Radical-free dynamic nuclear polarization using electronic defects in silicon

  title={Radical-free dynamic nuclear polarization using electronic defects in silicon},
  author={Maja C Cassidy and Chandrasekhar Ramanathan and David G. Cory and Joel W. Ager and Charles M. Marcus},
  journal={Physical Review B},
Direct dynamic nuclear polarization of 1H nuclei in frozen water and water-ethanol mixtures is demonstrated using silicon nanoparticles as the polarizing agent. Electron spins at dangling-bond sites near the silicon surface are identified as the source of the nuclear hyperpolarization. This novel polarization method open new avenues for the fabrication of surface engineered nanostructures to create high nuclear-spin polarized solutions without introducing contaminating radicals, and for the… 

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