-electro-mechanical system variable capacitors and actuation components and related methods are provided. In a near-field scanning microscope using a scatter probe, the resolution ability is limited to at most several ten nm because of the external illuminating light serving as background noise. More specifically, the ring gear includes opposing inner and outer circumferential surfaces separated by side circumferential edges. An assistant main driver generates assistant last output data to the common node from the pull-up and down signals in accordance with a state of the assistant drive signal. The rings or bands are located on the inner surface of the damper where the valve spring surrounds the damper.