Magnetic field imaging with nitrogen-vacancy ensembles

By L. Pham, D. Sage, P. Stanwix, T. Yeung, D. Glenn, A. Trifonov, N. Bar-Gill, C. Belthangady, P. Cappellaro, P. Hemmer and 4 more. 2011

285 citations recorded by the source corpus.

We demonstrate a method of imaging spatially varying magnetic fields using a thin layer of nitrogen-vacancy (NV) centers at the surface of a diamond chip. Fluorescence emitted by the two-dimensional NV ensemble is detected by a CCD array, from which a vector magnetic field pattern is reconstructed. As a demonstration, ac current is passed through wires placed on the diamond chip surface, and the resulting ac magnetic field patterns are imaged using an echo-based technique with sub-micron resolution over a 140 μm×140 μm field of view, giving single-pixel sensitivity . We discuss ongoing efforts to further improve the sensitivity, as well as potential bioimaging applications such as real-time imaging of activity in functional, cultured networks of neurons.

Subfields: Atomic and Molecular Physics, and Optics, Geophysics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/42766966fbf33ba9f10cd92c25d9e417c94b666d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. M. Turner
2. J. Barry
3. J. Schloss
4. C. Hart
5. L. Pham
6. E. Bauch
7. R. Walsworth
8. John G. Rarity

In Geophysics

1. M. Turner
2. J. Schloss
3. J. Barry
4. R. Walsworth
5. C. Hart
6. L. Pham
7. E. Bauch

In Materials Chemistry

1. M. Turner
2. R. Walsworth
3. C. Hart
4. J. Schloss
5. J. Barry
6. L. Pham
7. E. Bauch

Citations in the corpus

• Simultaneous Broadband Vector Magnetometry Using Solid-State Spins (2018, methodology): “1(d)), the three Cartesian components of a vector magnetic field signal can be sensed using a monolithic diamond crystal [19].”
• Optical magnetic imaging of living cells (2013, unknown): “As recently shown using a variety of methods 6, 9–10 , NV centres within room-temperature diamond can be brought into few nm proximity of magnetic field sources of interest while maintaining long NV electronic spin coherence times (~ms), a large (~Bohr magneton) Zeeman shift of the NV spin states,…”
• Sensitivity optimization for NV-diamond magnetometry (2019, methodology): “Furthermore, increasing interrogation volume is incompatible with high-spatial-resolution sensing and imaging modalities (Fu et al., 2014; Glenn et al., 2017, 2015; Le Sage et al., 2013; Pham et al., 2011; Simpson et al., 2016; Steinert et al., 2010; Tetienne et al., 2017).”
• Laser writing of coherent colour centres in diamond (2016, background): “Beyond quantum photonic devices, the ability to write large and detailed 2D or 3D arrays of NV defects may find use in magnetic field imaging systems [31].”