The combination of the transport properties of liquids with the high thermal conductivity of metals is a promising way of improving heat transfer efficiency and thus reduce energy consumption in a multitude of practical applications. In this context, metal-based nanofluidic suspensions show great promise as novel heat carriers. An enhancement in thermal conductivity depends strongly on the nature of the nanoparticles, but also depends on the nature of the host fluid. In the case of glycerol, we have recently found a significant enhancement of the relative thermal conductivity at ambient conditions upon the addition of copper-based nanoparticles.The aim of this proposal is to investigate, by means of neutron spectroscopy (IRIS), the effect of copper nanoparticles on the molecular transport properties of glycerol.