Colloquium: Magnetic Microscopy and NMR with Nitrogen-Vacancy Defect Centers in Diamond

Date: September 23, 2016
Time: 3:00 pm – 4:15 pm

Location: Exploratory Hall L111 (Google map)

Featured Speaker:
Pauli Kehayias
Harvard

Abstract:
Nitrogen-vacancy (NV) defect centers in diamond have generated much recent interest for magnetometry applications. NV centers work in ambient conditions and can be placed a few nanometers from the diamond surface, allowing a small sample-sensor separation and high spatial resolution. I will review two applications for NV magnetic sensing. First, I will discuss ongoing work on using ensembles of NV centers for magnetic microscopy, where we image magnetic grains in rock samples for paleomagnetism studies. Next I will talk about using NV centers to measure the NMR signal from statistically-polarized magnetic nuclei in a ~10 picoliter sensing volume. To conclude I will summarize the ongoing challenges in these experiments and the planned future directions.

Refreshments will be served.