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US 12,727,166 B2Granted
Ferroelectric nanoparticle capacitor for non-binary logics
AssigneeTerra Quantum AG
InventorsAnna Razumnaya, Yurii Tikhonov, Igor Lukyanchuk, Valerii Vinokour
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Abstract
A ferroelectric nanoparticle capacitor-device comprises a pair of conductive elements electrically insulated from each other, and ferroelectric nanoparticles arranged between the conductive elements of the pair. The ferroelectric nanoparticles are adapted to provide at least three polarization states with different total ferroelectric polarizations.
Claims15
A ferroelectric nanoparticle capacitor-device, comprising:
- a pair of conductive elements including a first conductive element and second conductive element;
- a dielectric separator material electrically insulating the pair of conductive elements from each other;
- a charge control device configured to control a charge on the second conductive element of the pair of conductive elements, the charge control device comprising an additional conductive element that is electrically insulated from the pair of conductive elements;
- a dielectric spacer separating the additional conductive element from the first conductive element;
- a voltage source configured to apply a voltage between the additional conductive element and the second conductive element, the first conductive element being electrically floating;
- and
- a plurality of ferroelectric nanoparticles arranged between the pair of conductive elements and configured to provide respective individual polarization states;
- wherein respective sizes of the ferroelectric nanoparticles along any direction do not exceed 100 nm;
- wherein the plurality of ferroelectric nanoparticles are configured to provide at least three polarization states each referring to a projection of a total ferroelectric polarization of the plurality of ferroelectric nanoparticles onto an axis;
- wherein the at least three polarization states refer to combinations of the individual polarization states of the plurality of ferroelectric nanoparticles, the individual polarization states referring to projections of the individual polarizations of the plurality of ferroelectric nanoparticles onto the axis.
7 more elements
A method for operating a ferroelectric nanoparticle capacitor-device, wherein the ferroelectric nanoparticle capacitor-device comprises:
- a pair of conductive elements including a first conductive element and second conductive element;
- a dielectric separator material that electrically insulates the pair of conductive elements from each other;
- a charge control device configured to control a charge on the second conductive element of the pair of conductive elements, the charge control device comprising an additional conductive element that is electrically insulated from the pair of conductive elements;
- a dielectric spacer separating the additional conductive element from the first conductive element;
- a voltage source configured to apply a voltage between the additional conductive element and the second conductive element, the first conductive element being electrically floating;
- and
- a plurality of ferroelectric nanoparticles arranged between the pair of conductive elements and configured to provide respective individual polarization states;
- wherein respective sizes of the ferroelectric nanoparticles along any direction do not exceed 100 nm;
- wherein the plurality of ferroelectric nanoparticles are configured to provide at least three polarization states having different total ferroelectric polarizations each referring to a projection of the total ferroelectric polarization of the plurality of ferroelectric nanoparticles onto an axis;
- wherein the at least three polarization states refer to combinations of the individual polarization states of the plurality of ferroelectric nanoparticles, the individual polarization states referring to projections of the individual polarizations of the plurality of ferroelectric nanoparticles onto the axis;
- and
- wherein the at least three polarization states includes a minimum-ferroelectric-polarization state, a maximum-ferroelectric-polarization state, and at least one intermediate-ferroelectric-polarization state;
- the method comprising:
- selecting a selected intermediate-ferroelectric-polarization state;
- selecting a first voltage or charge according to the selected intermediate-ferroelectric-polarization state;
- and
- applying the first voltage or charge to one of the pair of conductive elements to set the plurality of ferroelectric nanoparticles to the selected intermediate-ferroelectric-polarization state.
14 more elements
Dependencies are inferred from the claim text.