  A Capacitor-within-Capacitor (CWC) is a nested electronic element that has
two components: the cell (e.g., the outer capacitor) and the gate (e.g., the
inner capacitor). The designations for the gate and cell may be interchanged.
Here, an analysis and experimentation on a diode-interfaced parametric
oscillations and amplification are described. By replacing the diode with a
junction, made of doped nano-graphene films, we demonstrated a new structure
whose doping may be electronically and chemically controlled.
