Using the G-CAPode concept, the capacitance of the W-Cap for the whole working window can be tailored depending on the gate Ubias similar to a transistor (Figure ). By applying a linearly increasing negative Ubias, the areal capacitance of the W-Cap could be controlled leading to a linear increase because the working window of the W-Cap (CAPode) is shifted to the open polarization direction. In contrast, by applying positive Ubias the areal capacitance is significantly decreased with hyperbolic characteristics. Hence, the G-CAPode architecture allows to control the W-Cap capacitance from 3.5 to 37.5 mF cm -2 .