Nanometer Scale Magnetic Resonance Imaging of Electron and Nuclear Spins
Abstract
The goal of the proposed research program is to achieve nanometer scale imaging of electron and nuclear spins using silicon nanowire based force-detected magnetic resonance spectroscopy. In particular, we seek to extend the spectroscopic capabilities of magnetic resonance spectroscopy to the nanometer scale to study the structure and function of complex biomolecules, including proteins and virus particles with high spatial resolution, in a chemically selective manner. To achieve these goals, we need to develop new techniques capable of implementing high fidelity spin control in nanometer scale spin ensembles. In addition, we need to increase the spin detection sensitivity to be able to image spin distributions with characteristic volumes of (50-nm)^3 in three dimensions with sub nanometer resolution. In this proposal, we are following two parallel routes. First, we are are designing pulse sequences using optimal control theory to implement high fidelity spin control. These pulses will then be incorporated into dynamical decoupling sequences that increase spin coherence times for high resolution imaging and spectroscopy of solid-sate nuclear spins. Second, we are increasing the detection sensitivity by establishing efficient dynamic nuclear polarization protocols for producing large nuclear spin polarization for nanometer scale imaging and spectroscopy, fabricating high quality silicon nanowire arrays to optimize detection sensitivity and increase measurement efficiency, and the fabrication of current focusing field gradient sources using epitaxial metal films that maximize the magnetic field gradient for imaging.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 26, 2021
- Accession Number
- AD1200666
Entities
People
- Raffi Budakian
Organizations
- University of Waterloo