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Updated: Jun 4, 2025

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
Published on: June 9, 2016
Power spectral density imaging for polymeric films using ex-situ solid-state magnetic resonance with needlelike
Natsuki Kawabata1, Naoki Asakawa1, Teruo Kanki2
1Division of Molecular Science, Graduate School of Science and Technology, , 1-5-1 Tenjincho, Kiryu, Gunma 3768515, Japan.
Abstract:
An ex-situ solid-state nuclear magnetic resonance (NMR) method employing localized magnetic field gradients generated by a needlelike ferromagnet is described. The depth profiling of a multilayer polymeric film using the proposed method and spin density imaging is successfully acquired. The imaging of the variable-frequency spinlattice relaxation rate in the depth direction reveals differences in the spectral density function for molecular dynamics between the surface and interior of the film. This may be due to the differences in the correlation time distribution of the molecular dynamics between the surfaces and interior of the film.
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