A method of manufacturing an electronic-charge-transferring device includes providing
a charged species source and a charge species drain and providing a movable component
for transferring charge to the charged species drain. A first protrusion proximate
to the moveable component and a second protrusion proximate to the moveable component
are also provided. The moveable component is positioned in close proximity to the
charged species source, and at least one of the moveable component, the first protrusion
and the second protrusion is of a micrometer scale or smaller.