Figure 3. Lateral structuring of pharmaceutical substances.

a) Representative SEM images of microstructured ASS morphology by deposition through a microscopic shadow mask. b) magnified SEM image of the square shaped of the deposited drug. c): current voltage response of a pharmaceutical field effect transistor (PFET) of Pilocarpine-HCl, cross section scheme (upper left) and part of the waver (lower right) used for the lateral structuring of the Pilocarpine-HCl PFET fabrication are shown as insets.