The interface assembly, which consisted of 22 active electrodes shaped as φ2 × 2.5 mm pure silver rods, was positioned at the inter-electrode distance of 12.5 mm on a polyimide film.
The results indicate that the comb-shaped electrode would be a powerful (potential) candidate of electrode shape of the TENG to harvest the energy from real mechanical motions.
Three different electrode shapes are considered: circles, squares, and strips.
Furthermore, innovative electrode shapes and channel configurations must be implemented to obtain the high separation efficiencies.
The electrode shape constitutes a boundary condition and defines the field shape.
The design employs specific electrode shapes to allow one-layer connections.
Also a new electrode shape (TRFLC) was proposed and compared with the others.
The theoretical approach for the calculation of the electrode shape function is described.
Nevertheless, the field strength is reduced with respect to the quotient of electrode voltage and distance for any electrode shape.
Simulations of an electric field and an electric field gradient that was dependent on the electrode shape confirmed that the design of an optimal electrode shape is important for increasing the DEP force for effective cell manipulation.
A formula is derived to modify the fixed electrode shape for improvement of linearity based on the analysis.
