Patent ID: 8611067

Claim:
A device for storing energy comprising two electrodes consisting of an anode and a cathode, a voltage control device connected to a power source, and a dielectric composition between said two electrodes, wherein said dielectric composition comprises: (a) multiple polaritonic nanoparticles, the majority of which have diameters within a predetermined range, wherein each of said polaritonic nanoparticles has at least one resonant frequency and comprises a paramagnetic atom; (b) a coating material in contact with said polaritonic nanoparticles, wherein said coating material completely encapsulates each of said polaritonic nanoparticles with a uniform thickness and comprises a bandgap attenuating the propagation of electromagnetic energy of at least one resonant frequency through said coating material; and (c) an electret-containing matrix material in contact with said coating material and said electrodes, wherein when a voltage differential is created between said two electrodes by said voltage control device, an electric field is created in said dielectric composition, an exciton is created in said matrix material, and a first plasmon forms at the interface of said electrodes and said matrix material, wherein a resonant frequency of said exciton overlaps with a resonant frequency of said first plasmon and that of a resonant frequency of an electromagnetic energy wave in said polaritonic nanoparticle, wherein said polaritonic nanoparticles comprise a perovskite ceramic material having a Curie temperature less than or equal to 23° C.