Magnetically tunable resonator

1. A microwave device, comprising:

a plurality of magnetically tunable nano-resonators, wherein the nano-resonators comprise nanoparticles of a crystalline magnetic material embedded into cavities of a flexible sheet.

2. The microwave device of claim 1 ,

wherein the nanoparticles are spheres of yttrium-iron-garnet.

3. The microwave device of claim 1 , wherein the flexible sheet comprises a first layer bonded to a second layer, both layers being made from flexible semiconductor nanomembranes.

4. The microwave device of claim 3 ,

wherein both layers comprise electrodes and each of said cavities is at least partially encircled by two electrodes which extend into directions that are perpendicular to each other.

5. The microwave device of claim 1 ,

wherein the cavities form a cavity array.

6. The microwave device of claim 1 , wherein different nano-resonators are independently tunable.

7. The microwave device of claim 1 ,

wherein the microwave device is a device selected from a group consisting of a microwave receiver, a microwave emitter, a microwave filter, and a microwave mixer.

8. The microwave device of claim 1 ,

wherein the first layer or the second layer comprises a graphene layer.

9. A method of manufacturing a magnetically tunable resonator, the method comprising:

forming a first layer having first wells;

flowing a colloid comprising colloidal nanoparticles of a crystalline magnetic material over the first layer;

drying the first layer; and

adding a second layer having second wells matching the first wells to the first layer.

10. The method of manufacturing a magnetically tunable resonator of claim 9 , wherein the nanoparticles are spheres of yttrium-iron-garnet.

11. The method of manufacturing a magnetically tunable resonator of claim 9 , further comprising:

manufacturing the first layer and the second layer from flexible nanomembranes.

12. The method of manufacturing a magnetically tunable resonator of claim 9 , wherein the first layer and the second layer comprise a semiconductor material.

13. The method of manufacturing a magnetically tunable resonator of claim 9 , further comprising:

forming the wells by applying a photolithographic process to the first and second layer.

14. The method of manufacturing a magnetically tunable resonator of claim 9 , wherein the matching first and second wells form cavities.

15. The method of manufacturing a magnetically tunable resonator of claim 6 , wherein the cavities form a cavity array.

16. The method of manufacturing a magnetically tunable resonator of claim 9 , wherein at least one of the first and the second layer comprises electrically conductive material.

17. The method of manufacturing a magnetically tunable resonator of claim 9 , wherein a cavity formed by two matching wells comprises a nanoparticle of a crystalline magnetic material, and a resonance frequency of the nanoparticle oscillating within the cavity is tunable by flowing an electrical current through an electrically conductive material that at least partially encircles the cavity.

18. The method of manufacturing a magnetically tunable resonator of claim 17 , wherein the resonance frequency is tunable to frequencies above 1 Terahertz.