High-resolution, Ultra-sensitive Magnetic Imaging Using an Ensemble of Nitrogen-Vacancy (NV) Centers in Diamond

Ensembles of nitrogen-vacancy (NV) centers in diamond allow the detection of weak magnetic fields under ambient conditions, with wide-ranging applications in the physical and life sciences. We have previously demonstrated high-sensitivity and high-resolution NV-diamond magnetic field imaging devices in a university laboratory setting. The proposed SBIR project will transition these research results into commercial applications. The proposed diamond magnetic field imager will operate in a scanning-confocal mode, and be applicable to both physical science samples and biological systems. In Task 1 we will design a robust-packaged diamond magnetic field imager capable of meeting the following performance goals for a Phase II instrument: spatial resolution<300 nm, AC magnetic field sensitivity<10 nT/Hz1/2, and field-of-view ~1 mm. In Task 2 we will assess techniques to realize spatial resolution<100 nm for the Phase II instrument. In the Phase I Option we will update the Phase II instrument design to provide spatial resolution<100 nm and assess potential Phase III applications of a fieldable instrument. A commercialization strategy and technology transition plan is also presented.