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Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond
| Content Provider | Semantic Scholar |
|---|---|
| Author | DeVience, Stephen J. |
| Copyright Year | 2014 |
| Abstract | Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) are techniques widely utilized by many scientific fields, but their applications are often limited by short spin relaxation times and low sensitivity. This thesis explores two novel forms of NMR addressing these issues: nuclear spin singlet states for extending spin polarization lifetime and nitrogen-vacancy centers for sensing small samples. Part I presents studies of nuclear spin singlet states in organic molecules, beginning with a theoretical description of the singlet and related dressed quantum states before proceeding to the development of new techniques for singlet state spectroscopy. The long lifetimes and unique properties of singlet states makes them of interest for the storage of spin polarization, the study of slow dynamic processes, and the determination of molecular structure. Requirements for the creation of spin-locked singlet states are investigated and a model is derived for singlet state lifetime as a function of spin-locking power. A pulse sequence for targeting chemical species in complex mixtures, called “Suppression of Unwanted Chemicals using Contrast-Enhancing Singlet States” (SUCCESS), is then demonstrated for a number of biomolecules. Applications of singlet states in nearly-equivalent spins are explored, including the creation, manipulation, and readout of singlet states using a new technique called Spin-Lock |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://martinos.org/lfi/pdf/DeVience%20thesis%20May%202014.pdf |
| Alternate Webpage(s) | https://dash.harvard.edu/bitstream/handle/1/12274612/DeVience_gsas.harvard_0084L_11628.pdf?sequence=4 |
| Alternate Webpage(s) | http://walsworth.physics.harvard.edu/publications/2014_DeVience_HUPhDThesis.pdf |
| Alternate Webpage(s) | https://dash.harvard.edu/bitstream/handle/1/12274612/DeVience_gsas.harvard_0084L_11628.pdf?sequence=1 |
| Alternate Webpage(s) | https://dash.harvard.edu/bitstream/handle/1/12274612/DeVience_gsas.harvard_0084L_11628.pdf?isAllowed=y&sequence=4 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
