Abstract
The authors report the use of a radio frequency (rf) silicon nanowire mechanical oscillator as a low-temperature nuclear magnetic resonance force sensor to detect the statistical polarization of H spins in polystyrene. To couple the H spins to the nanowire oscillator, a magnetic resonance force detection protocol was developed that utilizes a nanoscale current–carrying wire to produce large time-dependent magnetic field gradients as well as the rf magnetic field. Under operating conditions, the nanowire experienced negligible surface-induced dissipation and exhibited an ultralow force noise near the thermal limit of the oscillator.
1 More- Received 1 November 2011
DOI:https://doi.org/10.1103/PhysRevB.85.054414
©2012 American Physical Society
Viewpoint
Silicon Nanowires Feel the Force of Magnetic Resonance
Published 13 February 2012
Silicon nanowire sensors offer a route to improving the sensitivity and spatial resolution of magnetic resonance force microscopy.
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