Certain MEMS devices include layers patterned to have tapered edges. One
method for forming layers having tapered edges includes the use of an
etch leading layer. Another method for forming layers having tapered
edges includes the deposition of a layer in which the upper portion is
etchable at a faster rate than the lower portion. Another method for
forming layers having tapered edges includes the use of multiple
iterative etches. Another method for forming layers having tapered edges
includes the use of a liftoff mask layer having an aperture including a
negative angle, such that a layer can be deposited over the liftoff mask
layer and the mask layer removed, leaving a structure having tapered
edges.