A kit for modifying a target structure which mediates or is associated with a biological activity, comprising: - at least one energy augmentation structure, wherein the at least one energy augmentation structure is capable of capturing one or more wavelengths of electromagnetic energy representing an incident energy wave, and having captured the incident energy wave, augmenting the one or more wavelengths of captured electromagnetic energy in at least one property, and then outputting an energy wave with the at least one property augmented, wherein "energy augmentation" means effecting some change in one or more wavelengths of electromagnetic energy in at least one property, wherein the at least one property is intensity, power, associated electrical field, associated magnetic field, wave amplitude, photonic flux, magnetic flux, phase, coherence, or propagation direction, - an energy converter capable of receiving the energy wave output by the at least one energy augmentation structure, converting said energy wave and emitting therefrom an emitted light of a higher or lower energy than the received energy, and the energy converter being disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the energy converter were remote from the at least one energy augmentation structure, or if the energy augmentation structure were not present; wherein the energy converter upgrades or downgrades an initiation energy to an activation energy capable of causing, either directly or indirectly, a predetermined change in the target structure; and, optionally, a plasmonics-active agent, wherein the plasmonics-active agent, if present, enhances or modifies the applied initiation energy or the activation energy generated by the energy converter, or both; and one or more containers suitable for storing the agents in stable forms; characterised in that the at least one energy augmentation structure is an antenna. - at least one energy augmentation structure, wherein the at least one energy augmentation structure is capable of capturing one or more wavelengths of electromagnetic energy representing an incident energy wave, and having captured the incident energy wave, augmenting the one or more wavelengths of captured electromagnetic energy in at least one property, and then outputting an energy wave with the at least one property augmented, wherein "energy augmentation" means effecting some change in one or more wavelengths of electromagnetic energy in at least one property, wherein the at least one property is intensity, power, associated electrical field, associated magnetic field, wave amplitude, photonic flux, magnetic flux, phase, coherence, or propagation direction, - an energy converter capable of receiving the energy wave output by the at least one energy augmentation structure, converting said energy wave and emitting therefrom an emitted light of a higher or lower energy than the received energy, and the energy converter being disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the energy converter were remote from the at least one energy augmentation structure, or if the energy augmentation structure were not present; wherein the energy converter upgrades or downgrades an initiation energy to an activation energy capable of causing, either directly or indirectly, a predetermined change in the target structure; and, optionally, a plasmonics-active agent, wherein the plasmonics-active agent, if present, enhances or modifies the applied initiation energy or the activation energy generated by the energy converter, or both; and one or more containers suitable for storing the agents in stable forms; characterised in that the at least one energy augmentation structure is an antenna.