Abstract
Micromechanical sensing of magnetic force was used to detect nuclear magnetic resonance with exceptional sensitivity and spatial resolution. With a 900 angstrom thick silicon nitride cantilever capable of detecting subfemtonewton forces, a single shot sensitivity of 1.6 × 10 13 protons was achieved for an ammonium nitrate sample mounted on the cantilever. A nearby millimeter-size iron particle produced a 600 tesla per meter magnetic field gradient, resulting in a spatial resolution of 2.6 micrometers in one dimension. These results suggest that magnetic force sensing is a viable approach for enhancing the sensitivity and spatial resolution of nuclear magnetic resonance microimaging.
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Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 5, 2006, 8:01 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 12, 2024, 6:45 p.m.) |
Indexed | 1 month, 2 weeks ago (July 4, 2025, 8:46 a.m.) |
Issued | 31 years, 2 months ago (June 10, 1994) |
Published | 31 years, 2 months ago (June 10, 1994) |
Published Print | 31 years, 2 months ago (June 10, 1994) |
@article{Rugar_1994, title={Force Detection of Nuclear Magnetic Resonance}, volume={264}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.264.5165.1560}, DOI={10.1126/science.264.5165.1560}, number={5165}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Rugar, D. and Züger, O. and Hoen, S. and Yannoni, C. S. and Vieth, H.-M. and Kendrick, R. D.}, year={1994}, month=jun, pages={1560–1563} }