title: Force detection of nuclear magnetic resonance.
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 x 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.
authors.forename: D
authors.initials: D
authors.lastname: Rugar
authors.forename: O
authors.initials: O
authors.lastname: Züger
authors.forename: S
authors.initials: S
authors.lastname: Hoen
authors.forename: C S
authors.initials: CS
authors.lastname: Yannoni
authors.forename: H M
authors.initials: HM
authors.lastname: Vieth
authors.forename: R D
authors.initials: RD
authors.lastname: Kendrick