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Updated: Feb 1, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Detection of liquids by magnetic resonance force microscopy in the gradient-on-cantilever geometry
Sebastian Schnoz1, Alexander Däpp1, Andreas Hunkeler1
1Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zurich, Switzerland.
Abstract:
We demonstrate the detection of picoliter amounts of water and triethylenetetramine by a magnetic-resonance-force-microscopy (MRFM) setup operated in the gradient-on-cantilever geometry at room temperature. A magnetic field gradient is produced by a ferromagnetic SmCo particle glued to the tip of a micromechanical resonator (cantilever). The liquids are enclosed in a micro-capillary to protect them from the high vacuum environment needed for sensitive detection. We describe simple spectroscopic experiments as proton T1 - relaxation, Rabi nutation curves and Hahn-echo measurements.
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