Microwave-free nuclear magnetic resonance at molecular scales.

摘要: The implementation of nuclear magnetic resonance (NMR) at the nanoscale is a major challenge, as resolution conventional methods limited to mesoscopic scales. Approaches based on quantum spin probes, such nitrogen-vacancy (NV) centre in diamond, have achieved nano-NMR under ambient conditions. However, measurement protocols require application complex microwave pulse sequences high precision and relatively power, placing limitations design scalability these techniques. Here we demonstrate NMR organic environment proton spins using NV while eliminating need for manipulation either or environmental states. We also show that sensitivity our significantly simplified approach matches existing techniques centre. Removing requirement coherent maintaining represents significant step towards development robust, non-invasive probes.