I've been wondering why we don't fabricate huge arrays or stacks of miniature versions of these. The voltage requirements should go down as the size decreases, right? Does some other aspect not scale well?
There are electrostatic MEMs devices so it would scale well with a flexible material and the dielectric inserted in some way. These smaller devices are lower voltage (90-100V versus 6-10kV in the above) and require the use of a converter. The current is virtually zero for both though.