New models of fluid transport are expected to emerge from the confinement of liquids at the nanoscale, where the behaviour of matter strongly departs from common expectations. This is the field of Nanofluidics: taking inspiration from the solutions found by evolved biological systems, new functionalities will emerge from the nanometer scale, with potential applications in ultrafiltration, desalination and energy conversion. Nevertheless, advancing our fundamental understanding of fluid transport at the smallest scales requires mass and ion dynamics to be ultimately characterized across channels with dimensions close to the molecular size. A major challenge for nanofluidics thus lies in building distinct and well-controlled nanochannels, amenable to the systematic exploration of their properties. In this talk we will revisit the state of the art of fluid and ion transport at nano and molecular scale and we will discuss the recent advances obtained thanks to the development of 2D and 1D carbon systems