A three-dimensional dispersible nanoresonator structure for biological, medical and environmental applications and a method for manufacture thereof.

The present invention relates to nanosensors, in particular nanosensors for biologiocal, medical and environmental applications, and more specifically a three-dimensional nanoresonator structure.

The invention also relates to a method for the manufacture, by lithographic techniques, of three dimensional nanoresonators that are dispersible in a liquid such as water.

Nanoresonators, also known as nanoantennas, are resonator devices of nanometric dimensions which, when exposed to wide-spectrum exciting electromagnetic radiation, show increased absorption at a natural resonant frequency determined by the characteristics of the resonator structure and/or by the interactions with the environment in which they are immersed, this frequency being located between the THz range and the near infrared wavelengths.

The object of the present invention is to provide three-dimensional nanoresonators which are free, that is to say not fixed to any substrate and dispersible in a fluid medium, and have resonance properties tunable over a wide spectrum of wavelengths as a result of the design of the resonant structure, while being sensitive to the chemical and physical characteristics of their environment or to the presence of a specific molecular species.