Nanoscale Fourier-transform MRI

We report a method for nanometer-scale pulsed nuclear magnetic resonance imaging and spectroscopy. Periodic radiofrequency pulses are used to create temporal correlations in the statistical polarization of a solid organic sample. The spin density is spatially encoded by applying a series of intense...

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Bibliographic Details
Published in:arXiv.org 2013-05
Main Authors: Nichol, John M, Naibert, Tyler R, Hemesath, Eric R, Lauhon, Lincoln J, Budakian, Raffi
Format: Article
Language:English
Subjects:
Coding
Fourier transforms
Magnetic resonance imaging
Mechanical oscillators
Nanowires
NMR
Nuclear magnetic resonance
Polystyrene resins
Proton density (concentration)
Radio frequency
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Summary:We report a method for nanometer-scale pulsed nuclear magnetic resonance imaging and spectroscopy. Periodic radiofrequency pulses are used to create temporal correlations in the statistical polarization of a solid organic sample. The spin density is spatially encoded by applying a series of intense magnetic field gradient pulses generated by focusing electric current through a nanometer-scale metal constriction. We demonstrate this technique using a silicon nanowire mechanical oscillator as a magnetic resonance sensor to image 1H spins in a polystyrene sample. We obtain a two-dimensional projection of the sample proton density with approximately 10-nm resolution.
ISSN:2331-8422