Salahuddin and Datta found that, under certain conditions, the use of ferroelectric materials leads to a negative capacitance (that is, the voltage of the capacitor decreases as charge is added).

Basic capacitors, formerly known as condensers, consist of two parallel plates - one positive and one negative - separated by a dielectric (nonconducting) material. The plates may be square, ...

This diagram shows the fundamental components of a capacitor—positive and negative electrodes flanking a dielectric ... the exploration of self-healing and self-charging nanocapacitors will lead to ...