This proposal aims at exploring the frontiers of the optics of Dirac materials. By modelling how light interacts with two and three dimensional Dirac materials, we want to access the peculiar world of electrons with very unconventional properties. We will image how the sea of electrons reacts to an external light source. On the one hand, we want to use this light source to measure how viscous the sea of electrons is. For example, whether it is more like honey, a viscous fluid, or more like water, a less viscous fluid. On the other hand, we will put forward proposals to extend the lifetime of plasmons in Dirac materials. Plasmons can be thought of as a wave in the sea of electrons. In this wave the electrons and the incident light are coupled with each other and move around coherently. It is possible to manipulate these plasmons in order to guide light in the direction you want and use them for photonic applications. However, it remains a challenge to find systems in which the plasmons live long enough to be useful. Therefore, we will investigate whether it is possible to take advantage of particular properties of the crystal or external electric currents to make the plasmons more robust and extend their lifetime. The proposed work will be done in close collaboration with several foreign experimental groups that will provide the necessary feedback to improve our models and to verify the proposed physics.