Dynamic nuclear polarization and spin-diffusion in non-conducting solids

TL;DR

This paper reviews the mechanisms of dynamic nuclear polarization and spin diffusion in non-conducting solids, emphasizing recent advances and the importance of the spin diffusion barrier in enhancing NMR techniques.

Contribution

It provides a comprehensive review of spin diffusion processes and recent experimental results in DNP for non-conducting solids, highlighting the role of the spin diffusion barrier.

Findings

Spin diffusion is crucial for effective DNP in solids.

Recent results show improved polarization techniques.

The spin diffusion barrier significantly influences polarization efficiency.

Abstract

There has been much renewed interest in dynamic nuclear polarization (DNP), particularly in the context of solid state biomolecular NMR and more recently dissolution DNP techniques for liquids. This paper reviews the role of spin diffusion in polarizing nuclear spins and discusses the role of the spin diffusion barrier, before going on to discuss some recent results.