Microscale 3D imaging by magnetic resonance force microscopy using full-volume Fourier- and Hadamard-encoding.

Schnoz S; Hunkeler A; Däpp A; Kamberger R; Korvink JG; Meier BH

doi:10.1016/j.jmr.2019.01.005

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Microscale 3D imaging by magnetic resonance force microscopy using full-volume Fourier- and Hadamard-encoding.

Schnoz S Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland.
Hunkeler A Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland.
Däpp A Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland.
Kamberger R BrainLinks-BrainTools Cluster of Excellence, University of Freiburg, Georges-Koehler-Allee 80, 79110 Freiburg, Germany.
Korvink JG Institute of Microstructure Technology, KIT, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
Meier BH Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland. Electronic address: beme@ethz.ch.

2019-01-25

Published in:

Journal of magnetic resonance (San Diego, Calif. : 1997). - 2019

Magnetic-resonance force detection

English Three-dimensional spatially resolved full-volume imaging by magnetic resonance force microscopy at room temperature is described. Spatial resolution in z-dimension is achieved by using the magnetic-field gradient of a ferromagnetic particle that is also used for the force detection of the magnetic resonance. The gradient of the radiofrequency pulses generated by two separate wire-bonded microcoils is used for spatial resolution in x- and y-dimension. To enhance the sensitivity of our measurement Hadamard- and Fourier-encoding schemes are applied due to their multiplex effect. Measurements were taken on a patterned (NH4)2SO4 crystal sample. From the calculated magnetic field distributions, a 3D image was reconstructed with a voxel volume of about 5 μm3 (1.2 μm × 3.0 μm × 1.4 μm in x-, y- and z-dimension).

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