Hello, I have been looking into NV in diamond and how it can be used for nanoscale magnetometry, and was wondering if anyone could help explain how it works or link to a paper that does. Is it just a spin 1 state (splits to 3 levels) that undergoes NMR or is there something else happening? I'm just having a bit of trouble seeing what's going on, and how it can be used to help image other 'things' (for lack of a better word - I'm a little tired :S ) I thought NMR spec. allowed us to discover the properties of a sample, and don't really understand how placing these centres close to it would help. Thanks for your time.