OSE Seminars
Nanoscale electron spin resonance spectroscopy using NV centers in diamond
Presented by Dr. Susumu Takahashi, Departments of Chemistry and Physics & Astronomy, University of Southern California
Magnetic resonance (MR), such as nuclear magnetic resonance (NMR) and electron spin resonance (ESR), can probe the local structure and dynamic properties of various systems, making them among the most powerful and versatile analytical methods. However, their intrinsically low sensitivity precludes MR analyses of samples with very small volumes; e.g., more than 1010 electron spins are typically required to observe ESR signals at room temperature. A vast improvement in the current limits of MR will enable the imaging of structures and conformational changes of molecules in solution at the single molecule level.
A nitrogen-vacancy (NV) center in diamond is a promising candidate for applications in room temperature magnetic sensing with single spin sensitivity. In this presentation, we will discuss ESR spectroscopy using on NV centers in diamond. By employing ESR and double electron-electron resonance (DEER) techniques, we investigate impurities and coherence in diamond. We also demonstrate ESR of several electron spins using NV-based ESR spectroscopy. Moreover, we will discuss development of a high-frequency NV-based ESR system. This work is supported by NSF and the Searle Scholar program.
4:00 pm, Monday, May 1, 2017
Room 102, Science and Math Learning Center
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A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php