Scanning localized magnetic fields in microfluidic device using single spin in nanodiamond
Jacob M. Taylor, K. Lim, Chad Ropp, Benjamin Shapiro, Edo Waks
We demonstrate localized magnetometry using a single nitrogen vacancy (NV) center in a microfluidic device. Our approach can manipulate magnetic objects in three dimensions within a liquid environment and also orients their magnetic dipole. A diamond nanocrystal is integrated into the microfluidic device and serves as a local magnetic field probe. We vary the position of a magnetic object in liquid relative to the NV and map out its magnetic field distribution by performing electron spin resonance (ESR) measurements. These results open up the possibility for using NV centers as nanosized magnetometers with high sensitivity in a microfluidic device for chemical and biological sensing applications.
Proceedings of the National Academy of Sciences of the United States of America
, Lim, K.
, Ropp, C.
, Shapiro, B.
and Waks, E.
Scanning localized magnetic fields in microfluidic device using single spin in nanodiamond, Proceedings of the National Academy of Sciences of the United States of America, [online], https://doi.org/10.1021/nl503280u
(Accessed December 2, 2023)