Manipulating nanoparticles in liquids is crucial for their scalable implementation in future technologies. For example, such liquids can be used like paint to create uniform films over large areas at low costs. We have developed a method to dissolve the highly promising nanoparticles known as 'carbon nanotubes'. These minute tubes, 10,000th the size of a human hair, promise an array of important future applications from flat screens to smart textiles. In this experiment, we will use neutron scattering to measure the arrangement of the solvent molecules around the nanotubes in our solutions, in order to understand how they dissolve. We will also investigate predictions that the nanotubes will line up at high concentrations. The knowledge gained will permit the optimisation of these liquids for their use in creating future nanotube-based technologies.