The interaction of atoms and molecules depends on the electromagnetic environment in which the atom or molecule is placed and not only on the atomic/molecular structure. Structured materials including metamaterials can give rise to unique and novel electric and magnetic environments, cause large local field enhancements as well as drastically modify the local density of photonic modes. These effects can affect very critically the absorption and emission of light by molecules deposited on metamaterials and plasmonic structures. The project aims to develop control over the absorption and emission rates, and magnitudes from structured plasmonic materials and metamaterials as well as study amplifying and non-linear plasmonic structured media.