Three-dimensional dispersible nanoresonator structure for biological, medical and environmental applications and method for manufacture thereof

A three-dimensional nanoresonator structure has a stack of laterally confined layers including at least a first layer and a second layer of different conductive materials between which a dielectric layer is interposed. The layers have at least a respective accessible surface area exposed to an environment in which the structure is immersed. Multiple three-dimensional nanoresonators that can be dispersed in an environment are formed from an array of nanoresonators fixed to a sacrificial substrate. The nanoresonators are subsequently separated from the substrate and conjugated with a chemical agent adapted to promote the formation of a stable colloidal suspension of nanoresonators in a liquid medium.