shown in Figure . The cell was then laminated with a transparent tape leaving space for making connections to the electrodes. The replacement of a polymer binder by an ordinary glue is known to enhance the conductivity by reducing contact losses, and enables intimate contact between the material and the substrate. Cyanoacrylate present in glue provides an effective electron-hole conduction pathway for the surface charges. Without the addition of Mn3O4 membranes in the cellulose paper (substrate), we observe 1 µV voltage at 10 N force (Figure ) from the FNG device. This voltage is due to the difference in the dielectric constant (ε) of the paper (3.7) and Kapton (2.78). This measurement is considered as blank for reference in further device measurements.