We aim to turn a novel quantum sensor based on a Bose-Einstein condensate (BEC) atomic probe into a scientific instrument. As we have recently demonstrated, a BEC microscope can image magnetic patterns and active electric current pathways in two-dimensional samples with ultra-high sensitivity (picotesla/nanoampere) and micrometre resolution. The main purpose of the project is to further develop and exploit the unique capabilities of BEC microscopy to make advances in the field of nanomaterials and their applications. Magnetic imaging allows for detecting active current flow rather than measuring conductivity which is the standard characterisation property in electrical testing. Imaging the active current flow enables the observation of functional responses in complex conductive samples, therefore, such an instrument is in high demand in materials science and a wide range of application fields. Until recently, no suitable magnetic imaging technology has been available to observe these functional responses, as existing technologies have been fundamentally limited by the trade-off between sensitivity and resolution. With this project we will demonstrate how BEC microscopy can deepen our understanding of the structure-property relationships in nanomaterials and accelerate the development of novel conductive materials such as transparent electrodes based on random networks of nanowires. We will also apply the BEC microscope to help new discoveries in bioengineering by investigating how cells respond to electrical stimulus on carbon nanotube scaffolds for example when directing the differentiation of stem cells into neural cells which could have huge implications in future therapies.