Developing Micron-Sized Magnetic Resonance

April 24, 2018

Fig. 1: Principle of Synchronized Readout (SR) protocol*

It’s not often that you see 50-year-old equipment in a modern physics laboratory, let alone find it at the center of cutting-edge research. But then, most such labs aren’t run by Ronald Walsworth.

A senior physicist at the Harvard-Smithsonian Center for Astrophysics and a member of the physics department faculty, Walsworth, along with postdoctoral fellows David Glenn and Dominik Bucher, developed a system that uses nitrogen-vacancy centers (atomic-scale impurities in diamonds) to read the nuclear magnetic resonance (NMR) signals produced by samples as small as a single cell. And they did it on a shoestring budget using an old, donated electromagnet.

Continue reading "Researchers use diamond impurities to see on the microscopic scale" by Peter Ruell, April 19, 2018.

*Also read: D.R. Glenn, D.B. Bucher, J. Lee, M.D. Lukin, H. Park & R.L. Walsworth, "High-resolution magnetic resonance spectroscopy using a solid-state spin sensor," Nature 555 (15 March 2018) DOI: 10.1038/nature25781.