The continuation of this proposal is intended to further the measurements required for the full structural investigation of binary alloy FePt nanoparticles (NPs) and the surrounding surfactant layer. We intend to carry out isotopic substitution experiments, utilising the capabilities of the NIMROD beamline. Upcoming experiments require a novel flow-cell system which will require additional beamtime to optimise the experimental set up and methods. This system is being developed to analyse the nanoparticle-surfactant system their natural state in solvent suspensions. We will then refine a real space structural model of the NP-surfactant systems using this PDF data. The results of which will be immediately publishable, shedding new light on the fundamental properties of nanocrystal systems and their bio-functionality, enabling key applications information technologies and biomedicine.