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Nuclear Magnetic Resonance with Spin...

DeVience, Stephen J.

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Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond./
作者:	DeVience, Stephen J.
面頁冊數:	217 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-10(E), Section: B.
Contained By:	Dissertation Abstracts International75-10B(E).
標題:	Chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3626549
ISBN:	9781321015492

Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond.
DeVience, Stephen J.

Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond. - 217 p.

Source: Dissertation Abstracts International, Volume: 75-10(E), Section: B.

Thesis (Ph.D.)--Harvard University, 2014.

This item is not available from ProQuest Dissertations & Theses.

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.

ISBN: 9781321015492Subjects--Topical Terms:

516420
Chemistry.

Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond.
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245 1 0 $a Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond.
300 $a 217 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-10(E), Section: B.
500 $a Adviser: Ronald L. Walsworth.
502 $a Thesis (Ph.D.)--Harvard University, 2014.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a 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.
520 $a 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 Induced Crossing (SLIC), and the transfer of polarization between singlet states. Finally, J-coupling spectroscopy using the SLIC pulse sequence is demonstrated at very low magnetic fields.
520 $a Part II presents the detection of NMR spectra from small numbers of nuclei in a nanoscale volume on a diamond surface using shallow nitrogen-vacancy (NV) centers as sensors. A theoretical description is developed for the NMR signal and the technique is demonstrated for proton, fluorine, and phosphorus NMR in a variety of samples. The method is then extended to micron-scale imaging of nuclear spin concentrations over a wide field of view, the determination of nitrogen-vacancy center depth, and the measurement of thin film thickness.
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792 $a 2014
793 $a English
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